K2O3S
158.26 g/mol
Food AdditiveWarning
POTASSIUM SULFITE
CAS10117-38-1EC233-321-1
Category
Food Additive
Compound Class
Inorganic Salt
Primary Use
preservative and antioxidant in foods
Potassium sulfite is an inorganic salt composed of potassium and sulfite ions, appearing as a white solid highly soluble in water. It is commonly used as a preservative and antioxidant in food products.
food preservativeantioxidant in foods
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.
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Related Compounds
StrongSame Parent
Sodium sulfite
CAS7757-83-7
antioxidant and preservative
ReferenceSame Category
DL-α-tocopherol
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antioxidant and vitamin E supplement
ReferenceSame Category
Hexonic acid--ammonia (1/1)
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food additive
ReferenceSame Category
Calcium aspartate
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mineral supplement
ReferenceSame Category
Hydroxytyrosol
CAS10597-60-1
antioxidant food additive
Referencestereoisomer of
Ammonium bisulfite
CAS10192-30-0
Chemical reagent
Referencestereoisomer of
Sodium hydrogen sulfite
CAS7631-90-5
Food preservative and disinfectant
Referencestereoisomer of
Potassium hydrogen sulfite
CAS7773-03-7
Food preservative and antimicrobial agent
Safety Reference
Warning
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
H302Harmful if swallowed
H318Causes serious eye damage
Customs Tariff Classification
The international HS code for POTASSIUM SULFITE (CAS 10117-38-1) 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
dipotassium;sulfite
InChIKey
BHZRJJOHZFYXTO-UHFFFAOYSA-L
SMILES
[O-]S(=O)[O-].[K+].[K+]
Synonyms (12)
- E-225
- DIPOTASSIUM SULPHITE
- Dipotassium sulfite
- INS NO.225
- Kaliumsulfit
- POTASSIUM SULFITE
- Potassium sulfite (K2SO3)
- Potassium sulfite(IV)
- Potassium sulphite
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