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Home/Compounds/Food Additive/Monosodium citrate
C6H7NaO7
214.1 g/mol
Food Additive

Monosodium citrate

CAS18996-35-5EC242-734-6
Category
Food Additive
Compound Class
Organic Acid
Primary Use
Buffering agent and sequestrant for food

Monosodium citrate is the sodium salt of citric acid, commonly used as a buffering agent and sequestrant in food products. It helps maintain acidity levels and binds metal ions to improve food stability and quality.

Used as a buffering agent in foodUsed as a sequestrant in foodPermitted as an inert ingredient in non-food pesticide products

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

Monobasicammonium citrate

CAS4450-94-6

food acidulant and buffering agent

StrongStructure SimilarSimilarity 0.85

Diammonium citrate

CAS3012-65-5

Buffering and chelating agent

StrongStructure SimilarSimilarity 0.85

Disodium citrate

CAS144-33-2

antioxidant and acidity regulator

SimilarStructure SimilarSimilarity 0.75

Ammonium citrate

CAS7632-50-0

food acidity regulator

SimilarStructure SimilarSimilarity 0.75

Citric acid

CAS77-92-9

acidity regulator and preservative

ReferenceSame Category

Ammonium adipate

CAS19090-60-9

Food acidity regulator and leavening agent

ReferenceSame Category

Monopotassium L-glutamate

CAS19473-49-5

Flavor enhancer

ReferenceSame Category

Tert-butylhydroquinone

CAS1948-33-0

antioxidant for fats and oils

Customs Tariff Classification

The international HS code for Monosodium citrate (CAS 18996-35-5) is 2918.15.

HS code (international, 6-digit)

2918.15

EU CN code (8-digit)

2918 15 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 3-carboxy-3,5-dihydroxy-5-oxopentanoate

InChIKey

HWPKGOGLCKPRLZ-UHFFFAOYSA-M

SMILES

C(C(=O)O)C(CC(=O)[O-])(C(=O)O)O.[Na+]

Synonyms (13)
  • Citric acid monosodium salt
  • E 331I
  • Monosodium Citrate Anhydrous
  • Monosodium citrate
  • Sodium citrate monobasic
  • Sodium dihydrogen citrate

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