General Information
Version
6.9
Revision date
2025-08-25
Product name
Sodium hydrosulfite
CAS No.
7775-14-6
1.2.1 Relevant identified uses
Laboratory chemicals, Synthesis of substances
1.2.2. Uses advised against
The product is being supplied under the TSCA R&D Exemption
Emergency telephone
800-424-9300, +1-703- 527-3887
Icons in SDS
Company Information
company name
Sigma-Aldrich Inc
GHS Information
Signal word
Danger
Hazard Codes
Hazard statements (CLP)
H251, H302, H319, H402
Hazard statements
Code
Statements
H251
Self-heating; may catch fire
Section 2
SECTION 2: Hazards identification
2.3 Other hazards
Contact with acids liberates toxic gas.
Signal word
Danger
Hazard statements
H251 Self-heating: may catch fire. H302 Harmful if swallowed. H319 Causes serious eye irritation. H402 Harmful to aquatic life.
Prevention
P235 + P410 Keep cool. Protect from sunlight. P264 Wash skin thoroughly after handling. P270 Do not eat, drink or smoke when using this product. P273 Avoid release to the environment. P280 Wear protective gloves/ eye protection/ face protection.
Response
P301 + P312 + P330 IF SWALLOWED: Call a POISON CENTER/ doctor if you feel unwell. Rinse mouth. P305 + P351 + P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P337 + P313 If eye irritation persists: Get medical advice/ attention.
Storage
P403 + P235 Store in a well-ventilated place. Keep cool. P407 Maintain air gap between stacks/ pallets. P420 Store away from other materials.
Disposal
P501 Dispose of contents/ container to an approved waste disposal plant.
2.1 Classification of the substance or mixture
(29 CFR 1910.1200) Hazards for the product as supplied Self-heating chemicals : Category 1 Acute toxicity (Oral) : Category 4 Eye irritation : Category 2A Short-term (acute) : Category 3 aquatic hazard Other hazards Contact with acids liberates toxic gas.
