General Information
Version
10
Revision date
2025-12-18
Product name
Sodium hydrosulfite
Product Synonyms
Sodium dithionite
CAS No.
7775-14-6
Manufacturer Name
Fisher Scientific
Emergency telephone
1-800-234-7437, 800-424-9300, 001-703-527-3887
Icons in SDS
Company Information
company name
Fisher Scientific Company
GHS Information
Signal word
Danger
Hazard Codes
Hazard statements (CLP)
H251, H302, H319
Hazard statements
Code
Statements
H251
Self-heating; may catch fire
Section 2
SECTION 2: Hazards identification
WHMIS 2015 Classification
Signal word
Danger
Hazard statements
Self-heating; may catch fire Harmful if swallowed Causes serious eye irritation Contact with acids liberates toxic gas
Prevention
Take any precaution to avoid mixing with acids Do not breathe dust/fumes/gas/mist/vapours/spray Wear respiratory protection Keep cool. Protect from sunlight Wash face, hands and any exposed skin thoroughly after handling Do not eat, drink or smoke when using this product Wear protective gloves/protective clothing/eye protection/face protection
Response
IF INHALED: Remove person to fresh air and keep comfortable for breathing Immediately call a POISON CENTER/doctor IF SWALLOWED: Call a POISON CENTER/doctor if you feel unwell IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing Rinse mouth
Storage
Maintain air gap between stacks or pallets Do not expose to temperatures exceeding 50 °C/122 °F Store separately
Disposal
Dispose of contents/container to an approved waste disposal plant
2.1 Classification of the substance or mixture
WHMIS 2015 Classification This product is hazardous in accordance with the Canada Hazardous Products Act (HPA) and Hazardous Products Regulation (HPR), as amended (SOR/2022-272) Self-heating substances and mixtures Category 1 Acute oral toxicity Category 4 Serious Eye Damage/Eye Irritation Category 2 Health Hazards Not Otherwise Classified Category 1 Contact with acids liberates toxic gas
