Sodium bisulfite

Agent Name
Sodium bisulfite
CAS Number
7631-90-5
Formula
H-O3-S.Na
Major Category
Other Classes
Sodium bisulfite formula graphical representation
Synonyms
Bisulfite de sodium [French]; Fr-62; Hydrogen sodium sulfite; Hydrogen sulfite sodium; Monosodium sulfite; Sodium acid sulfite; Sodium bisulfite (1:1); Sodium bisulfite (NaHSO3); Sodium bisulphite; Sodium hydrogen sulfite; Sodium hydrosulfite(DOT); Sodium metabisulfite; Sodium sulfite (NaHSO3); Sodium sulhydrate; Sulfurous acid, monosodium salt; Uantax SBS; [ChemIDplus] UN2693
Category
Sulfites
Description
White crystals or powder with a slight odor of sulfur dioxide; [NIOSH]
Sources/Uses
Used as a food preservative; a disinfectant and bleach for textiles, brewing casks, dye vats, and paper making; and an additive for copper and brass plating; [HSDB] Used in photography (fixing bath); [www.ci.tucson.az.us/arthazards/medium.html]
Comments
A case of occupational asthma, confirmed by specific inhalation challenge, was reported in which a worker sprinkled 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] "Powder is irritating to eyes, nose, and throat and can irritate skin." [CAMEO] See "SULFITES."
Biomedical References

Exposure Assessment

Skin Designation (ACGIH)
Insufficient data
TLV (ACGIH)
5 mg/m3

Adverse Effects

Asthma
Yes
IARC Carcinogen
Not classifiable
ACGIH Carcinogen
Not Classifiable

Diseases, Processes, and Activities Linked to This Agent

Diseases

Occupational diseases associated with exposure to this agent: