What Are Dangerous Goods (DG) in Air Freight?

 

Dangerous Goods Shipping, Classification, Packaging and Regulations Explained

 

Summary

 

• Dangerous Goods (DG) are substances or articles that may pose a risk to aircraft, passengers, crew, cargo or the environment during air transportation. They are also known as hazardous materials (HazMat) or restricted articles.
• Air freight dangerous goods shipments are subject to strict international regulations, including the IATA Dangerous Goods Regulations (DGR) and ICAO Technical Instructions.
• Dangerous goods must be correctly classified, packaged, marked, labelled and documented before they can be accepted for air transport.
• Common DG shipments include lithium batteries, chemicals, flammable liquids, gases, dry ice, medical materials and industrial products.
• Professional DG logistics requires trained specialists, compliant packaging solutions and accurate documentation to avoid delays, penalties and safety risks.

 

What Does Dangerous Goods (DG) Mean in Air Freight?

 

Dangerous Goods (DG) refers to products, substances or materials that can create a potential hazard during transportation by air.

 

These goods may present risks such as:

 

• Fire
• Explosion
• Chemical reactions
• Toxic exposure
• Corrosion
• Environmental contamination
• Pressure-related incidents

 

Because aircraft operate in a highly controlled environment, dangerous goods transportation requires special safety procedures.

 

According to the International Air Transport Association (IATA), dangerous goods are items that may endanger the safety of an aircraft or persons onboard and are regulated through internationally recognized transport standards.

 

Why Are Dangerous Goods Regulated in Air Freight?

 

Air freight is one of the fastest and most reliable transport methods worldwide. However, aircraft environments create specific challenges:

 

• Limited access during flight
• High altitude conditions
• Temperature and pressure changes
• Large quantities of cargo transported simultaneously

 

A damaged or incorrectly declared dangerous goods shipment could affect:

 

• Aircraft safety
• Flight operations
• Cargo handling personnel
• Airports
• Other shipments

 

For this reason, international aviation authorities have established detailed rules for DG transport.

 

Dangerous Goods Regulations in Air Transport

 

IATA Dangerous Goods Regulations (DGR)

 

The IATA Dangerous Goods Regulations are the global industry standard used by airlines, freight forwarders and logistics providers.

 

The regulations define requirements for:

 

• Classification
• Packaging
• Labelling
• Documentation
• Handling
• Acceptance procedures

 

ICAO Technical Instructions

 

The International Civil Aviation Organization (ICAO) establishes the global technical framework for safe dangerous goods transportation by air.

 

National aviation authorities implement these requirements through local regulations.

 

Examples of Dangerous Goods in Air Freight

 

Many everyday products can be classified as dangerous goods depending on their chemical composition, quantity or packaging.

 

Common examples include:

 

Lithium Batteries

 

Lithium batteries are among the most frequently transported dangerous goods.

 

Examples:

 

• Lithium-ion batteries
• Laptop batteries
• Smartphone batteries
• Battery packs
• Electric vehicle batteries

 

Potential risks:

 

• Thermal runaway
• Fire
• Short circuits

 

Lithium battery shipments require special classification, packaging and documentation.

 

Flammable Liquids

 

Examples:

 

• Paints
• Solvents
• Adhesives
• Perfumes
• Alcohol-based products
• Cleaning chemicals

 

These products may release flammable vapours and require controlled handling.

 

Compressed Gases

 

Examples:

 

• Industrial gases
• Aerosols
• Medical gases
• Refrigerant gases

 

Risks include:

 

• Pressure release
• Leakage
• Explosion hazards

 

Chemical Products

 

Examples:

 

• Laboratory chemicals
• Industrial chemicals
• Cleaning agents
• Manufacturing materials

 

Depending on their properties, chemicals may be:

 

• Toxic
• Corrosive
• Reactive
• Environmentally hazardous

 

Dry Ice (Carbon Dioxide Solid)

 

Dry ice is commonly used as a cooling agent for:

 

• Pharmaceuticals
• Medical shipments
• Food products

 

Because dry ice releases carbon dioxide gas, it requires special handling and documentation.

 

Biological and Medical Materials

 

Examples:

 

• Diagnostic samples
• Biological substances
• Infectious materials
• Medical products

 

These shipments require strict packaging and identification procedures.

 

The 9 Dangerous Goods Classes

 

Dangerous goods are internationally divided into nine hazard classes.

 

Class 1 – Explosives

 

Includes:

 

• Fireworks
• Ammunition
• Explosive materials

 

These goods have significant restrictions for air transport.

 

Class 2 – Gases

 

Includes:

 

• Flammable gases
• Non-flammable gases
• Toxic gases

 

Examples:

 

• Propane
• Oxygen
• Refrigerants

 

Class 3 – Flammable Liquids

 

Examples:

 

• Fuel
• Solvents
• Paint products

 

Class 4 – Flammable Solids

 

Includes:

 

• Self-reactive substances
• Combustible solids
• Materials that ignite spontaneously

 

Class 5 – Oxidizing Substances and Organic Peroxides

 

Examples:

 

• Oxidizing chemicals
• Chemical compounds that accelerate combustion

 

Class 6 – Toxic and Infectious Substances

 

Includes:

 

• Poisonous materials
• Infectious biological substances

 

Class 7 – Radioactive Materials

 

Examples:

 

• Medical radioactive materials
• Industrial radioactive substances

 

Class 8 – Corrosive Substances

 

Examples:

 

• Acids
• Batteries
• Corrosive chemicals

 

Class 9 – Miscellaneous Dangerous Goods

 

Includes materials with transport risks that do not fit into the other categories.

 

Examples:

 

• Lithium batteries
• Environmentally hazardous substances
• Dry ice

 

How Are Dangerous Goods Classified?

 

Correct classification is one of the most important steps in DG shipping.

 

The shipper is responsible for correctly identifying whether a product qualifies as dangerous goods.

 

The classification process typically includes:

 

• Product identification
• Chemical analysis
• Safety Data Sheet (SDS) review
• UN number assignment
• Hazard class determination
• Packing group identification

 

What Is a UN Number for Dangerous Goods?

 

A UN Number is a four-digit identification number assigned to dangerous substances and articles.

 

Examples:

 

• UN3481 – Lithium-ion batteries contained in equipment
• UN1845 – Dry ice
• UN1203 – Gasoline

 

The UN number helps carriers, airports and authorities identify the specific dangerous goods being transported.

 

Dangerous Goods Packaging Requirements

 

Dangerous goods cannot be shipped using standard packaging.

 

Packaging must comply with international regulations and may require:

 

• Certified UN packaging
• Special containers
• Leak-proof protection
• Shock protection
• Temperature control

 

The correct packaging depends on:

 

• Hazard class
• Quantity
• Transport mode
• Packing group

 

Dangerous Goods Labelling and Marking

 

DG shipments require specific markings so that everyone handling the cargo understands the risks.

 

Required information may include:

 

• Hazard labels
• UN number
• Proper shipping name
• Handling instructions
• Orientation arrows
• Lithium battery markings

 

Incorrect labels can result in shipment rejection or regulatory penalties.

 

Dangerous Goods Documentation

 

Proper documentation is essential for successful DG transport.

 

Shipper’s Declaration for Dangerous Goods

 

The Shipper’s Declaration for Dangerous Goods confirms:

 

• Correct classification
• Proper packaging
• Compliance with regulations

 

It is one of the most important documents in air freight DG shipments.

 

Air Waybill (AWB)

 

The Air Waybill contains:

 

• Shipment details
• Sender and receiver information
• Transport information

 

Dangerous goods must be correctly declared on the AWB.

 

Safety Data Sheet (SDS)

 

The SDS provides information about:

 

• Chemical properties
• Hazards
• Handling requirements
• Emergency procedures

 

Who Is Responsible for Dangerous Goods Compliance?

 

DG compliance involves multiple parties.

 

Shipper Responsibility

 

The shipper must ensure:

 

• Correct classification
• Proper packaging
• Accurate documentation
• Correct labelling

 

Freight Forwarder Responsibility

 

Freight forwarders support:

 

• Documentation checks
• Transport planning
• Carrier coordination
• Compliance verification

 

Airline Responsibility

 

Air carriers verify:

 

• Acceptance requirements
• Documentation
• Packaging compliance
• Loading procedures

 

Ground Handling Responsibility

 

Airport handling companies manage:

 

• Storage
• Security checks
• Loading procedures
• Transfer operations

 

Dangerous Goods Training Requirements

 

Because DG handling involves safety risks, employees involved in DG transportation require appropriate training.

 

Training areas include:

 

• Classification
• Packaging
• Documentation
• Emergency procedures
• Regulatory updates

 

IATA provides specific dangerous goods training programs for professionals involved in air transport.

 

Dangerous Goods and Lithium Battery Transport

 

Lithium batteries have become one of the most important topics in modern DG logistics.

 

Growing demand from industries such as:

 

• Electric mobility
• Consumer electronics
• Renewable energy
• Energy storage

 

has significantly increased lithium battery shipments.

 

Companies must carefully manage:

 

• Battery type
• Watt-hour rating
• Packaging requirements
• Quantity limitations
• Documentation

 

Advantages of Professional Dangerous Goods Logistics

 

Regulatory Compliance

 

Experts understand changing international requirements.

 

Reduced Shipment Delays

 

Correct documentation prevents rejection at airports.

 

Improved Safety

 

Professional handling reduces risks for:

 

• Cargo
• Aircraft
• Personnel

 

Global Transport Capability

 

Experienced providers can coordinate DG shipments internationally.

 

Challenges of Dangerous Goods Air Freight

 

Complex Regulations

 

DG rules vary depending on:

 

• Product type
• Destination country
• Airline requirements

 

Higher Transport Costs

 

Dangerous goods often require:

 

• Special packaging
• Additional handling
• Certified processes

 

Limited Carrier Availability

 

Not every airline accepts every type of dangerous goods.

 

Documentation Errors

 

Incorrect declarations can cause:

 

• Delays
• Rejections
• Additional costs

 

Dangerous Goods Solutions from OnTime Transport Group

 

OnTime Transport Group supports companies with specialized logistics solutions for complex and sensitive shipments.

 

Our services include:

 

• Dangerous goods transport coordination
• Air freight solutions
• International logistics management
• Documentation support
• Customs coordination
• Multimodal transport solutions

 

For companies shipping hazardous materials internationally, professional DG expertise is essential to ensure safety, compliance and reliable delivery.

 

With experienced logistics partners and global transport capabilities, OnTime Transport Group helps businesses manage dangerous goods shipments efficiently and securely.

 

Frequently Asked Questions About Dangerous Goods

 

What are Dangerous Goods in air freight?

 

Dangerous Goods are materials or products that may pose risks to aircraft safety, people or the environment during air transportation.

 

What is DG in logistics?

 

DG stands for Dangerous Goods and refers to regulated hazardous materials requiring special transport procedures.

 

Are lithium batteries dangerous goods?

 

Yes. Many lithium battery shipments are classified as dangerous goods because they can create fire risks if damaged or improperly handled.

 

Can dangerous goods be shipped by air?

 

Yes, many dangerous goods can be transported by air if they meet applicable regulations for classification, packaging, labelling and documentation.

 

Who is responsible for dangerous goods classification?

 

The shipper is responsible for ensuring correct classification of dangerous goods.

 

What documents are required for dangerous goods shipments?

 

Common documents include:

 

• Shipper’s Declaration
• Air Waybill
• Safety Data Sheet
• Packing documentation