Acetonitrile

1，Nature: colorless, transparent liquid, similar to the ether Yixiang. Melting point -45.7 ℃, the boiling point 81.6 ℃, the relative density of 0.786 (20 / 4 ℃), refractive index of 1.3441, flash point 6 ℃, 20 ℃ when the viscosity of 0.35 mPa • s, the critical temperature of 274.7 ℃, critical pressure 4.8332 MPa. Toxic, flammable, burning a bright flame. With water, methanol, methyl acetate, acetone, ethyl ether, chloroform, carbon tetrachloride and trichloroethylene immiscibility. And the water formed azeotrope with 84% acetonitrile, a total of boiling point 76 ℃.

2，Preparation: acetonitrile many production methods, which are the main industrial production of acetic acid ammoniation, acetylene ammoniation of ammonia and propylene oxide, vice-law. 1. Ammoniation of acetic acid to acetic acid, ammonia as raw materials, aluminium oxide catalyst, in the 360-420 ℃ temperature, the reaction step of acetonitrile, the reaction of the water distillation and that is a finished product . Fixed consumption of raw materials: acetic acid (98%) 1763 kg / t, liquid ammonia (99.5%) 691 kg / t. 2. Acetylene ammoniation law to acetylene, ammonia as raw materials and aluminium oxide catalyst, in the 500-600 ℃ temperature, the step response of acetonitrile. Fixed consumption of raw materials: acetylene 10231 m3, liquid ammonia (99.4%) 1007 kg / t. 3. Propylene oxide by-product of ammonia to propylene, ammonia and air as raw materials, through the catalyst of acrylonitrile at the same time Vice-acetonitrile. PAN-product per ton to 25-100 kg acetonitrile. 4. Acetamide from dehydration and P2O5 arrived. 5. By dimethyl sulfate and sodium cyanide derived from the role.

3，Use: acetonitrile main purpose is as solvent. If as a solvent extraction of butadiene, a synthetic solvents and some special paint solvents. In the oil industry for removing hydrocarbons from the oil tar, phenol and other substances solvent. In the oil industry in the vegetable oil used to extract fatty acids follower of solvents, used in traditional Chinese medicine on the steroid family of drugs to the crystallization of reaction medium. In need of high dielectric constant polar solvents, water and acetonitrile often use a dual azeotropic mixture: 84 percent of acetonitrile, the boiling point of 76 ℃. Acetonitrile is Chinese Medicine (vitamin B1), the intermediate spices, is to create both the triazine synergist nitrogen fertilizer raw materials. Also for the degeneration of alcohol. In addition, it can be used for synthesis of triethylamine, such as acetic acid and fabric dyeing, lighting industry has many uses.
4，Purity: 99.9%
5，Packaging: 150 KG /packing