Glycolic acid is the simplest hydroxy acid. Glycolic acid is widely present in nature. For example, sugar cane, sugar beet and immature grape juice contain a small amount of glycolic acid, but its content is low, and it coexists with other organic acids, which is difficult to separate and recover. Synthetic production is used in the industry. Glycolic acid is a colorless crystal, slightly hygroscopic. Melting point 78-79°C. It is soluble in water, methanol, ethanol, acetone, ethyl acetate, ethyl acetate and ether, but almost insoluble in carbon oxide solvents. Low corrosiveness, non-flammable, odorless, low toxicity, strong biodegradability, high water solubility, it is almost non-volatile organic compound.
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