Liquefied petroleum gas (LPG)

Liquefied petroleum gas (LPG) is a colorless volatile liquid obtained from natural gas or petroleum through pressurization and cooling liquefaction in the refinery. It is very easy to self ignite. When its content in the air reaches a certain concentration range, it will explode when encountering open fire.

Natural gas

Natural gas refers to all gases naturally existing in nature, including gases formed by various natural processes in the atmosphere, hydrosphere, and lithosphere (including oilfield gas, gas field gas, mud volcanic gas, coalbed gas, and biogenic gas)

Methylbenzene

Toluene is an organic compound with the chemical formula of C7H8. It is a colorless, volatile liquid with special fragrance. It has strong refraction. It is miscible with ethanol, ether, acetone, chloroform, carbon disulfide and glacial acetic acid, and very slightly soluble in water. Flammable, vapor can form explosive mixture with air, and explosion can occur when the volume concentration of the mixture is in a low range. Low toxicity, median lethal dose (rat, oral) 5000mg/kg. High concentration gas is anesthetic and irritant.

Formaldehyde

Formaldehyde, also known as formic aldehyde, is an organic compound, the chemical formula is HCHO or CH2O, and the molecular weight is 30.03. It is colorless and irritating gas, which can stimulate human eyes, nose, etc. The relative density of gas is 1.067 (air=1), and the density of liquid is 0.815g/cm3 (- 20 ℃). Melting point - 92 ℃, boiling point - 19.5 ℃. Soluble in water and ethanol. The highest concentration of aqueous solution can reach 55%, generally 35% - 40%, and usually 37%. It is called formaldehyde water, commonly known as formalin

Sulfuric acid

Sulfuric acid is the most active binary inorganic strong acid, which can react with most metals. High concentration sulfuric acid has strong water absorption, and can be used as a dehydrating agent to carbonize such carbohydrate containing substances as wood, paper, cotton and linen fabrics and biological flesh. When mixed with water, a large amount of heat will also be released. It is highly corrosive and oxidizing, so it should be used with caution. It is an important industrial raw material, which can be used in the manufacture of fertilizers, drugs, explosives, pigments, detergents, batteries, etc. It is also widely used in the purification of petroleum, metal smelting, dyes and other industries. It is commonly used as a chemical reagent, and can be used as a dehydrating agent and a sulfonating agent in organic synthesis.

N-butyl alcohol

N-butanol, also known as 1-butanol, is an organic compound. It is a colorless transparent liquid, slightly soluble in water, and soluble in ethanol, ether and other organic solvents. It is mainly used to prepare esters, plastic plasticizers, medicine, paint, and can also be used as a solvent.