C7H4ClNO
153.56 g/mol
Pharmaceutical IntermediateDanger
4-Chlorophenyl isocyanate
CAS104-12-1EC203-176-9
Category
Pharmaceutical Intermediate
Compound Class
Aromatic
Primary Use
Pharmaceutical Intermediate
4-Chlorophenyl isocyanate is a colorless to yellow liquid or crystalline solid used as a chemical intermediate in the manufacture of pharmaceuticals and pesticides.
Intermediate for pharmaceutical manufacturingIntermediate for pesticide manufacturing
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
SimilarStructure SimilarSimilarity 0.74
1,4-diisocyanatobenzene
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P-chlorobenzylchloride
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pharmaceutical intermediate
Safety Reference
Danger
H302Harmful if swallowed
H315Causes skin irritation
H318Causes serious eye damage
H330Fatal if inhaled
H334May cause allergy or asthma symptoms or breathing difficulties if inhaled
H335May cause respiratory irritation
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects
H301Toxic if swallowed
H412Harmful to aquatic life with long lasting effects
Customs Tariff Classification
The international HS code for 4-Chlorophenyl isocyanate (CAS 104-12-1) is 2929.10.
HS code (international, 6-digit)
2929.10
EU CN code (8-digit)
2929 10 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
1-chloro-4-isocyanatobenzene
InChIKey
ADAKRBAJFHTIEW-UHFFFAOYSA-N
SMILES
C1=CC(=CC=C1N=C=O)Cl
Synonyms (19)
- PCPI
- 1-Chloro-4-isocyanatobenzene
- 1-chloro-4-isocyanatobenzen
- 4-Chloroisocyanatobenzene
- 4-Chlorophenyl isocyanate
- 4-Isocyanato chlorobenzene
- 4-chiorophenyl isocyanate
- 4-chloro-1-isocyanato benzene
- 4-chlorobenzenisocyanate
- 4-chlorophenyl isocynate
- p-Chlorfenylisokyanat
- p-Chlorfenylisokyanat [Czech]
- p-Chlorophenyl isocyanate
- p-chlorophenylisocvanate
- p-chlorphenyl isocyanate
- para-Chlorophenyl isocyanate
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