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Classification of dangerous goods

Issuing time:2019-09-05 09:02

Class 1 explosives

The Class 1 explosives


A) explosive substances;

B) explosive items;

C) materials or articles not mentioned in the above 2 items are manufactured for the purpose of producing the actual effect of explosion or fireworks.

The first category is divided into six items.

1.1 materials and articles with overall explosion risk

1.2 substances and articles with a risk of ejaculation but without the risk of integral explosion

1.3 there is a risk of combustion and a risk of local explosion or local injection or both, but there is no overall explosion risk

Dangerous substances and articles

Including substances and articles that meet one of the following conditions:

A) materials and articles that may produce large amounts of radiant heat;

B) substances and articles that are subject to local explosion or ejaculation effects or both from successive combustion.

1.4 substances and articles that do not present significant risk

Including transportation in case of ignition or ignition only cause minor

Dangerous substances and articles; The impact is mainly limited to the package itself, and it is expected that the debris emitted is not big and the range is not far, and the external fire will not cause the instantaneous explosion of almost all the contents of the package.

1.5 very insensitive substances with overall explosion risk

A) including substances which are of a general explosive risk but are so insensitive as to have little possibility of causing or changing from combustion to explosion under normal transport conditions.

B) when there is a large amount of this material in the cabin, it is more likely to turn from combustion to explosion.

1.6 extremely insensitive items without overall explosion risk

A) includes only materials that contain highly insensitive explosive materials and have a negligible probability of accidentally causing an explosion or transmission


B) the danger of an article is limited to the explosion of a single article.

Class 2 gases

Gases of this class refer to substances that satisfy one of the following conditions:

A) at 50℃, the vapor pressure is greater than 300 kpa;

B) completely gaseous substance at 20℃ at 101.3 kpa standard pressure.

This class includes compressed gases, liquefied gases, dissolved gases and refrigerated liquefied gases, one or more gases and one or more

A mixture of vapours, gaseous substances, and aerosols of other classes.

The second category is divided into three items.

Item 2.1 flammable gas

This heading includes gases which meet one of the following conditions under conditions 201 and 101.3:

A) gases with an explosion limit less than or equal to 13%;

B) a gas whose explosion limit (combustion range) is greater than or equal to 12%, regardless of its lower deflagration limit.

2.2 non-flammable and non-toxic gases

This item includes asphyxiating gases, gasifying gases and gases not included in other categories.

This heading does not include gases which have not been liquefied or frozen at temperatures of 201 and have pressures of less than 200 kpa.

2.3 toxic gases

This item includes gases that satisfy one of the following conditions:

A) gases that are toxic or corrosive to human health;

B) toxic or corrosive gas with LC50 value less than or equal to 5000 mL/m3 in acute lethal concentration of 50%.

Note: if male and female young rats were continuously inhaled for 1h, the gas concentration of half of the tested animals in 14d was most likely to be caused.

Class 3 flammable liquids

This category includes:

A) flammable liquid

Flammable liquids or mixtures of liquids, or liquids with solids in solution or suspension, do not have a high closed cup test flash point

At 60℃, or open the cup test flash point is not higher than 65.6 it. Flammable liquids also include liquids that meet one of the following conditions:

A) the liquid to be transported at a temperature equal to or above the flash point;

B) transport or submit to transport in a liquid state at high temperature and at a temperature equal to or below the maximum transport temperature

Vapor substance.

Flash point: the lowest temperature at which the mixture of the vapor and air to be tested meets the external flame for flashover under specified test conditions.

C) liquid desensitized explosive

Class 4 flammable solids, substances that are prone to spontaneous combustion, and substances that emit flammable gases when exposed to water

The fourth category is divided into three items.

Item 4.1 flammable solids, self-reactive substances and solid desensitized explosives


A) flammable solids: solids that are easy to burn and solids that may ignite by friction;

B) self-reactive substances: thermal instables prone to intense exothermic decomposition even in the absence of oxygen (air)


C) solid desensitized explosives: in order to inhibit the explosive property, slightly moisten the explosive substance with water or use it.

A homogeneous solid mixture formed by diluting an explosive substance.

4.2 substances liable to spontaneous combustion

This item includes:

A) ignition substance: a substance that burns in less than 5 minutes even if it has only a small amount of contact with air. Including mixtures and solutions (liquid or solid);

B) self-heating substance: a substance other than ignition substance that can generate heat by contact with air.

4.3 substances which give off flammable gas in contact with water

A substance that, when exposed to water, gives off a flammable gas that, when mixed with air, can form an explosive mixture.

Class 5 oxidizing substances and organic pervaporation

The fifth category is divided into two items.

Item 5.1 vaporized substances

A substance that does not necessarily burn by itself but may cause or promote the combustion of other substances, usually by the release of oxygen.

Item 5.2 organic peroxide

An organic substance containing a bivalent superradical (-0-0-) structure.

Class 6 toxic and infectious substances

The sixth category is divided into two items

6.1 toxic substances

Substances that may cause death or serious injury or damage to human health if swallowed, inhaled or in contact with skin.

6.2 items of infectious substances

A substance known or reasonably thought to contain a pathogen.

Class 7 radioactive substances

Substances containing radionuclides whose activity concentration and total activity exceed the limit specified in GB 11806.

Class 8 corrosive substances

The contact of biological tissue through chemical action can cause serious damage or damage other goods when leakage occurs

Or a vehicle. This class includes substances that satisfy one of the following conditions:

A) full thickness of intact skin tissue during observation period of up to 14 days after exposure for more than 60min but no more than 4h

Damaged substance

B) are determined not to cause full thickness damage to intact skin tissue, but to surface rot of steel or aluminum at test temperature of 55C

Material with corrosion rate over 6.25 mm/a.

Category 9 miscellaneous hazardous substances and articles, including substances hazardous to the environment

Substances and articles that are dangerous but do not meet other definitions.

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