Note: Ingredients listed on restricted chemical lists
General Information
Version
6
Revision date
2026-07-20
Product name
Potassium nitrite
Product Synonyms
Nitrous acid, potassium salt
CAS No.
7758-09-0
supplier name
Fisher Scientific UK
Emergency telephone
001-800-227-6701, +32 14 57 52 11, 001-201-796-7100, +32 14 57 52 99, 001-800-424-9300, 001-703-527-3887
Icons in SDS
Company Information
company name
Fisher Scientific UK
e-mail address of the competent person responsible for the Safety Data Sheet
begel.sdsdesk@thermofisher.com
GHS Information
Signal word
Danger
Hazard Codes
Hazard statements (CLP)
H272, H301, H400
Hazard statements
Code
Statements
H272
May intensify fire; oxidiser
Section 2
SECTION 2: Hazards identification
Physical State
Appearance/Odor
Solid Off-white Odorless Emergency Overview May intensify fire; oxidizer. Toxic if swallowed. Very toxic to aquatic life. Hygroscopic. May form combustible dust concentrations in air. Classification of the substance or mixture Oxidizing solids Category 2 Acute Oral Toxicity Category 3 Acute aquatic toxicity Category 1 Label Elements
Signal word
Danger Hazard Statements H272 - May intensify fire; oxidizer H301 - Toxic if swallowed H400 - Very toxic to aquatic life
Prevention
P201 - Obtain special instructions before use P202 - Do not handle until all safety precautions have been read and understood P210 - Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking P220 - Keep away from clothing and other combustible materials P221 - Take any precaution to avoid mixing with combustibles P264 - Wash face, hands and any exposed skin thoroughly after handling P270 - Do not eat, drink or smoke when using this product P280 - Wear protective gloves/protective clothing/eye protection/face protection
Response
P301 + P310 - IF SWALLOWED: Immediately call a POISON CENTER or doctor P308 + P313 - IF exposed or concerned: Get medical advice/attention P330 - Rinse mouth P370 + P378 - In case of fire: Use dry sand, dry chemical or alcohol-resistant foam to extinguish
Storage
P403 + P233 - Store in a well-ventilated place. Keep container tightly closed P405 - Store locked up
Disposal
P501 - Dispose of contents/ container to an approved waste disposal plant
Other physicochemical hazards
Oxidizing. Contact with combustible material may cause fire. Hygroscopic. May form combustible dust concentrations in air.
Health hazards
Toxic if swallowed.
Environmental hazards
Very toxic to aquatic life. Will likely be mobile in the environment due to its water solubility. The product is water soluble, and may spread in water systems. May form explosible dust-air mixture if dispersed. Toxic to terrestrial vertebrates. This product does not contain any known or suspected endocrine disruptors.
2.1 Classification of the substance or mixture
Oxidizing solids Category 2 Acute Oral Toxicity Category 3 Acute aquatic toxicity
