Agent Name

Sodium bisulfite

CAS Number

7631-90-5

Formula

H-O3-S.Na

Major Category

Other Classes

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."

Reference Link

Occupational asthma caused by dry metabisulphite

Exposure Assessment
Skin Designation (ACGIH)

Insufficient data

TLV (ACGIH)

5 mg/m3

Adverse Effects
Asthma

Yes

IARC Carcinogen

Not Classifiable

ACGIH Carcinogen

Not Classifiable

Links to Other NLM Databases
Health Studies

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Diseases

Occupational diseases associated with exposure to this agent:

Processes

Industrial Processes with risk of exposure: