Industrial grade glycerin diluted with 1/2 volume amount of distilled water, after stirring sufficiently, the activated carbon was added and heated to 60 ~ 70 ℃ decolorization treatment Antifreeze Glycerine, then vacuum filtered, the filtrate was clear and transparent guaranteed. Control dropping the filtrate was added to a good deal in the prior 732 and 717 strong acid cation resin mixed alkali cation and anion resin column to adsorb and remove the glycerol electrolyte aldehydes, pigments, esters and other non-electrolyte impurities. After removal of the glycerol solution impurities were distilled under reduced pressure, to control the degree of vacuum 93326Pa above, pot temperature at 106 ~ 108 ℃, most of the water was distilled off, and then the pot temperature rose to 120 ℃ rapid dehydration, heating was stopped when no water, the resulting the autoclave is refined glycerin, also known as glycerol, Appearance colorless transparent viscous liquid, odorless, tasteless, hygroscopic, Paul lubrication, softening the boiling point of 160 degrees industrial glycerin, significantly absorb moisture from the air, neutral aqueous solution can be mixed with water, ethanol, methanol, in any proportion. Density ≥1.260, boiling point ≥120 ℃, freezing point below -26 ℃ industrial glycerine factory outlets, with good frost resistance. Ingredients: Glycerin CAS: 56-81-5 [1] Appearance: colorless odorless viscous liquid with a sweet warm can absorb moisture. Melting point (℃): 20 Boiling point (℃): 290.9 Relative density (water = 1): 1.26331 (20 ℃) ??Relative vapor density (air = 1): 3.1 Viscosity (20 ℃):. 1412mPa (25 ℃): 945mPa. s surface tension (20 ℃): 63.3 mN / m saturated vapor pressure (kPa): 0.4 (20 ℃) ??Flash point (℃): 177 ignition temperature (℃): 370 volume expansion coefficient /K-1:0.000615 solubility : soluble in ethanol, miscible with water, not soluble in chloroform, ether, carbon disulfide industrial glycerin, benzene, oils. Some soluble inorganic. Health hazards: toxic for human consumption. Eyes, skin irritation did. Mice oral toxicity LD50 = 31,500mg / kg intravenous LD50 = 7,560mg / kg Explosion Hazards: This product is flammable, irritating. Hazardous characteristics: case of fire, combustible high fever. Boiling point of 160 degrees industrial glycerin, Wan Jing Feng Chemical (certified), Jieyang City Industrial glycerin provided by the Guangzhou City Jing Feng Trading Co., Ltd .. Guangzhou Wan Jing Feng Trading Co. (www.wanjingfeng.com.cn) (www.fangzhizhuji.com) is Guangzhou, chemical products leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Wan Jing Feng Chemical leadership with the staff warmly welcome all inquiries negotiations to create Wan Jing Feng Chemical better future. You can also access (www.fangzhizhuji.com/supply_details_47702380.html), for more information about the company.