H4NaO5P
137.99 g/mol
Food AdditiveWarning
Sodium phosphate monobasic monohydrate
CAS10049-21-5EC600-102-0
Category
Food Additive
Compound Class
Inorganic Salt
Primary Use
Food additive acidulant and sequestrant
Monosodium phosphate (MSP), also known as monobasic sodium phosphate or sodium dihydrogen phosphate, is an inorganic sodium salt of phosphoric acid. It is commonly used as a food additive, functioning as an acidulant and sequestrant.
acidulantsequestrant
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
Lithium dihydrogen phosphate
CAS13453-80-0
Lithium battery electrolyte precursor
StrongSame Parent
Dihydratemonobasicsodium phosphate
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food additive and sequestrant
StrongSame Parent
Monosodium phosphate
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pH buffer and cleaning agent
StrongSame Parent
Monobasic ammonium phosphate
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Fertilizer ingredient
StrongStructure SimilarSimilarity 1.00
Sodium dihydrogen phosphate
CAS89140-32-9
pH buffer and food additive
ReferenceSame Category
L-Histidine hydrochloride
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essential amino acid supplement
ReferenceSame Category
L-Lysine hydrochloride
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Essential amino acid supplement
ReferenceSame Category
Potassium sulfite
CAS10117-38-1
preservative and antioxidant in foods
Safety Reference
Warning
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
Customs Tariff Classification
The international HS code for Sodium phosphate monobasic monohydrate (CAS 10049-21-5) is 2835.22.
HS code (international, 6-digit)
2835.22
EU CN code (8-digit)
2835 22 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
sodium;dihydrogen phosphate;hydrate
InChIKey
BBMHARZCALWXSL-UHFFFAOYSA-M
SMILES
O.OP(=O)(O)[O-].[Na+]
Synonyms (30)
- MSP Monohydrate
- Sodium phosphate monohydrate
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