Anhydrous sodium sulfite; Disodium sulfite; Disodium sulfite (Na2SO3); Exsiccated sodium sulfite; Natrii sulphis; Natrium sulfurosum; Natriumsulfid [German]; Natriumsulfit [German]; S-WAT; Sodium sulfite; Sodium sulfite (Na2SO3); Sodium sulfite anhydrous; Sodium sulfite, exsiccated; Sodium sulphite; Sulftech; Sulfurous acid, disodium salt; Sulfurous acid, sodium salt (1:2); [ChemIDplus]
White odorless powder; [CAMEO]
Used in developing photographs, bleaching textiles, manufacturing dyes, silvering glass, and preserving meat; Also used as an antiseptic, disinfectant, and water treatment chemical for industrial boilers and oil wells; [HSDB] Used in photography (preservative); [www.ci.tucson.az.us/arthazards/medium.html]
A case of occupational asthma, confirmed by specific inhalation challenge, was reported in a worker whose job was to sprinkle dry metabisulfite on potatoes. [Malo JL, Cartier A, Desjardins A. Occupational asthma caused by dry metabisulphite. Thorax 1995 May;50(5); 585-6.] Similar cases have been reported in the wine, laundry, and lobster fishing industries. [Madsen J, Sherson D, Kjoller H, Hansen I, Rasmussen K. Occupational asthma caused by sodium disulphite in Norwegian lobster fishing. Occup Environ Med 2004;61:873-874] Sulfites are not classifiable as to carcinogenicity to humans. [IARC] See "SULFITES."
LC50 (rat) > 5,500 mg/m3/4h
Occupational diseases associated with exposure to this agent:
Industrial Processes with risk of exposure: