HKO3S
120.17 g/mol
Food AdditiveWarning
POTASSIUM BISULFITE
CAS7773-03-7EC231-870-1
Category
Food Additive
Compound Class
Inorganic Salt
Primary Use
Food preservative and antimicrobial agent
Potassium bisulfite is a salt used as a food preservative and antimicrobial agent, primarily to prevent spoilage in foods other than meats and sources of vitamin B1. It also serves as a reducing agent and a source of sulfurous acid in various industrial processes.
Food preservativeReducing agent for organic compoundsSource of sulfurous acid in brewing
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
Sourcing POTASSIUM BISULFITE?
Post a free purchase request — no account needed. It reaches suppliers of this product, and replies go straight to your inbox.
Related Compounds
StrongSame Parent
Ammonium bisulfite
CAS10192-30-0
Chemical reagent
StrongSame Parent
Sodium hydrogen sulfite
CAS7631-90-5
Food preservative and disinfectant
ApplicationSame Use
Sodium diacetate
CAS126-96-5
Food preservative and antimicrobial agent
ReferenceSame Category
Keto-L-fructose
CAS7776-48-9
reducing hexose sweetener
ReferenceSame Category
Monobasic potassium phosphate
CAS7778-77-0
buffer and sequestrant
ReferenceSame Category
Heptahydratedibasicsodium phosphate
CAS7782-85-6
food sequestrant emulsifier and buffer
ReferenceSame Category
Aluminium phosphate
CAS7784-30-7
leavening agent in baking powders
Referencestereoisomer of
Potassium sulfite
CAS10117-38-1
preservative and antioxidant in foods
Safety Reference
Warning
H319Causes serious eye irritation
H335May cause respiratory irritation
Regulatory Compliance1
- CN Catalogue of Hazardous ChemicalsCNRegulation
Customs Tariff Classification
The international HS code for POTASSIUM BISULFITE (CAS 7773-03-7) is 2832.20.
HS code (international, 6-digit)
2832.20
EU CN code (8-digit)
2832 20 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
potassium hydrogen sulfite
InChIKey
DJEHXEMURTVAOE-UHFFFAOYSA-M
SMILES
OS(=O)[O-].[K+]
Synonyms (17)
- E-228
- INS NO.228
- Kaliumbisulfit
- Monopotassium sulfite
- POTASSIUM BISULFITE
- POTASSIUM BISULFITE (II)
- POTASSIUM BISULFITE SOLUTION
- POTASSIUM BISULFITE [MART.]
- POTASSIUM BISULPHITE
- POTASSIUM BISULPHITE SOLUTION
- Potassium acid sulfite
- Potassium hydrogen sulfite
- Potassium hydrogen sulphite
- Potassium sulfite (KHSO3)
- Potassium sulfite, hydrogen
- Sulfite, potassium metabi-
Sourcing POTASSIUM BISULFITE?
Post a free purchase request — no account needed. It reaches suppliers of this product, and replies go straight to your inbox.