Ethylene glycol is a chemical substance. The following is an introduction to the properties, uses, preparation and safety information of ethylene glycol:
Nature:
Physical properties: It is a colorless, viscous and sweet liquid that is almost tasteless at room temperature.
Chemical properties: It is a hydrophilic substance that can be mixed with water and other organic solvents. It can be oxidized to a range of compounds such as aldehydes, acids and esters.
Colorless transparent slightly viscous liquid. Slightly sweet. Easy to absorb moisture. It can be miscible with water, glycerin, acetone, acetic acid, aldehydes, pyridine, ethanol, slightly soluble in ether, insoluble in benzene, petroleum ether, oil. Melting point in contact with open flame, high heat or oxidant, there is a risk of combustion and explosion. In case of high heat, the pressure inside the container increases, and there is a risk of cracking and explosion.
Purpose:
Industrial use: Used in the manufacture of polyester fiber, polyether and other synthetic polymers, can also be used as coolant and solvent. Ethylene glycol can also be used in the manufacture of pigments, pigment solvents, and dyes.
Metallurgical use: used as extractant for chromium, aluminum, zinc, copper and other metals.
Reagent for gas chromatography analysis. Used for determination of calcium oxide in water, used as capacitive medium, solvent and antifreeze agent. Used in the manufacture of resins, plasticizers, synthetic fibers, cosmetics and explosives.
Preparation:
Ethylene glycol is usually prepared by the hydration reaction of ethylene. Ethylene reacts with water under high pressure and temperature to form ethylene glycol.