Acrylic acid

CAS RN: 79-10-7

Toxicity Summary

IDENTIFICATION AND USE: Acrylic acid is a volatile colorless liquid. It is used in the manufacture of plastics, molding powder for signs, construction units, decorative emblems and insignias, polymer solutions for coatings applications, emulsion polymers, paints formulations, leather finishing, and paper coatings; also used in medicine and dentistry for dental plates, artificial teeth, and orthopedic cement. Commercial glacial acrylic acid contains polymer formation inhibitor hydroquinone monomethyl ether (200 ppm). HUMAN STUDIES: Regardless of the route of exposure, acrylic acid is rapidly absorbed and metabolized. Owing to its rapid metabolism and elimination, the half-life of acrylic acid is short (minutes) and therefore it has no potential for bioaccumulation. The substance is corrosive to the eyes, skin and respiratory tract, and also upon ingestion. Inhalation of the substance may cause lung edema. The symptoms of lung edema often do not become manifest until a few hours have passed, and they are aggravated by physical effort. ANIMAL STUDIES: Although a wide range of LD50 values has been reported, most data indicate that acrylic acid is of low to moderate acute toxicity by the oral route and moderate acute toxicity by the inhalation or dermal route. Acrylic acid is corrosive or irritating to skin and eyes, and is a strong irritant to the respiratory tract. Skin sensitization have been reported. Available reproduction studies indicate that acrylic acid is not teratogenic and has no effect on reproduction. Both positive and negative results have been obtained in in vitro genotoxicity tests. No experimental data relevant to the carcinogenicity of acrylic acid were available. ECOTOXICITY STUDIES: The toxicity of acrylic acid to bacteria and soil microorganisms is low. Algae are the most sensitive group of aquatic organisms. Acrylic acid reduces or eliminates bacterial populations in penguins receiving dietary exposure.
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