Zinc hydrosulfite
Agent Name
Zinc hydrosulfite
CAS Number
7779-86-4
Formula
H2-O4-S2.Zn
Major Category
Metals
Synonyms
DITHIONOUS ACID, ZINC SALT (1:1); ZINCATE(4-), TETRAKIS(MONOTHIOSULFATO(2-))DI-; ZINC DITHIONITE; [HSDB]
Category
Hydrosulfites
Description
White powder; [CAMEO]
Sources/Uses
Used to bleach wood pulp, textiles, and other natural materials; [CAMEO]
Comments
Reacts with water to form hydrogen sulfide and sulfur dioxide; [ERG 2016] An irritant to the skin, eyes, and respiratory tract; Reacts with water to form sulfur dioxide; [CAMEO] See "Zinc."
Biomedical References
Exposure Assessment
TIH
Yes
Dangerous When Wet
Yes
MAK
0.1 mg/m3 (respirable fraction), 2 mg/m3 (inhalable fraction) for Zn inorg. cmpnds
Explanatory Notes
Not TIH in land-based spills, but TiH substance released when spilled in water; [ERG 2016]
Adverse Effects
Toxic Pneumonitis
Yes
Other Poison
Chemical Asphyxiant
Diseases, Processes, and Activities Linked to This Agent
Diseases
Occupational diseases associated with exposure to this agent:
Processes
Industrial Processes with risk of exposure: