What are the common dangerous substances

Including explosives, compressed gases, liquefied gases, flammable liquids, flammable solids, spontaneous combustion substances, flammable substances when wet, oxidants, organic oxides, drug corrosion products, etc. According to the regulations and standards published by me at present, there are several items in each category, namely: Category: Explosives refer to explosive reactions caused by external actions (heat, friction, impact, etc.). ), can instantly generate gas heat, make the surrounding pressure rise sharply, and make the surrounding environment and equipment explode. There are five national standards for explosives for man-made destructive articles, three of which include dangerous goods, and the other two specifically refer to ammunition. Item 1: perchloric acid, a dangerous substance for overall explosion, item 2: dinitrobenzene, a substance with greater combustion risk, and item 3: tetrazole-1- acetic acid, a severely dangerous explosive substance. Category II: Compressed gas Liquefied gas refers to gas articles that are compressed, liquefied or dissolved under pressure after heating. During the shock or strong earthquake, the pressure in the container increases sharply, which leads to the leakage and explosion of the container rupture material. 1 Item: combustible gases such as ammonia, carbon monoxide and methane. Item 2: Gas (including combustion-supporting gas) nitrogen, oxygen, etc. Item 3: toxic gas chlorine (liquefied), and the third ammonia (liquefied): flammable liquid. This substance is volatile at temperature, and its vapor and air can be mixed into an explosive mixture. Item 3: Item 1: Liquid with low flash point, i.e. liquid acetaldehyde and acetone with flash point lower than-18℃. Item 2: Flash point liquids, namely liquid benzene and methanol, with a flash point of-18℃ ~ < 23℃. Item 3: High flash point. The fourth category, such as anisole: flammable solids and spontaneous combustion articles are prone to fire when wet. According to the combustion characteristics, Item 3, 1: Flammable solids refer to low ignition point, small impact force and low friction sensitivity, which are easily ignited by external fire sources, and solid red phosphorus and sulfur can emit toxic smoke or gas. Item 2: Spontaneous combustion articles refer to yellow phosphorus with low ignition point, which is easy to undergo oxidation reaction with air and release heat. Titanium trichloride and other third items. Flammable materials will react violently when they meet water or moisture. Flammable gases and heated materials need an open flame to burn or explode metal sodium, potassium hydride, etc. Category V: Oxidizers Organic oxides are easy to cause combustion and explosion. According to Group II 1 Item: Oxidizers refer to ammonium chlorate, which is easy to release oxygen and has strong oxidation when heated. The second item is potassium permanganate, etc. Organic oxides refer to organic compounds containing oxygen bonds, which are flammable, explosive, easy to reduce fever and shock, such as benzoyl oxide and methyl ethyl ketone oxide. Category VI: Toxic substances: Toxic substances refer to all kinds of cyanide and arsenic compounds, which can enter (substances) and accumulate to a certain amount, interact with body fluids and tissues, or the physical action of substances disturbs or destroys the physiological functions of the body, causing temporary or permanent lesions or even life-threatening items. Chemical pesticides, etc. Category VII: Radioactive substances fall within the management scope of the Regulations on the Safety Management of Hazardous Chemicals. Class VIII: Corrosive substances refer to solid or liquid substances that can burn human tissues and cause damage to metals. Item 3: chemical properties Item 1: acidic corrosive substances such as sulfuric acid, nitric acid and hydrochloric acid Item 2: alkaline corrosive substances such as sodium hydroxide and calcium hydrogen sulfate Item 3: dichloroacetaldehyde, hydrochloric acid and other corrosive substances.