Diisopropyl peroxide (Class V hazardous material)
Also known as sulfurizing agent DCP, Dicumyl peroxide. Molecular formula C18H22O2, relative molecular mass 270.37. Physical and chemical properties White crystal. Melting point 41~42°C. Relative density 1.082. Relative density 1.082, Decomposition temperature 120~125°C. Stable at room temperature. Stable at room temperature, gradually become yellowish in the light. Insoluble in water, soluble in ethanol, ether, acetic acid, benzene and petroleum ether. Active oxygen content 5.92% (purity 100%), 5.62% (purity 95%). Dissolved in benzene half-life:171℃:1min;117℃:10h;101℃:100h.It is a strong oxidizing agent. Reacts with combustible materials, reducing agents, acids, alkalis, rust, heavy metals. Gradually turns into light yellowish color when seeing light, stable at room temperature, forms polymer compounds above 100℃. Active oxygen content is 5.92% when purity is 100%. Half-life (dissolved in benzene): 1min at 171°C; 10h at 117°C; 100h at 101°C. Strong oxidizing agent, reacts violently with sulfur and perchloric acid, burns slowly when exposed to fire, insensitive to vibration and friction.
Battery pack (Class IX dangerous goods)
Liquid Nitrogen (Class IX Dangerous Goods)
Is inert, colorless, odorless, noncorrosive, nonflammable, and has an extremely low temperature. Nitrogen makes up the majority of the atmosphere (78.03% by volume and 75.5% by weight). Nitrogen is inactive and does not support combustion; however, it is not a necessary element to sustain life. Colorless, odorless, tasteless, and almost completely sui generis, nitrogen is not flammable.
Physical properties: density 1.25kg/m3 (0℃, gas), 804kg/m3 (-183℃, liquid)
Melting point-210℃; Boiling point-195.8℃; Critical temperature-147℃; Critical pressure3.39Mpa
Uses: food refrigeration, metallurgical industry, washing and protective gas, used in gas lasers, air equipment, power transmission and waste treatment.
Precautions: It is a kind of asphyxiating gas, liquid nitrogen can cause frostbite to people because of low temperature, so it should not be contacted with skin.
Liquid nitrogen is colorless, odorless, not easy to burn, will not explode, boiling point is -196 degrees Celsius.
Elastic Sulfur (Class IX Dangerous Goods)
It is a dark yellow elastic solid, less soluble in carbon disulfide than other sulfur isomers. Insoluble in water and slightly soluble in alcohol, it is one of the many isomers of sulfur.
Names and Properties of Often Pulled Oils
Definition of Heavy Oil: Heavy oil is the remaining heavy oil after extraction of gasoline and diesel from crude oil, which is characterized by high molecular weight and high viscosity. The specific gravity of heavy oil is generally 0.82～0.95, and the calorific value is about 10,000～11,000kcal/kg. Its composition is mainly hydrocarbons, in addition to some (about 0.1-4%) of the sulfur and trace inorganic compounds.
No. 200 heavy oil, No. 250 heavy oil, No. 180 fuel oil, No. 120 fuel oil, No. 7 fuel oil, industrial fuel oil, catalytic slurry, wax oil, mixed heavy oil, asphalt, and foreign imports of refining emulsified oil, Auri emulsified oil, No. 180 low-sulfur fuel oil, No. 380 low-sulfur fuel oil, No. 180 high-sulfur fuel oil, M100, M300, etc. (all of the above are Class III hazardous materials).
