In addition, China divides hazardous chemicals into eight categories, and each category is divided into several items, namely:
Category I: Explosives. Explosives refer to articles that can undergo violent chemical reactions under the external action (such as heat, friction, impact, etc.). ), and instantly produce a lot of gas and heat, so that the surrounding pressure rises sharply and explodes, causing damage and injury to the surrounding environment, equipment and personnel.
Category II: compressed gas and liquefied gas. It refers to compressed, liquefied or pressure-dissolved gases. When these articles are heated, impacted or strongly vibrated, the pressure in the container increases sharply, which leads to container rupture, material leakage and explosion.
Category III: Flammable liquids. These substances are volatile at room temperature, and their vapor will form an explosive mixture when mixed with air. Methanol and ethanol belong to the second item of the third category: liquid with medium flash point, that is, liquid with flash point of-18℃ ~ < 23℃.
The fourth category: flammable solids, spontaneous combustion articles and flammable articles when wet. These items are prone to fire.
Category 5: oxidants and organic peroxides. These articles are highly oxidizing and easy to cause combustion and explosion.
Category VI: Toxic substances. Toxic substances refer to substances that can interact with body fluids and tissues in biochemical or biophysical ways, disturb or destroy the normal physiological functions of the body, cause temporary or permanent pathological changes, and even endanger life, such as cyanide, arsenic compounds, chemical pesticides, etc.
Category VII: Radioactive substances. They are dangerous chemicals, but they are not under the management scope of the Regulations on the Safety Management of Dangerous Chemicals, and the state also has special regulations to manage them.
Class VIII: Corrosive products. Corrosive products refer to solids or liquids that can burn human tissues and cause damage to metals and other objects.
In addition, the warehouses storing methanol and ethanol are classified according to their fire protection levels, and the warehouses with different fire protection levels are also different in /information/newsdetail/2285.