GB 6944-2025 GB 6944-2025 Classification and code of dangerous goods
1 Scope
This standard specifies the general requirements for classification of dangerous goods and classification and code of dangerous goods.
This document is applicable to the transport of dangerous goods and related activities.
This document is not applicable to dangerous goods transported in bulk by waterway.
2 Normative references
The following normative documents contain provisions which, through reference in this text, are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 261 Determination of flash point - Pensky-Martens closed cup method
GB/T 3536 Petroleum products - Determination of flash and fire points - Cleveland open cup method
GB/T 5208 Determination of flash point - Rapid equilibrium closed cup method
GB/T 6536 Standard test method for distillation of petroleum products at atmospheric pressure
GB/T 7534 Volatile organic liquids for industrial use - Determination of boiling range
GB 11806 Regulations for the safe transport of radioactive material
GB 12268-2025 List of dangerous goods
GB 14371 Dangerous goods - Requirements of the hazard classification procedure and compatibility for explosives
GB 19452 Safety code for inspection of hazardous properties for dangerous goods of oxidizing substances
GB 19521.4 Safety code for inspection of hazardous properties for dangerous good of substances which in contact with water emit flammable gases
GB 19521.5 Safety code for inspection of hazardous properties for dangerous goods of pyrophoric solid
GB/T 21612 Dangerous goods - Test method of self heating for flammable solids
GB/T 21617 Dangerous goods - Test methods for oxidizing solids
GB/T 21618 Dangerous goods - Test method for burning rate of flammable solids
GB/T 21619 Dangerous goods - Test method for flammable solids which in contacting with water emit flammable gases
GB/T 21620 Dangerous goods - Test methods for oxidizing liquids
GB/T 21622 Dangerous goods - Sustained combustibility test for flammable liquids
GB/T 21623 Dangerous goods - Viscosity test for flammable viscous liquids
GB/T 21624 Dangerous goods - Solvent separation test for flammable viscous liquids
GB/T 21775 Determination of flash point - Closed cup equilibrium method
GB/T 21789 Petroleum products and other liquids - Determination of flash point - Abel closed cup method
GB/T 21790 Determination of flash/no flash - Rapid equilibrium closed cup method
GB/T 21792 Determination of flash/no flash - Closed cup equilibrium method
GB/T 21849 Chemical products for industrial use - Determination of inflammation of gases formed after hydrolysis of solids and liquids
GB/T 21850 Chemical products for industry use - Determination of spontaneous combustion of solids and liquids
GB/T 27862 Testing method for classification of chemical hazards - Fire potential and oxidizing ability of gases and gas mixtures
GB 30000.28 Rules for classification and labelling of chemicals - Part 28: Hazardous to the aquatic environment
NB/SH/T 0558 Petroleum fractions - Determination of boiling range distribution - Gas chromatography
UN Recommendations on the transport of dangerous goods: Model regulations (Rev.23)
UN Manual of tests and criteria (eighth revised edition)
3 Terms and definitions, abbreviations and symbols
3.1 Terms and definitions
For the purposes of this document, the terms and definitions defined in United Nations Recommendations on the Transport of Dangerous Goods - Model Regulations (Rev.23) (hereinafter referred to as Model regulations), as well as the following, apply.
3.1.1
dangerous goods
substances and articles with dangerous characteristics such as explosion, combustion, combustibility, toxicity, infection, corrosion, radioactivity and environmental hazard, which are listed in GB 12268-2025, Table 1 Dangerous goods list (hereinafter referred to as the Dangerous goods list)
3.1.2
UN number
4-digit Arabic numerical number for identifying a specific type or class of dangerous goods as set out in the Model Regulations
3.2 Abbreviations
For the purposes of this document, the following abbreviations apply.
BCF: Bioconcentration Factor
NOEC: No observed effect concentration, mg/L
.......
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4 General requirements
4.1 Classes, divisions and packing groups of dangerous goods
4.1.1 Dangerous goods are classified into 9 classes based on the dangers or major hazards they possess, among which the Classes 1, 2, 4, 5 and 6 are further divided into divisions.
Class 1 Explosives
Division 1.1 Substances and articles which have a mass explosion hazard;
Division 1.2 Substances and articles which have a projection hazard but not a mass explosion hazard;
Division 1.3 Substances and articles which have a fire hazard and either a minor blast hazard or a minor projection hazard or both, but not a mass explosion hazard;
Division 1.4 Substances and articles which present no significant hazard;
Division 1.5 Very insensitive substances and articles which have a mass explosion hazard;
Division 1.6 Extremely insensitive substances and articles which do not have a mass explosion hazard.
Foreword i
1 Scope
2 Normative references
3 Terms and definitions, abbreviations and symbols
3.1 Terms and definitions
3.2 Abbreviations
3.3 Symbols
4 General requirements
4.1 Classes, divisions and packing groups of dangerous goods
4.2 Classification of dangerous goods
4.3 Precedence of hazard characteristics of dangerous goods
4.4 Sample classification for transport
4.5 Classification of articles as articles containing dangerous goods, N.O.S.
5 Classification of dangerous goods
5.1 Class 1 Explosives
5.2 Class 2 Gases
5.3 Class 3: Flammable liquids
5.4 Class 4: Flammable solids; substances liable to spontaneous combustion; substances which, in contact with water, emit flammable gases
5.5 Class 5: Oxidizing substances and organic peroxides
5.6 Class 6: Toxic substances and infectious substances
5.7 Class 7: Radioactive material
5.8 Class 8: Corrosive substances
5.9 Class 9: Miscellaneous dangerous substances and articles, including environmentally hazardous substances
6 Code of dangerous goods
Bibliography
