C7H5ClO2
156.56 g/mol
Industrial ChemicalWarning
2-Chlorobenzoic acid
CAS118-91-2EC204-285-4
Category
Industrial Chemical
Compound Class
Organic Acid
Primary Use
intermediate for dyes and pharmaceuticals
2-Chlorobenzoic acid is an organic compound that serves as a precursor in the production of various drugs, food additives, and dyes. It is one of the three isomeric chlorobenzoic acids and is noted for being the strongest acid among them.
intermediate for dyesintermediate for pharmaceuticalsprecursor for food additives
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
ApplicationSame Use
M-nitrobenzoyl chloride
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intermediate for dyes and pharmaceuticals
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2-aminobenzonitrile
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intermediate for dyes and pharmaceuticals
ReferenceSame Category
Anthranilic acid
CAS118-92-3
intermediate for dyes and drugs
ReferenceSame Category
2,6-Dichloro-4-fluorobenzaldehyde
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Organic synthesis intermediate
ReferenceSame Category
2,2,4,4,6,6-Hexahydro-2,2,4,4,6,6-hexaphenoxytriazatriphosphorine
CAS1184-10-7
Flame retardant additive
ReferenceSame Category
Propanoic acid, 2,2-dimethyl-, sodium salt
CAS1184-88-9
chemical intermediate for organic synthesis
Referencestereoisomer of
2-Chloro(²H₄)benzoic acid
CAS1219795-28-4
research compound
Safety Reference
Warning
H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
H312Harmful in contact with skin
H314Causes severe skin burns and eye damage
H317May cause an allergic skin reaction
H332Harmful if inhaled
Customs Tariff Classification
The international HS code for 2-Chlorobenzoic acid (CAS 118-91-2) is 2916.39.
HS code (international, 6-digit)
2916.39
EU CN code (8-digit)
2916 39 90
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-chlorobenzoic acid
InChIKey
IKCLCGXPQILATA-UHFFFAOYSA-N
SMILES
C1=CC=C(C(=C1)C(=O)O)Cl
Synonyms (20)
- OCBA
- 2-Chlorobenzoic Acid; Mesalazine EP Impurity L; Mefenamic Acid EP Impurity C; Tolfenamic Acid EP Impurity A
- Mefenamic Acid Imp. C (EP); Mesalazine Imp. L (EP); 2-Chlorobenzoic Acid; Mefenamic Acid Impurity C; Mesalazine Impurity L; Tolfenamic Acid Impurity A
- Mesalazine EP Impurity L
- 2-Cba
- 2-Chlorobenzoic acid
- Benzoic acid, 2-chloro-
- Benzoic acid, chloro-
- Benzoic acid, o-chloro-
- CHLOROBENZOIC ACID
- CHLOROBENZOIC ACID, O-
- Kyselina o-chlorbenzoova
- M02 2-chlorobenzoic acid
- MEFENAMIC ACID IMPURITY C
- MESALAZINE IMPURITY L
- O-CHLOROBENZOIC ACID
- RWJ-333369 METABOLITE M4
- TOLFENAMIC ACID IMPURITY A
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