Transport of Hazardous Materials
Interlink編集部What Is Hazardous Materials Transportation?
Hazardous materials transportation refers to the practical procedures involved in shipping cargo that may pose risks such as fire, explosion, toxicity, corrosiveness, heat generation, or environmental pollution. This is done according to prescribed classification, packaging, labeling, documentation, and loading conditions.
In international transport, confirmation is required at each stage, including maritime transport, air transport, land transport, storage in warehouses, customs clearance procedures, CFS in-gate, compatibility for consolidation, and inland delivery.
For freight forwarder operations, hazardous materials transportation is not simply about whether the cargo can be transported. It also requires verifying the UN number, proper shipping name, hazard class, packaging group, Safety Data Sheet (SDS), hazardous material declaration, labels, marks, carrier acceptance by shipping lines and airlines, warehousing acceptance, CFS in-gate eligibility, and whether consolidation is permitted. Failure to confirm these after booking may result in shipment, air carriage, or in-gate being halted.
The key to hazardous materials transportation is early identification of hazardous cargo and preparing it appropriately for safe transport according to the mode of transport, storage facilities, and acceptance conditions of all involved parties.
Scope Covered in This Article
| Item | Contents Covered in This Article | Contents Covered in Other Articles |
|---|---|---|
| Overview of Hazardous Materials Transport | Organizes the overall framework of categories, documents, markings, acceptance criteria, storage, and consolidation checks for hazardous materials transport. | Detailed classification judgments for individual hazardous materials are covered in specific articles for each hazardous goods item. |
| SDS and GHS Markings | Addresses how to use SDS and GHS markings as initial reference materials for hazardous materials verification. | Detailed reading of SDS and GHS markings is covered in the SDS and GHS Markings articles. |
| UN Numbers and Proper Shipping Names | Discusses the concept of checking UN numbers, proper shipping names, hazard classes, and packaging groups as a combined verification. | Details on UN numbers and proper shipping names are covered in the UN Numbers article. |
| Maritime and Air Transport | Covers the basic framework of referencing the IMDG Code for maritime transport and the IATA Dangerous Goods Regulations for air transport. | Details for maritime and air transport are covered in the IMDG Code and IATA Dangerous Goods Regulations articles respectively. |
| Dangerous Goods Declaration and Labeling | Addresses the relationship of dangerous goods declarations, labels, marks, and outer packaging markings to acceptance criteria. | Examples of dangerous goods declaration forms and document details are covered in the Dangerous Goods Declaration article. |
| CFS, Warehouses, and Consolidation | Explains that even if shipping lines accept cargo, CFS operators, hazardous materials warehouses, or consolidation agents may refuse acceptance. | Details on CFS hazardous goods in-gate, hazardous materials warehouses, and hazardous materials consolidation compatibility are covered in their respective individual articles. |
| Frequently Encountered Cargo | Addresses initial verification for lithium batteries, aerosol products, paints, cleaning agents, fragrances, samples, and similar goods. | Details on transportation of lithium batteries, aerosol products, etc. are covered in individual articles. |
| Undeclared or Incorrect Declaration Response | Covers initial response procedures when undeclared or incorrect hazardous materials declarations are suspected. | Post-incident liability, insurance, and cost responsibility are covered in the Cargo Incidents and Cost Responsibility articles. |
Overview of Dangerous Goods Transportation
Dangerous goods include explosives, compressed gases, flammable liquids, combustible materials, oxidizing substances, poisons, radioactive materials, corrosive substances, and other hazardous materials.
If transported in the same manner as regular cargo, these goods may cause accidents, fires, explosions, harm to people, damage to ships, aircraft, warehouses, and environmental pollution.
Therefore, in transporting dangerous goods, it is essential to confirm the nature of the cargo and, in accordance with applicable transport regulations, properly classify, package, label, document, load, segregate, and store the goods.
For maritime transport, the IMDG Code is the primary practical guideline, while for air transport, the IATA Dangerous Goods Regulations apply. However, actual transport acceptance depends not only on these regulations but also on the acceptance policies of shipping lines, airlines, CFS operators, warehouses, trucking companies, and receiving parties at the destination.
Initial Checks for Hazardous Materials Transport
When a freight forwarder hears from the shipper that the cargo is "a chemical," "a liquid," "contains batteries," "a spray," or "a sample," it should not be handled casually as regular cargo.
| Check Item | Details to Confirm | Risks if Not Confirmed | Reference Materials / Contacts |
|---|---|---|---|
| Hazardous Materials Applicability | Confirm whether the cargo qualifies as a hazardous material for transport purposes. | Proceeding as regular cargo may lead to refusal of acceptance after in-gate. | Shipper, manufacturer, SDS, hazardous materials classification documents |
| SDS | Verify the latest version and confirm the presence of transport information in Section 14. | Unable to determine hazardous status, UN number, and transport conditions. | SDS, manufacturer confirmation documents, product specification sheets |
| UN Number | Check whether there is a four-digit UN number identifying the hazardous material. | Shipping lines, airlines, and CFS operators cannot determine acceptance. | SDS, dangerous goods declaration, hazardous materials certification |
| Proper Shipping Name | Confirm the official shipping name used for hazardous materials transportation. | Relying only on invoice item names may lead to incorrect handling arrangements. | SDS Section 14, dangerous goods declaration, manufacturer documents |
| Hazard Class | Confirm primary and subsidiary hazards for the cargo. | Cannot determine labeling, segregation, or mixed-loading compatibility. | SDS, dangerous goods declaration, transport regulations |
| Packaging Group | For applicable cargo, verify the packaging group classification. | Packaging standards and quantity restrictions cannot be confirmed. | SDS, dangerous goods declaration, packaging documentation |
| Transport Mode | Confirm whether the shipment is by sea, air, or inland delivery. | Transportation acceptable by sea may be rejected by air. | Shipping lines, airlines, courier companies, delivery companies |
| Storage and In-Gate Conditions | Verify whether the cargo can be accepted at warehouses, CFS, airport freight terminals, or CY. | Storage or in-gate restrictions before or after transport may cause delays. | CFS operators, hazardous materials warehouses, airport freight terminals, delivery companies |
Reference Map for Dangerous Goods Transport Categories
In dangerous goods transport, the sources and evaluation criteria vary depending on the verification item. Generally, organizing them as follows helps prevent confusion in practice.
| Verification Topic | Main Points to Verify | Role in Practice | Related Specific Topics |
|---|---|---|---|
| SDS | Confirm hazards, ingredients, handling, storage, and transport information. | Entry-level document for dangerous goods confirmation. | SDS, Non-hazardous Goods Certificate |
| GHS Labeling | Check pictograms, signal words, and hazard information. | Indicator to begin chemical hazard verification. | GHS labeling, SDS |
| UN Number | Confirm the 4-digit number identifying dangerous goods. | Entry point to verify proper shipping name, class, and packaging conditions. | UN number, Dangerous Goods Class |
| Dangerous Goods Class | Check primary hazards like explosives, gases, flammability, corrosivity, and toxicity. | Key criterion for labels, stowage, segregation, and acceptance decision. | Dangerous Goods Class, Permissibility of Mixed Loading |
| Packing Group | Verify classifications related to hazard degree and packaging requirements. | Basis for packaging standards, quantity limits, and declaration review. | Packing group, Dangerous Goods Declaration |
| IMDG Code | Confirm classification, packaging, marking, stowage, and segregation for maritime transport. | Core regulation for sea transport. | IMDG Code, CFS Dangerous Goods In-Gate |
| IATA Dangerous Goods Regulations | Verify classification, packaging, quantity limits, documentation, and loading conditions for air transport. | Core regulation for air transport. | IATA Dangerous Goods Regulations, Air Dangerous Goods |
| Dangerous Goods Declaration | Check UN number, proper shipping name, class, quantity, packaging, and emergency contacts. | Main document to declare dangerous goods information to the carrier. | Dangerous Goods Declaration, SDS |
| Hazardous Materials Warehouse | Confirm acceptability for dangerous goods storage in transport and under fire safety laws. | Verification axis for temporary storage and warehouse intake before and after transport. | Hazardous Materials Warehouse, Fire Services Act Dangerous Goods |
| CFS Dangerous Goods In-Gate | Confirm whether the CFS accepts dangerous goods, intake date, labeling, and compatibility for consolidation. | Important in LCL consolidation and export CFS in-gate. | CFS Dangerous Goods In-Gate, Permissibility of Mixed Loading |
| Permissibility of Mixed Loading for Dangerous Goods | Check if dangerous goods can be consolidated with each other or with general cargo within one transport unit. | Important verification for LCL consolidation, warehouse storage, and container stuffing. | Permissibility of Mixed Loading, CFS Dangerous Goods In-Gate |
| Lithium Battery Transport | Verify UN3480, UN3481, UN3090, UN3091, UN38.3 certification, and battery configuration. | Common specific topic in electronics and battery cargo. | Lithium Battery Transport, IATA Dangerous Goods Regulations |
| Aerosol Product Transport | Check UN1950, propellants, flammability, capacity, limited quantity status, and acceptance conditions. | Frequent specific topic for spray cans, cosmetics, and daily use items. | Aerosol Product Transport, UN Number |
Differences by Mode of Transport
In hazardous materials transportation, the regulations to be checked and the parties involved vary for maritime transport, air transport, domestic delivery, and warehouse storage.
| Category | Key Regulations & Standards to Confirm | Parties to Verify With | Practical Notes |
|---|---|---|---|
| Maritime Transport | Check the IMDG Code, shipping line conditions, and CFS requirements. | Shipping lines, NVOCCs, CFS operators, CY operators, hazardous materials warehouses. | Pay attention to loading, segregation, marine pollutants, permissibility of LCL consolidation, and restrictions at transshipment ports. |
| Air Transport | Confirm the IATA Dangerous Goods Regulations, airline conditions, and airport warehouse requirements. | Airlines, consolidators, courier companies, airport warehouses. | Watch for packaging standards, quantity limits, passenger aircraft acceptance, cargo aircraft exclusivity, and airline-specific restrictions. |
| Domestic Delivery | Check the Fire Services Act, High Pressure Gas Safety Act, road transport conditions, and delivery company requirements. | Delivery companies, warehouses, consignee locations, shippers. | There may be cases where domestic delivery is not accepted, vehicle conditions do not comply, or consignees refuse receipt. |
| Warehouse Storage | Confirm the Fire Services Act, warehouse permits, equipment, and storage classifications. | Hazardous materials warehouses, dangerous goods warehouses, general warehouses, local fire authorities. | Even if accepted for transport, cargo may not be accepted for domestic storage under fire safety regulations. |
| CFS In-Gate | Check CFS acceptance criteria, hazardous materials admission rules, and consolidator conditions. | CFS operators, consolidators, NVOCCs, shipping lines. | Even if the shipping line accepts the cargo, the CFS may refuse acceptance. |
For the same hazardous material, transport feasibility may vary by mode—for example, permitted by sea but not accepted by air, or requiring fire safety confirmation for warehouse storage.
Frequently Encountered Hazardous Goods and Initial Checks
In freight forwarder operations, not all hazardous goods are handled with the same frequency. Particularly, chemicals, flammable liquids, aerosol products, lithium batteries, corrosive substances, and small sample quantities require frequent verification.
| Examples of Cargo | Reasons for Easy Oversight | Initial Checks | Related Verification Topics |
|---|---|---|---|
| Paints, Adhesives, Inks | They appear as common industrial products but may qualify as flammable liquids. | Verify SDS, UN number, flash point, hazard class, and container classification. | SDS, UN number, hazard class, hazardous materials under Fire Services Act |
| Cleaning Agents, Solvents, Chemicals | Product names alone do not clarify flammability, corrosiveness, or toxicity. | Check SDS, GHS markings, ingredients, pH, flash point, and transport data section. | SDS, GHS markings, hazardous materials warehouse |
| Aerosol Products | They look like cosmetics or daily necessities but involve pressurized containers and propellants. | Confirm UN1950, propellant type, flammability, quantity, and acceptance conditions for air and sea transport. | Transport of aerosol products, IATA Dangerous Goods Regulations |
| Products Containing Lithium Batteries | Listed as electronic devices or parts, making battery presence less obvious. | Check UN number, battery type, packed with equipment or built-in, UN38.3 certification, and airline acceptance conditions. | Transportation of lithium batteries, IATA Dangerous Goods Regulations |
| Fragrances, Cosmetic Ingredients | Often requested as small samples but may have flammable or environmentally hazardous properties. | Verify SDS, flash point, volume, eligibility as small quantity hazardous goods, and air transport acceptance. | SDS, small quantity hazardous goods, air dangerous goods |
| Corrosive Substances | Chemical names alone do not clarify corrosiveness or storage requirements. | Check SDS, pH, UN number, hazard class, and response measures for leaks. | Hazardous materials warehouse, compatibility of hazardous goods |
| Sample Goods, Promotional Items | There is often a mistaken assumption that small quantities are safe. | Confirm contents, ingredients, presence of batteries or sprays, SDS, and quantity. | Small quantity hazardous goods, aerosol products, transportation of lithium batteries |
Hazard Classes and Practical Implications
Hazard classes categorize the primary dangers of hazardous materials. However, transport eligibility, consolidation permissions, and storage approvals are not determined by class alone.
| Main Category | Representative Cargo | Practical Verification Points | Associated Risks |
|---|---|---|---|
| Explosive Cargo | Such as explosives and pyrotechnic products. | Acceptance by typical freight forwarders is limited; specialized verification is required. | Explosion, fire, acceptance restrictions, storage restrictions |
| Compressed Gases and Aerosols | Gas cylinders, spray cans, aerosol products. | Check container type, pressure, flammability, air transport eligibility, and warehouse storage requirements. | Rupture, leakage, fire, air transport refusal |
| Flammable Liquids | Paints, solvents, adhesives, inks, fragrances. | Verify flash point, container type, quantity, air and sea transport conditions, and fire safety storage rules. | Fire, odors, leakage, storage restrictions |
| Oxidizing Substances | Oxidizers, organic peroxides, etc. | Confirm segregation from other cargo, temperature control, and acceptance policies of shipping lines and CFS operators. | Fire intensification, chemical reactions, prohibition of mixed loading |
| Toxic and Infectious Substances | Poisons, reagents, medical and inspection-related cargo. | Check packaging, labeling, emergency response measures, and acceptance by warehouses and delivery companies. | Harm to human health, contamination, acceptance restrictions |
| Corrosive Substances | Acids, alkalis, corrosive chemicals. | Assess effects in case of leakage, compatibility with other cargo, container type, and warehouse storage conditions. | Corrosion, container damage, chemical reaction, claims |
| Other Harmful Substances | Lithium batteries, environmentally hazardous substances, etc. | Confirm rules for each item, UN numbers, acceptance conditions, and storage requirements. | Spontaneous ignition, environmental pollution, specific regulations |
This table is organized to reflect cargo types frequently encountered in freight forwarder operations and serves as a practical entry point. For the official Class 1 through 9 classification system, please refer to the Hazard Class article.
Hazard classes provide important preliminary information, but in practice, verification should be based on UN numbers, official shipping names, subsidiary hazards, container classification, transport mode, and acceptance policies.
Organization by Verification Dimension
In hazardous materials transport, a single verification is never sufficient. It is crucial to separately verify classification, documentation, marking, acceptance, storage, and segregation.
| Verification Dimension | Items to Verify | Practical Significance | Risks of Insufficient Verification |
|---|---|---|---|
| Dangerous Goods Classification | Check SDS, GHS markings, product specifications, manufacturer confirmation, and classification documents. | Determines whether the cargo is hazardous or non-hazardous. | Risk of arranging transport as regular cargo by mistake. |
| Transport Classification | Verify UN number, official shipping name, hazard class, packaging group, subsidiary hazards. | Confirms handling requirements under transport regulations. | Shipping lines or airlines may refuse acceptance due to unclear classification. |
| Documentation | Review dangerous goods declarations, SDS, non-hazardous certificates, and hazardous cargo details. | Ensures proper information is provided to shipping lines, airlines, CFS, and warehouses. | Inconsistencies can lead to refusal of acceptance. |
| Markings and Labels | Check hazardous materials labels, UN number markings, GHS labels, marine pollutant marks, and lithium battery markings. | Prevents in-gate refusal, acceptance denial, and mishandling during incidents. | Load may be stopped at gate or before loading. |
| Acceptance Eligibility | Confirm conditions of shipping lines, airlines, CFS, warehouses, courier companies, and delivery services. | Verifies actual transport feasibility even if permitted by regulations. | Booking may be canceled after confirmation of ineligibility. |
| Storage | Verify hazardous materials warehouses, classification under Fire Services Act, temperature control, ventilation, and storage quantities. | Determines where cargo can be stored before and after transport. | May result in refusal of warehouse in-gate or storage accidents. |
| Segregation and Compatibility | Check compatibility with other hazardous goods or general cargo, segregation requirements, and CFS consolidation eligibility. | Prevents accidents and claims during LCL consolidation or warehouse storage. | May cause segregation issues, re-shipment, or separate transport arrangements. |
| Incident Response | Confirm contacts and response procedures for leakage, fire, damage, and undisclosed hazardous cargo discovery. | Prevents escalation of incidents and liability problems. | Delays in communication and response may worsen damages. |
Precautions for Maritime Transport
In maritime transport, confirmation is required for classification, packaging, marking, stowage, segregation, and documentation of dangerous goods according to the IMDG Code.
Even when loading into containers, issues may arise depending on the cargo’s hazards, such as prohibited combinations, required segregation, temperature control conditions, CFS in-gate restrictions, and markings for marine pollutants.
Especially in LCL consolidation, compatibility with other cargo is critical. Dangerous combinations within the same container or warehouse include oxidizing substances and flammables, poisons and food products, corrosive materials and metal items, among others.
Even if the shipping line accepts the cargo as dangerous goods, the CFS, consolidator, hazardous materials warehouse, transshipment port, or destination CFS may refuse acceptance.
Key Points for Air Transport
In air transport, the classification, packaging standards, labels, marks, dangerous goods declarations, and airline acceptance conditions must be confirmed according to the IATA Dangerous Goods Regulations.
Because aircraft have less margin for safety during transport, acceptance conditions may be stricter than those for maritime transport.
Lithium batteries, aerosol cans, paints, adhesives, fragrances, alcohol-containing products, reagents, and pharmaceutical-related cargo may appear as ordinary cargo but could fall under air dangerous goods regulations.
While transport may be permitted under the regulations, airlines or courier companies may independently refuse acceptance. Freight forwarders should not judge by product name alone but verify SDS and manufacturer information and confirm acceptance in advance with the airline.
Relationship with SDS
An SDS (Safety Data Sheet) is a document that organizes information on the properties of chemicals, their hazards, handling, storage, and transport details.
For hazardous materials transportation, the transport-related sections of the SDS should be checked, including the UN number, proper shipping name, hazard class, packaging group, and marine pollutant status.
However, having an SDS does not automatically mean the cargo is eligible for transport. Situations may include outdated SDS versions, blank transport information fields, data only relevant for domestic regulations, or missing information required for maritime or air transport.
It is important, where necessary, to request from the shipper or manufacturer the latest version of the SDS, hazardous materials classification documents, non-dangerous goods certificates, and product specifications.
Relation to Dangerous Goods Declaration
When transporting hazardous materials, the shipper or related parties must prepare a Dangerous Goods Declaration and provide the hazardous cargo information to the carrier.
The Dangerous Goods Declaration includes details such as the UN number, proper shipping name, hazard class, packing group, quantity, packaging, and emergency contact information.
Freight forwarders should verify that the information on the declaration matches the SDS, invoice, packing list, and actual cargo labels.
If discrepancies are found, shipping lines, airlines, CFS operators, or warehouses may refuse acceptance of the shipment.
When Undeclared or Misdeclared Dangerous Goods Are Discovered
Failure to declare or misdeclaration of dangerous goods poses serious risks, including ship fires, aircraft accidents, warehouse incidents, rejection at CFS intake, regulatory responses, and claims for damages.
If there is a possibility of undeclared or misdeclared dangerous goods, the cargo should not continue to be treated as regular freight. Immediate notification to all relevant parties is required, along with safety verification and corrective actions.
| Step | What to Confirm | Approach for Response | Parties to Confirm With |
|---|---|---|---|
| 1. Stop all operations | Confirm whether the cargo is before in-gate, inside the warehouse, inside the CFS, prior to loading, or after air terminal intake. | Do not continue processing as regular cargo. | Warehouse, CFS, customs broker, internal staff |
| 2. Notify relevant parties | Contact the shipper, shipping line, airline, CFS, warehouse, customs broker, and delivery company. | Prioritize safety verification. | Shipper, carrier, CFS, warehouse, delivery company |
| 3. Obtain accurate documentation | Confirm SDS, dangerous goods declaration, UN number, hazard class, quantity, packaging, and photos of the actual cargo. | Verify accurate dangerous goods information. | Shipper, manufacturer, dangerous goods declarant |
| 4. Reconfirm acceptance status | Check the assessment from the shipping line, airline, CFS, warehouse, and hazardous materials specialists. | Decide whether to continue intake, re-export, arrange alternative handling, or cancel transport. | Shipping line, airline, CFS, warehouse, hazardous materials specialists |
| 5. Clarify costs and responsibilities | Check for costs related to repacking, relabeling, storage, return shipment, alternative transport, cancellations, and additional work. | Determine which party's information omission or misdeclaration caused the costs. | Shipper, internal staff, carrier, warehouse, insurance personnel |
Comparison Table of Freight Forwarder Involvement
| Stage | What Can Be Supported | What Should Not Be Assumed | Practical Response |
|---|---|---|---|
| When Receiving the Commodity Name at the Quotation Stage | Confirm whether the commodity name could indicate hazardous materials and request SDS or product information. | Do not determine that the cargo is non-hazardous based on the commodity name alone. | Conduct additional verification for chemicals, liquids, batteries, sprays, and samples. |
| When Receiving SDS | Check the transport information section, UN number, official shipping name, class, and packaging group. | Do not assume transportability just because an SDS is available. | Cross-check with dangerous goods declarations, carrier requirements, and CFS/warehouse conditions. |
| When Reviewing the Dangerous Goods Declaration | Verify consistency among the SDS, invoice, packing list, and actual cargo labels. | Do not consider content confirmation unnecessary just because a declaration was submitted. | If discrepancies exist, request corrections from the shipper or manufacturer. |
| When Arranging Maritime Transport | Confirm the IMDG Code regulations, shipping line, CFS, consolidation agent, and hazardous materials warehouse requirements. | Do not assume CFS acceptance if the shipping line accepts the cargo. | Separately confirm shipping line approval, CFS in-gate acceptance, and consolidation permissibility. |
| When Arranging Air Transport | Check IATA Dangerous Goods Regulations, airline, courier company, and airport warehouse requirements. | Do not assume air acceptance because maritime transport was possible. | Verify quantity limits, passenger aircraft carriage permissions, and airline-specific conditions. |
| When Arranging Warehouse Storage | Confirm hazardous materials warehouse status, Fire Services Act classification, specified quantities, storage volume, and packaging form. | Do not assume warehouse acceptance because transport acceptance exists. | Confirm acceptance separately for transport and storage. |
| When Handling Small Quantity or Sample Cargo | Even for small quantities, verify SDS, ingredients, presence of batteries or sprays, and quantity. | Do not assume hazardous materials confirmation is unnecessary due to small quantity. | Check conditions for small or minimal quantity hazardous materials and acceptance eligibility. |
| When Suspecting Undeclared or Misdeclared Cargo | Halt operations, notify relevant parties, and obtain correct documentation. | Do not continue processing as regular cargo. | Perform safety checks, reconfirm acceptance, and clarify costs and responsibilities. |
Common Practical Issues
| Case | Issues | Documents/Contacts to Verify | Possible Actions |
|---|---|---|---|
| The SDS is outdated and transport information does not match current classification | UN numbers or dangerous goods classification may be incorrect. | Latest SDS, manufacturer confirmation documents, dangerous goods classification materials | Obtain the latest documents and reconfirm classification. |
| Contents of dangerous goods declaration and SDS do not match | Shipping line, airline, or CFS cannot accept the cargo. | SDS, dangerous goods declaration, invoice, packing list, shipper | Confirm with shipper or manufacturer to finalize correct classification and documents. |
| Labels or marks are missing | Could result in refusal of in-gate, acceptance refusal, or shipping/loading delays. | Photos of outer packaging, dangerous goods labels, UN number markings, physical inspection | Apply new labels, correct outer markings, or repackage before in-gate. |
| The airline refuses acceptance | Possible failure to confirm IATA conditions or airline-specific requirements. | SDS, dangerous goods declaration, airline responses, quantity information | Consider alternative airline, cargo aircraft only, or switch to maritime transport. |
| CFS refuses to accept hazardous goods | Confusion between shipping line approval and CFS acceptance conditions. | CFS response, shipping line response, dangerous goods information, in-gate requirements | Consider alternative CFS, hazardous materials warehouse, FCL handling, or alternate shipment. |
| Warehouse cannot store the cargo | Fire Services Act hazardous materials classification or warehouse equipment conditions not checked. | SDS, Fire Services Act applicability documents, storage quantities, warehouse response | Verify hazardous materials warehouse, quantities, and relation to specified quantities. |
| Cargo accepted as general goods later found to be hazardous materials | Possible undeclared hazardous goods or insufficient information. | SDS, actual cargo labels, invoice, shipper/manufacturer confirmation | Halt operations, notify relevant parties, and obtain correct documentation for reassessment. |
| Attempted to switch cargo accepted for maritime transport to air transport | Assuming maritime acceptance conditions apply to air transport. | IATA Dangerous Goods Regulations, airline responses, SDS, quantity and packaging details | Reconfirm with airlines; if unacceptable, maintain maritime transport or arrange alternative. |
4-Column Verification Checklist
| Verification Situation | Party to Confirm With | Items to Confirm | Actions if Issues Are Found |
|---|---|---|---|
| When the quotation request mentions chemicals, liquids, or samples | Shipper / Manufacturer | Check SDS, components, GHS labeling, transport information section, and hazardous materials applicability. | Do not finalize as regular cargo; request submission of documentation. |
| When receiving an SDS | Shipper / Manufacturer | Confirm it is the latest version and that Section 14 contains UN number, proper shipping name, class, packaging group, etc. | If any fields are blank or unclear, request manufacturer’s verification or hazardous materials classification documentation. |
| When receiving a hazardous materials declaration | Shipper / Declarant of Dangerous Goods | Check consistency with the SDS, invoice, packing list, and actual label on the cargo. | If discrepancies are found, correct them before submission. |
| When arranging maritime transport | Shipping Line / NVOCC / CFS / Consolidator | Confirm handling under the IMDG Code, shipping line approval, CFS in-gate acceptance, and consolidation permissibility. | If not accepted, consider alternative shipping line, different CFS, FCL shipment, or next vessel. |
| When arranging air transport | Airline / Courier Company / Air Freight Agent | Confirm handling under IATA Dangerous Goods Regulations, quantity limits, packaging, and passenger aircraft carriage eligibility. | If not accepted, consider cargo aircraft, alternate airline, or sea transport options. |
| When warehouse storage is required | Hazardous Materials Warehouse / General Warehouse / Shipper | Confirm Fire Services Act applicability, specified quantities, storage amounts, temperature, ventilation, and segregation requirements. | If general warehouse is not allowed, consider hazardous materials or dangerous goods warehouses. |
| When verifying labels and markings | Shipper / Warehouse / CFS / Air Freight Terminal | Check hazardous materials labels, UN number markings, marine pollutant marks, and lithium battery labels. | Before in-gate, implement corrections, re-labeling, or repackaging as needed. |
| When there is suspicion of undeclared or misdeclared cargo | Shipper / Warehouse / CFS / Shipping Line / Airline | Inspect cargo, SDS, hazardous materials declaration, in-gate status, and acceptance eligibility. | Halt operations, prioritize safety checks, and promptly notify relevant parties. |
Example 1: Attempting to Ship Liquid Samples as Regular Cargo
A shipper explained that the cargo was a small quantity of liquid samples and that treating it as regular cargo would not pose any issues, requesting an air freight quotation.
However, upon reviewing the SDS, it was found that the substance was flammable and included a UN number and dangerous goods class in the transport information section. In this case, even small quantities require hazardous materials verification.
The freight forwarder should check SDS Section 14, volume, quantity, packaging, airline conditions, and whether it can be handled as limited quantity dangerous goods.
If the airline cannot accept the shipment, alternatives such as using a different airline, cargo-only flights, ocean transport, or postponing the shipment should be proposed to the shipper.
Example 2: Carrier Accepts Dangerous Goods but CFS Cannot Accept Them
This refers to a case where the shipping line confirmed acceptance of the dangerous goods, but the CFS used for LCL consolidation responded that they could not accept the cargo for in-gate.
In hazardous materials transport, acceptance by the shipping line and acceptance by the CFS are separate determinations. It is necessary to verify the CFS’s hazardous materials acceptance class, in-gate dates, storage conditions, and compatibility for consolidation.
The freight forwarder should consider alternative CFS locations, hazardous materials warehouses, switching to FCL, different shipping lines, or alternative sailings.
To the shipper, explain clearly that although the shipping line has approved the cargo, the CFS cannot accept it; also outline alternative arrangements, additional costs, and potential schedule impacts.
Example 3: Case of Discrepancy Between SDS and Dangerous Goods Declaration
There are cases where the shipper submits both an SDS and a dangerous goods declaration, but the UN number or hazard class on the SDS does not match the information on the dangerous goods declaration.
In this situation, shipping lines, airlines, CFS operators, and warehouses cannot make acceptance decisions. Possible causes include an SDS for a different product, an outdated SDS version, errors in preparing the dangerous goods declaration, or misclassification.
The freight forwarder should verify with the shipper and manufacturer to confirm the correct product, the latest SDS version, accurate UN number, proper shipping name, hazard class, and packaging group.
After corrections, the dangerous goods declaration, invoice, packing list, and actual labels should be cross-checked before submitting to stakeholders.
Example 4: Case Where It Was Later Discovered That Storage in a General Warehouse Was Not Possible
This refers to a case involving hazardous materials confirmed as acceptable for transport, where temporary storage in a general warehouse was planned until the CFS in-gate date.
However, upon checking with the warehouse, it was found that due to hazardous materials classification under the Fire Services Act, specified quantities, storage volumes, and facility requirements, the general warehouse could not accept the cargo.
In this case, the ability to transport cargo as hazardous materials and the ability to store it in a domestic warehouse are separate considerations.
The freight forwarder should review options such as using a hazardous materials warehouse or dangerous goods warehouse, direct CFS in-gate, adjusting the in-gate date, or arranging a separate shipment, and reorganize the storage plan before and after transport accordingly.
Items to Confirm with the Shipper
For cargo that may be classified as hazardous materials, the freight forwarder should verify the following information with the shipper at an early stage.
- Whether the cargo qualifies as hazardous materials.
- Whether the latest Safety Data Sheet (SDS) is available.
- Whether Section 14 of the SDS, Transport Information, is included.
- Whether the UN number, proper shipping name, hazard class, and packaging group are confirmed.
- Whether a dangerous goods declaration is required.
- Whether conditions differ between maritime and air transport.
- Whether labels, marks, and outer package markings are required.
- Whether hazardous materials warehouses, CFS, air cargo terminals, or carriers can accept the cargo.
- Whether mixed loading or segregation requirements apply.
- If the cargo is not hazardous, whether documentation supporting this determination is available.
- Whether the cargo contains lithium batteries, aerosols, flammable liquids, corrosives, toxic substances, or marine pollutants.
Common Misunderstandings
In hazardous materials transport, judging solely by the product name or appearance can lead to misunderstandings.
| Misunderstanding | Practical Consideration | What Should Be Confirmed |
|---|---|---|
| All chemicals are hazardous materials. | Some chemicals do not qualify as dangerous goods for transport. | Check Section 14 of the SDS, UN number, and hazardous materials classification references. |
| Non-chemical items are not hazardous materials. | Lithium batteries, aerosol products, and batteries built into equipment require hazardous materials confirmation even if they are not classified as chemicals. | Verify presence of batteries, sprays, gases, liquids, and hazard labels. |
| If an SDS is available, shipment can be arranged as is. | The SDS is an initial reference and does not finalize transport eligibility or acceptance conditions. | Check transport information fields, dangerous goods declarations, and shipping line or airline conditions. |
| If the shipping line accepts the cargo, the CFS or warehouse will also accept it. | Acceptance decisions by shipping lines, CFS, and warehouses are independent. | Confirm CFS in-gate requirements, warehouse storage eligibility, and consolidation acceptance. |
| Small quantities do not require hazardous materials handling. | Hazardous materials confirmation is necessary even for small amounts, with simplified handling subject to conditions. | Check capacity, quantity, and conditions for limited or excepted quantities. |
| If it can be transported by sea, it can also be transported by air. | Air transport may have stricter restrictions than sea transport. | Confirm IATA Dangerous Goods Regulations, airline acceptance conditions, and passenger aircraft carriage limitations. |
| If there is a non-hazardous certification, no hazardous materials confirmation is required. | There may be contradictions between non-hazardous certificates, the SDS, product labels, and specifications. | Cross-check non-hazardous certificates, SDS, photos of the actual product, and manufacturer confirmation documents. |
| Being eligible for hazardous materials transport means it can be consolidated or stored together. | Transport eligibility, consolidation approval, and warehouse storage permissions are separate evaluations. | Confirm conditions with CFS operators, consolidation agents, hazardous materials warehouses, and receivers at the destination. |
Points Freight Forwarders Should Pay Attention To
Safe transportation of hazardous materials can only be achieved when shippers, manufacturers, freight forwarders, customs brokers, warehouses, CFS operators, shipping lines, and airlines share the same information.
- Do not determine whether cargo is hazardous goods or non-hazardous based solely on the product name.
- Check not only for the presence of an SDS but also review the transport information section carefully.
- Confirm the UN number, proper shipping name, hazard class, and packaging group together as a set.
- Verify conditions based on the premise that requirements differ between maritime and air transport.
- For hazardous goods, obtain prior confirmation from the shipping line or airline at the booking stage.
- Assume that some cargo may not be accepted by CFS operators, warehouses, trucking companies, or courier services.
- Deficiencies in labels or marks could result in refusal of in-gate or shipping delays.
- Check acceptability for mixed loading, segregation requirements, and storage conditions.
- If there is a possibility of undeclared or misdeclared cargo, do not continue to process it as regular cargo.
- If any doubts arise, obtain prior confirmation from the shipper, manufacturer, hazardous materials specialists, shipping line, airline, or warehouse.
Summary
Transportation of hazardous materials involves handling cargo that may pose risks such as fire, explosion, toxicity, corrosiveness, heat generation, or environmental pollution, following prescribed classifications, packaging, labeling, documentation, and loading conditions.
In freight forwarder operations, hazardous materials transport is not simply about whether the cargo can be carried. It requires verification of SDS, UN number, proper shipping name, dangerous goods class, packaging group, dangerous goods declaration, labels, marks, acceptance by shipping lines or airlines, warehouse storage availability, CFS in-gate acceptance, and compatibility for consolidation.
For maritime transport, the IMDG Code is central, while air transport relies on the IATA Dangerous Goods Regulations. However, practical transport also depends on acceptance conditions set by CFS operators, warehouses, delivery companies, courier services, and destination-side facilities.
In hazardous materials transportation, prioritizing "proper declaration and securing safe transport conditions" is more important than merely "speed of shipment." Although freight forwarders are not specialized hazardous materials classifiers, they play a critical role in confirming that required documents are complete, transport conditions are consistent, and all involved parties can accept the cargo.
The key point of this article is to regard hazardous materials transport not as an isolated document check but as a comprehensive operational process that links SDS, UN number, dangerous goods class, dangerous goods declaration, labeling, acceptance by carriers and airlines, CFS in-gate, warehouse storage, and compatibility for consolidation.
