Colorless viscous liquid. Sweet, hygroscopic, combustible. Melting point of 17.8 ℃ (18.17 ℃, 20 ℃). Boiling point 290 ℃ (decomposition), 263.0 ℃ (53.2kPa), 240.0 ℃ (26.6kPa) 167.2 ℃ (1.33kPa) 153.8 ℃ (0.665kPa), 125.5 ℃ (0.133kPa), flash point (open cup) 177 ℃, relative Density 1.26362 (20/20 ℃), ignition point 392.8 ℃, refractive index 1.4746, viscosity (20 ℃) ??1499mPa · s, vapor pressure (100 ℃) 26Pa, surface tension (20 ℃) ??63.4mN / m. Glycerin is miscible with water and ethanol, aqueous solution is neutral. 1 part of glycerol can be dissolved in 500 parts or 11 parts of ethyl acetate in diethyl ether. Not soluble in benzene, chloroform, carbon tetrachloride, carbon disulfide, petroleum ether, oils. Absorb moisture from the air, but also absorb hydrogen sulfide, hydrogen cyanide and sulfur dioxide. Odorless. 0 ℃ pure glycerin placed outside the low temperature, can form a melting point of 17.8 ℃ sheen has orthorhombic crystal containing a small amount of water that hinder crystallization. Freezing point different concentrations (by weight) aqueous glycerol solution is: 10, -1.6 ℃; 30, -9.5 ℃; 50,23.0 ℃; 66.7, -46.5 ℃; 80, -20.3 ℃; 90, -1.6 ℃. In nature, glycerol mainly in the form of glycerides widespread in plants and animals. Glycerin, 1779 by Adams Chelles (Scheel) first discovered in 1823 it was recognized that contains fat ingredients Chevreul, Greek meaning for sweet, so named for the glycerol (Glycerine). During World War I, because of its raw materials for the manufacture of gunpowder, the yield increase. Chemical reactions: 1, with a monohydric alcohol like glycerol, e.g., reaction with metallic sodium, sodium glycerol generated monohydric alcohol. 2, dry hydrogen chloride gas reaction, generating two industrial glycerin direct selling, 3-hydroxy-1-chloropropane and 1,3-dihydroxy-2-chloro-propane. 3, in the ether solution with hydrogen chloride to yield primarily 2-hydroxy-1,3-dichloropropane. 4, generates glyceraldehyde, glycerol acid oxidation; generating glycol restore. (Traits and stability) of a colorless viscous liquid; slightly sweet flavor, mixed with water and ethanol can be any proportion, in the humid air can absorb moisture industrial glycerin, cold too long can precipitate crystalline blocks can be a little warm reconstitution, it should be sealed storage. 5, glycerol at about 10 ℃, mixed with sulfuric acid, nitric acid reacts glycerol trinitrate industrial glycerin antifreeze special, commonly known as nitroglycerin industrial glycerin affordable, this compound was a minor collision that is broken down into large amounts of gas, water vapor and carbon dioxide explosion occurred. 6, glycerol and hydrogen peroxide, peracetic acid, ferrous salts, dilute nitric acid and other reactions to produce glyceraldehyde, dihydroxyacetone; generating glycerate with concentrated nitric acid. Glycerol can also be lead tetraacetate or periodic acid oxidation. 7, glycerin was heated with concentrated sulfuric acid or potassium intramolecular dehydration, acrolein. 8, glycerin is a byproduct of the soap industry, can also be obtained by special yeast fermentation of molasses. Can also be synthesized from propylene glycerol. Square Jing Feng Chemical (Figure), industrial glycerol stock Guangzhou, Zhanjiang industrial glycerin provided by the Guangzhou City Jing Feng Trading Co., Ltd .. Guangzhou City Jing Feng Trading Co. (www.wanjingfeng.com.cn) (www.fangzhizhuji.com) located in Tianhe District, Guangzhou, Guangdong, China Chemical City Dongpu No. 8, Block A. Scraps and development in the wave of market economy, the current square Jing Feng Chemical has a high reputation in the chemical products enjoy a good reputation. Wan Jing Feng Chemical made the whole network business alliance certification, marking our service and management level has reached a new height. Wan Jing Feng Chemical staff willing to work with all people of insight and common development, for a better future. You can also access (www.fangzhizhuji.com/supply_details_45724700.html), for more information about the company.