C4H6O6
150.09 g/mol
Food AdditiveDanger
L-tartaric acid
CAS87-69-4EC201-766-0
Category
Food Additive
Compound Class
Organic Acid
Primary Use
Food additive and acidulant
L-tartaric acid is a naturally occurring organic acid widely used as a food additive and acidulant. It acts as a synergist for antioxidants, an emulsifier, a sequestrant, and a flavoring agent, and also finds applications in electroplating, painting, leather tanning, and photographic processing.
Food additive and acidulantSynergist for antioxidantsEmulsifier and sequestrant
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
Ammonium bitartrate
CAS3095-65-6
food acidity regulator
ReferenceSame Category
Β-D-arabinopyranose
CAS87-72-9
flavoring agent and nutrient
ReferenceSame Category
Mannitol
CAS87-78-5
anti-caking and free flowing agent
ReferenceSame Category
Keto-L-sorbose
CAS87-79-6
sweetener and vitamin C precursor
ReferenceSame Category
Myo-inositol
CAS87-89-8
nutritional supplement and food additive
Referencestereoisomer of
DL-TARTARIC-2,3-D2 ACID
CAS91469-46-4
research compound
Referencestereoisomer of
Racemic acid
CAS133-37-9
Acidity regulator and synergist for antioxidants
Referencestereoisomer of
D-tartaric acid
CAS147-71-7
Synergist for antioxidants and flavoring agent
Safety Reference
Danger
H302Harmful if swallowed
H315Causes skin irritation
H317May cause an allergic skin reaction
H318Causes serious eye damage
H319Causes serious eye irritation
H335May cause respiratory irritation
Customs Tariff Classification
The international HS code for L-tartaric acid (CAS 87-69-4) is 2918.12.
HS code (international, 6-digit)
2918.12
EU CN code (8-digit)
2918 12 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
(2R,3R)-2,3-dihydroxybutanedioic acid
InChIKey
FEWJPZIEWOKRBE-JCYAYHJZSA-N
SMILES
[C@@H]([C@H](C(=O)O)O)(C(=O)O)O
Synonyms (81)
- E-334
- Tartaric acid, United States Pharmacopeia (USP)
- (+)-tartarate
- (2R,3R)-2,3-tartaric acid
- (2R,3R)-Tartarate
- (2R,3R)-Tartaric acid
- (2RS,3RS)-Tartaric acid
- (R,R)-Tartaric acid
- (R,R)-tartrate
- (r,r)-tartarate
- 1d5r
- 2,3-Dihydroxysuccinic Acid
- 2,3-dihydroxy-succinate
- 4ebt
- Acidum tartaricum
- BAROS COMPONENT TARTARIC ACID
- D(-)-TARTARIC ACID
- DL TARTARIC ACID
- DL-Tartaric acid (Standard)
- Dextrotartaric acid
- INS NO.334
- Kyselina vinna
- Kyselina vinna [Czech]
- L-(+)-Tartaric acid, ACS
- L-(+)-Tartaric acid, BioXtra
- L-(+)-Tartaric acid, natural
- L-(+)-Tartaric acid, p.a.
- L-2,3-DIHYDROXYSUCCINIC ACID
- L-Tartaric acid (Standard)
- L-Threaric aci
- L-tartarate
- L-tartaric acid
- L-threaric acid
- Lamb protein (fungal)
- Natural tartaric acid
- Paratartaric acid
- Rechtsweinsaeure
- Resolvable tartaric acid
- Succinic acid, 2,3-dihydroxy
- TARTARIC ACID [MART.]
- TARTARICUM ACIDUM
- Tartaric acid (JP18/NF)
- Tartaric acid (VAN)
- Tartaric acid D,L
- Tartaric acid, L-
- Threaric acid
- Weinsaeure
- Weinsaure
- Weinsteinsaeure
- d-a,b-Dihydroxysuccinic acid
- tartaric acid
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