PRODUCT IDENTIFICATION

H.S. CODE

TOXICITY

CLASSIFICATION

PHYSICAL AND CHEMICAL PROPERTIES

MELTING POINT

SOLUBILITY IN WATER

REFRACTIVE INDEX

GENERAL DESCRIPTION & APPLICATIONS

Thioglycolic acid, a simple sulfur group- chained carboxylic acid, is a clear liquid; melts at -16. c, boils at 96 C; soluble in water. It is an useful chemical intermediate in the chemical reactions such as addition, elimination and cyclization. Sulfur group will react with bases, acids, ketones and organic halogen compounds, whereas the carboxylic group will preferentially react In the presence of alcohols or amines. The applications of thioglycolic acid and its derivatives are wide in the fields of PVC stabilizers, down-hole acidizing, corrosion inhibition in the oil field industry, manufacturing of pharmaceuticals, agrochemicals and dyes, shrink-resistant treatment of wool, fabric dying, leather processing.

Thioglycolates are used in cosmetic hair-care products especially permanent waving products as they weaken the keratin structure by the opening of the cystine disulfide linkages. In addition to hair-waving application, they are used as depilating agents to remove unwanted body hair. The break-down of disulfide bonds in the cortex by thioglycolates either rearranges (permanent waving) or entirely destroys (depilating) hair structure. As an antioxidant application in cosmetics, thioglycolates protect the product itself not the skin against oxidative reactions promoted by ultraviolet radiation or oxygen.

APPEARANCE

ASSAY

80.0 ± 2.0%

FREE ACID

2.0% max

COLOR, APHA

25 max