Wei Connaught Chemical, Qingdao glycol manufacturers, polyethylene glycol, ethylene glycol is provided by Wei Connaught Chemical. We are Qingdao Wei Connaught Chemical Co. (www.qdweinuo.com) at: Qingdao, Shandong specialized in: phenol, aniline, ethylene, n-butanol, isobutanol, n-propanol, isopropanol, methanol, ethylene Qingdao Overall Characteristics of alcohol: polymer of ethylene glycol polyethylene glycol (PEG) is a phase-transfer catalyst is also used for cell fusion. Ethylene glycol (ethylene glycol), also known as "glycol." Shandong glycol Appearance: colorless, sweet, viscous liquid. Similar to ethanol, the main energy generating reaction with inorganic or organic ester, generally the first and only one hydroxyl group reacts glycol company, by raising the temperature, increasing the amount of acid, such as ethylene glycol, can have two hydroxyl groups to form esters. When ethylene glycol is used as a refrigerant carrier should be noted: 1. Changes in the concentration of ethylene glycol as the freezing point of the aqueous solution varies less than 60% when the concentration of the aqueous solution of ethylene glycol concentration in the freezing point depression, but After concentration exceeding 60%, with the glycol concentration, its freezing point upward trend, the viscosity will increase as the concentration increases. When the concentration reached 99.9 percent, rising to its freezing point -13.2 ℃, which is concentrated antifreeze (antifreeze liquor) an important reason why can not be directly used, must draw the user's attention. 2 glycol having a hydroxyl group, a long work at 80 degrees -90 degrees Celsius, will first be oxidized to ethylene glycol, glycolic acid, and then oxidized to the acid, i.e., acetic acid (oxalic acid) containing two carboxyl groups. Oxalic acid and its byproducts will first affect the central nervous system, followed by heart polyethylene glycol, and then affect the kidneys. If there is no proper treatment, excessive intake of ethylene glycol can cause death. Glycol oxalic acid, causing corrosion of the equipment that make them leak. Thus, in the preparation of antifreeze, you must also have a preservative to prevent the formation of iron and steel, aluminum, corrosion and scale. 3 glycol itself is relatively active substance readily polymerized ethylene polymers offer further oxidation of the organic acid to polymer (so-called sludge), the formation of a very sticky material, easy to knot after deposition scale; other glycol is reacted with oxygen to produce a small amount of formic acid and acetic acid