| Molecular Formula | C6H4ClN2+ |
| Molar Mass | 139.56 |
| Physical and Chemical Properties | Chemical properties gray-white flake crystal, melting point 221.5-222.5 ℃. Soluble in water and ethanol. M-chloroaniline is a colorless to light amber liquid, insoluble in water, soluble in acid, ethanol, and ether. Relative density 1.233 (15/15 ℃), refractive index 1.5931, flash point 123 ℃, melting point -10.4 ℃, boiling point 230.5 ℃,118.5 ℃ (2.8kPa). M-chloroaniline is toxic, can be absorbed by the skin, hemolytic, mice oral LD50 = 880mg/kg. |
| Use | 1. Orange-based GC is mainly used for dyeing and printing of cotton fiber and its fabric, and dyeing red and orange with phenol as, coupling ability is strong, coupling speed is fast. Also used for viscose fiber, silk dyeing. M-chloroaniline is an important intermediate of dyes and pesticides. 2, used as a color developing agent for cotton fiber dyeing and printing, can also be used as an intermediate for dyes and medicines |
| Raw Materials | Sodium carbonate 3-Chloroaniline 3-Nitrochlorobenzene 3-CHLOROANILINE HYDROCHLORIDE 3-Nitrochlorobenzene |
| EPA chemical information | Benzenediazonium, 3-chloro- (17333-84-5) |
production method
P> m-nitrochlorobenzene is used as raw material and iron powder is used as reducing agent to obtain m-chloroaniline, which is refined by distillation, salt formation, filtration and drying to obtain the finished product..reduction: 850L of water, 700kg of iron filings and 70kg of FeSO4 are added into the reduction pot in advance, stirred and heated to 95 ℃, 600kg of m-nitrochlorobenzene is slowly added slowly, and the dripping is completed within 55h, then the temperature is heated to 100-102 ℃ for 2h. Cool to 70-75°C and neutralize with sodium carbonate to pH = 7-7.5.
The reactants are pumped to the distillation kettle for steam distillation until no oil is evaporated. The distillate is left standing, stratified, and separated into water layers. Put the oil layer into a distillation kettle for vacuum distillation (about 86.6kPa vacuum), dehydrate first, and then collect refined products at 180-190 ℃.
salt formation: add 2000L 8% hydrochloric acid into the salt formation pot, raise the temperature to 70 ℃, add 600kg of m-chloroaniline, stir for 2 hours after adding, then add 500kg of 40% hydrochloric acid to precipitate the finished product. Cool to 15-20 ℃, filter, dry at 70-75 ℃, and grind to obtain the finished product. The consumption of m-chloroaniline per ton of orange-colored GC is 0.865t.
category
Explosive substances
explosive hazard characteristics
Explosion in contact with sodium disulfide; react with various disulfide or its derivatives to form sensitive explosion products
flammability hazard characteristics
Thermal decomposition discharges toxic nitrogen oxides and chloride fumes
storage and transportation features
The warehouse is ventilated and dry at low temperature; stored separately from disulfide
fire extinguishing agent
Water, carbon dioxide, foam, dry powder