Methylene dichloride

1, Nature: colorless, transparent volatile liquid, with the irritating smell like ether. About 50 times the dissolved in water, soluble phenol, aldehydes, ketones, glacial acetic acid, phosphate ester, Ethylacetoacetate, cyclohexylamine. Solvents and other chlorinated hydrocarbons and ethanol, ethyl ether and N, N-dimethylformamide immiscibility. Freezing point -95 ℃, the boiling point 40 ℃. The relative density of 1.3348 (15 / 4 ℃), 1.3167 (25 / 4 ℃), 1.3077 (20 / 4 ℃), the melting point -95.1 ℃, spontaneous combustion, 640 ℃, viscosity (20 ℃) 0.43 mPa • s, refractive index 1.4244, Critical temperature 245 ℃, critical pressure 6.171 MPa. After a antipyretic HCl and trace-gas, water and heating long-term, generate formaldehyde and HCl. Further chloride, a CHCl3 and CCl4. 
2. uses: Dissolution of a high and non Ranxing, low boiling point. In addition to the goods for organic synthesis, but also widely used as a cellulose acetate film, the three cellulose acetate spinning, oil dewaxing, aerosols And antibiotics, vitamins, steroid compounds production in the family solvent, and Qiceng metal surface cleaning and degreasing from film. In addition, it used to fumigate grain and low-voltage freezer refrigeration and air-conditioning devices. Polyether-n-urine in the production of foam used as auxiliary blowing agent, as well as for extrusion polysulfone type of foam blowing agents. 
Toxicity and protection: toxic small and relatively rapid recovery after the poisoning, it can be done narcotic drugs. The skin and mucous membrane irritation there. 
Purity: 99.9%