C6H8O7
192.12 g/mol
Food AdditiveWarning
Citric acid
CAS77-92-9EC201-069-1
Category
Food Additive
Compound Class
Organic Acid
Primary Use
acidity regulator and preservative
Citric acid is a weak organic acid widely used in the food industry as an acidity regulator and preservative. It occurs naturally in citrus fruits and is also produced commercially for various applications.
acidity regulator in foods and beveragespreservative to inhibit microbial growthanticoagulant in blood transfusion solutions
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
Copper(II) citrate
CAS10402-15-0
Source of copper in agriculture
StrongSame Parent
Ammonium ferric citrate
CAS1185-57-5
pharmaceutical raw material
StrongSame Parent
Piperazine citrate
CAS144-29-6
pharmaceutical raw material
StrongSame Parent
Tetraferric tricitrate decahydrate
CAS2338-05-8
pharmaceutical raw material
SimilarStructure SimilarSimilarity 0.75
Monosodium citrate
CAS18996-35-5
Buffering agent and sequestrant for food
SimilarStructure SimilarSimilarity 0.75
Monobasicammonium citrate
CAS4450-94-6
food acidulant and buffering agent
ReferenceSame Category
Triethyl citrate
CAS77-93-0
emulsifier and plasticizer
ReferenceSame Category
Sodium pyrophosphate
CAS7722-88-5
Detergent builder and food additive
Safety Reference
Warning
H319Causes serious eye irritation
H335May cause respiratory irritation
H315Causes skin irritation
Customs Tariff Classification
The international HS code for Citric acid (CAS 77-92-9) is 2918.14.
HS code (international, 6-digit)
2918.14
EU CN code (8-digit)
2918 14 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
2-hydroxypropane-1,2,3-tricarboxylic acid
InChIKey
KRKNYBCHXYNGOX-UHFFFAOYSA-N
SMILES
C(C(=O)O)C(CC(=O)O)(C(=O)O)O
Synonyms (99)
- E330
- FLC
- Citric Acid, anhydrous, USP
- Citric acid bp
- Citric acid, United States Pharmacopeia (USP)
- Citric acid, anhydrous, European Pharmacopoeia (EP)
- Citric acid, meets USP testing specifications, anhydrous
- Citric acid, meets analytical specification of Ph. Eur., BP, USP, E330, anhydrous, 99.5-100.5% (based on anhydrous substance)
- 1i2s
- 1o4l
- 1rq2
- 1y4a
- 2-Hydroxytricarballylic acid
- 2bo4
- 2c4v
- 2fw6
- 2fwp
- 4aci
- 4nrm
- 4o61
- 4to8
- ACD Solution Modified
- AE-562/40806920
- ANHYDROUS CITRIC ACID [MART.]
- Acidum citricum
- Aciletten
- Anhydrous citrate
- Anhydrous citric acid
- Anhydrous citric acid (JP18)
- BETZ 6251
- Bio-Active
- Caswell No. 221C
- Chemfill
- Citraclean
- Citraclean (Salt/Mix)
- Citretten
- Citric Buffered Normal Saline
- Citric acid (8CI)
- Citric acid (anhydrous) CRS
- Citric acid monoglyceride
- Citric acid, LR, anhydrous
- Citric acid, SAJ first grade
- Citric acid, anhydrous
- Citric acid, p.a.
- Citric acid,hydrous
- Citricum acidum
- Citro
- Citronensaeure
- FEMA No. 2306
- FEMA Number 2306
- H3cit
- Hydrocerol A
- INS NO.330
- K-Lyte
- K-Lyte (Salt/Mix)
- K-Lyte DS
- K-Lyte DS (Salt/Mix)
- K-Lyte/Cl (Salt/Mix)
- Kyselina citronova
- Kyselina citronova [Czech]
- Pharmakon1600-01300013
- Pleo Citro
- Suby G
- Ubiquitin
- Uro-trainer
- Urologic G
- beta-Hydroxytricarballylate
- citr
- citric acid
Sourcing Citric acid?
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