Class 1 Explosives
It refers to the instantaneous chemical reaction of violent chemical reactions under external influences such as heat, pressure, impact, etc.
A large amount of gas and heat are generated during the period, causing the surrounding pressure to rise sharply, resulting in an explosion;
Common products include fireworks, etc.
Class 2 Gases
It means that the gas is compressed into a compressed gas or liquefied gas and stored in a pressurized container. Regardless of their own nature, such objects have the characteristics of thermal expansion. If the pressure is greater than When the container can withstand the pressure limit, or the impact damages the container, it can cause explosion and combustion.Danger. Divided into three categories according to attributes: toxic gas, flammable gas, non-flammable, non-toxic gas; Common products are lighters, insecticide sprays, refrigerants, fire extinguishers, etc.:
Class 3 Flammable Liquids
Refers to any article that exists in liquid form at room temperature, is easy to burn and volatilize, and its flash the temperature below 61°C is likely to belong to this kind of articles. The evaporation of flammable liquids is generally toxic, and some there are also narcotic properties, which are divided into three categories according to their properties: low flash point liquids (flash point <-18°C) such as acetaldehyde acetone, etc., medium flash point liquid (-18°C< flash point<23°C) such as benzene, methanol, etc., high flash point liquid solids (23°C< flash point 61C) such as cyclooctane, chlorobenzene, anisole, etc.Common products are perfume, nail polish, etc.
Class 4 flammable solid, substance liable to spontaneous combustion and substances which, in contact with water, emit flammable gases
When these items come into contact with water or damp, violent chemical reactions will occur, releasing a large amount of easily Chemicals that burn gas and heat, some of which can burn or explode without an open flame; Common products include hydrosulfite, camphor balls, etc.:
Class 5 Oxidizing substances and organic peroxides
Such products have strong oxidizing properties, and specific varieties may also interfere with each other touch. Except for some organic oxidants, although it does not burn itself, under certain conditions, after substances subject to friction, vibration, high heat or alkali, damp, contact with flammables, organic when mixed with substances, reducing agents and items incompatible with properties, it can be decomposed and burn and explode fry;Common products include sodium percarbonate, hydrogen peroxide, sodium perchlorate, sodium chlorate, potassium nitrate, etc.
Class 6 Toxic and infectious substances
Such products are highly toxic, and when a small amount penetrates into the human body or touches the skin, It can cause local irritation or poisoning, or even death. It can be divided into three categories according to its attributes: highly toxic,there are drugs and harmful substances;common products include pesticides, tetramine, etc.
Class 7 Radioactive material
Such items are radioactive, and can emit radiation with strong penetrating power, which cannot be detected by human sensory organs.perceived rays, such as large doses of radioactive substances, can damage the human body when they come into direct contact common products include radioactive ores and ores, radium, etc.
Class 8 Corrosive Substances
Such products are highly corrosive, and contact with other items may cause corrosion due to corrosion, destruction occurs, and burns can occur in contact with the human body, and it is difficult to treat; common products include 84 disinfectant, sulfuric acid, caustic soda, sodium sulfide, bleaching powder, hydrofluoric acid battery, etc.;
Class 9 Miscellaneous substances and articles
means substances and articles which, in transport, present a hazard not included in other classes,common products include carp batteries, new energy vehicles, etc.
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