C8Cl4N2
265.9 g/mol
Pharmaceutical IntermediateWarning
Tetrachlorophthalonitrile
CAS1953-99-7EC217-783-1
Category
Pharmaceutical Intermediate
Compound Class
Halocarbon
Primary Use
Pharmaceutical Intermediate
Tetrachlorophthalonitrile is an organic compound with the formula C₆Cl₄(CN)₂, consisting of a benzene ring substituted with four chlorine atoms and two nitrile groups. It is primarily used as an intermediate in the production of pharmaceuticals and pesticides.
Pharmaceutical intermediatePesticide intermediate
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
StrongStructure SimilarSimilarity 0.86
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SimilarStructure SimilarSimilarity 0.79
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Safety Reference
Warning
H312Harmful in contact with skin
H332Harmful if inhaled
Customs Tariff Classification
The international HS code for Tetrachlorophthalonitrile (CAS 1953-99-7) is 2926.90.
HS code (international, 6-digit)
2926.90
EU CN code (8-digit)
2926 90 70
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
3,4,5,6-tetrachlorobenzene-1,2-dicarbonitrile
InChIKey
OQHXZZGZASQSOB-UHFFFAOYSA-N
SMILES
C(#N)C1=C(C(=C(C(=C1Cl)Cl)Cl)Cl)C#N
Synonyms (15)
- Perchlorophthalonitrile
- Phthalonitrile, tetrachloro-
- Tetrachlorophthalodinitrile
- Tetrachlorophthalonitrile
- o-TCPN
- o-Tetrachlorophthalodinitrile
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