Sodium Hydrosulfite

CAS#: 7775-14-6

Synonyms: Sodium dithionite

Uses: Vat dyeing of fibers and textiles; stripping agent for dyes; reagent; bleaching of sugar, soap, oils, and groundwood; oxygen scavenger for synthetic rubbers; water-treatment; gas purification;

Hazard:  Decomposes to produce potentially deadly sulfur dioxide. Could cause severe allergies in asthmatics and people sensitive to sulfite compounds.  Respiratory tract irritation and possible asphyxia, symptoms of allergy including hives, difficulty breathing, and constricted airway. Anaphalactic shock in severe cases. Eye or skin irritation from exposure to dust and solutions.  Severe diarrhea if large amounts are ingested.