Classification of solid hazardous chemicals

The classification of the fire hazard of items stored in warehouses as specified in the “Code for Fire Protection Design of Buildings” GBJ16 is as follows: The fire hazard of stored items can be divided into five categories according to Table 4.1.1. Table 4.1.1 Classification of the Fire Hazard of Stored Items Category of Stored Items Characteristics of Fire Hazard Class A 1. Liquids with a flash point < 28°C 2. Gases with an explosion limit < 10%, as well as solid substances that, when exposed to water or water vapor in the air, produce gases with an explosion limit < 10% 3. Substances that can decompose spontaneously at normal temperature or ignite or explode rapidly due to oxidation in the air 4. Substances that produce flammable gases when exposed to water or water vapor in the air at normal temperature, thereby causing combustion or explosion 5. Strong oxidizing agents that are highly prone to ignition or explosion when in contact with acids, heat, impact, friction, or flammable inorganic substances such as organic compounds or sulfur 6. Substances that can ignite or explode upon impact, friction, or contact with oxidizing agents or organic compounds Class B 1. Liquids with a flash point ranging from 28°C to < 60°C 2. Gases with an explosion limit ≥ 10% 3. Oxidizing agents belonging to Class A 4. Chemically flammable solid substances that do not belong to Class A 5. Oxidizing gases 6. Items that undergo slow oxidation upon contact with air at normal temperature, resulting in heat accumulation that leads to spontaneous ignition Class C 1. Liquids with a flash point ≥ 60°C 2. Combustible solids Class D Items that are difficult to burn Class E Non-combustible items Note: ① Examples of the classification of the fire hazard of stored items are provided in Appendix 4 of the “Code for Fire Protection Design of Buildings” GBJ16. ②When the weight of the combustible packaging for flammable or non-combustible items exceeds 1/4 of the weight of the items themselves, their fire hazard should be classified as Class C. Solid hazardous materials fall under Category 8.1; they are acidic and corrosive. It is necessary to determine whether they are flammable, and by referring to the table above, it can be determined which of categories A, B, or C they belong to.

Classes A, B, and C refer to the risk of combustion and explosion, whereas hazardous chemicals are classified based on the principle of \"priority-based classification\". In other words, the main hazardous characteristic of this hazardous chemical from your company is its corrosiveness. You can consult its safety data sheet to examine its flammability and explosivity properties, and make a determination after classifying it in accordance with the aforementioned \"Code for Fire Protection Design of Buildings\".