1. Simple structure: HO-CH2-CH2-OH Formula: C2H6O2 Molecular Weight: 62.07 (according to 1997 international atomic mass) 2, Type: ethylene glycol at room temperature is a colorless, odorless, sweet viscous liquid. 1.1132 share of industrial glycol colorless, boiling point 197.2 ℃, freezing point -12.6 ℃, flash point 116 ℃, ignition point 412 ℃ industrial glycol explosion limit upper limit of 3.2% ~ 15.3% (volume). Hygroscopic, miscible with water, ethanol and acetone, can greatly reduce the freezing point of water, slightly soluble in ether. 3, production methods: ethylene oxide from ethylene oxide in the silver catalyzed hydration of ethylene oxide and then the ethylene glycol distillation system. 4, use: main 5, the implementation of standards: GB 4649-93 Index Name Index Excellent grade First grade Qualified Appearance colorless transparent colorless transparent without mechanical impurities without mechanical impurities colorless or slightly yellow without mechanical impurities platinum - cobalt color Degree: Industrial glycol filling before heating, after heating No. ≤ hydrochloride, number ≤ 5 20 15 - 40 - Density (20 ℃), g / cm31.1128 ~ 1.1138 1.1125 ~ 1.1140 1.1120 ~ 1.1150 boiling range (0 ℃ , 0.10133MPa) initial boiling point, ℃ ≥ dry point, ℃ ≤ 196 Alias: glycol, ethylene glycol, EG English name: Ethylene glycol CAS: 107-21-1 EINECS: 203-473- 3 Molecular formula: C2H6O2 Properties: colorless transparent viscous liquid, sweet, hygroscopic. Boiling point 198 ℃, freezing point -11.5 ℃, the relative density of 1.1088, a refractive index of 1.4318, a flash point of 116 ℃, with water, lower aliphatic alcohols, glycerol, acetic acid, acetone and the like, ketones, aldehydes, pyridine and the like coal tar base Class miscible industry glycol tankers / bulk water, slightly soluble in ether, almost insoluble in benzene and its homologues Scope: 1, mainly used as raw material for polyester fiber polyester. 2, used as a solvent varnish, dyes, oils and certain inorganic compounds. 3, for the manufacture of a polyester resin, a plasticizer, a surface agent, cold oil, antifreeze and the like. Industrial glycol colorless _ square awaken Feng Chemical (certified) _ Lanzhou Polytechnic glycol provided by the Guangzhou City Jing Feng Trading Co. Guangzhou City Jing Feng Trading Co., Ltd. (www.wanjingfeng.com.cn) (www.fangzhizhuji.com) is Guangzhou, chemical products leader, over the years, the company implement 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.