Chemical formula :C6H5N3
CAS logon number :95-14-7
Packing: 20kgs net per kraft paper bag
Benzotriazole is a chemical with high content of benzotriazole and few impurities.
Colorless needle crystal.Slightly soluble in cold water, ethanol, ether.
For anti-rust oil (fat) in the products, many of vapor phase inhibitors used in copper and copper alloy circulating water treatment agent, automobile antifreeze, photographic antifoggant, polymer stabilizers, plant growth regulator, lubricating oil additives, uv absorber, etc.
The product can also be used with a variety of scale inhibitors, sterilization and algicide.
It is obtained by the reaction of phthalamide and sodium nitrite.Adding o-phenylendiamine 50 ℃ dissolve in water, adding glacial acetic acid, cooled to 5 ℃, stir in sodium nitrite reaction.Gradually become dark green of reactants, temperature rise to 70-80 ℃, the solution becomes nacarat, place 2 h at room temperature, cooling, filtering out crystallization, use cold water washing, dry rough, coarse product vacuum distillation, collected 201-204 ℃ (2.0 kPa) fractions, reoccupy benzene recrystallization, available product melting point is 96-97 ℃, the yield is about 80%.It has been reported that sodium nitrite is used to deal with the condensation wastewater of polymyxin and the byproduct benzotriazole.
Toxic acute toxicity oral - rat LD50: 600 mg/kg;Oral - mouse LD50: 615 mg/kg.
Explosives explosion dangerous features 220 ℃;The vacuum distillation can explode.
Flammable dangerous characteristics flammable;Combustion produces toxic nox smoke.
The storage and transportation characteristics are ventilated with low temperature and dry.
Extinguishing agent dry powder, foam, sand, carbon dioxide, fog water.
Sealed in a cool, dry place.Ensure good ventilation in the workplace.Seal preservation.Keep away from the source of fire, and store away from the oxidant.
Lined with plastic bags, packed in wooden drums or in glass bottles.Each bottle is 500g and 20 bottles a wooden case."Avoid light" and "seal" outside the box.Moisture, sun protection, heat insulation, keep dry and well ventilated.
Dangerous goods mark: Xn,Xi,F
Secure note： 26-36/37-61-45-36/37/39-28A
Hazard type code : 20/22-36-52/53-5-36/37/38-20/21/22-11
Dangerous goods transport number.: 2811