C8H4N2O2
160.13 g/mol
Industrial ChemicalDanger
1,4-Phenylene diisocyanate
CAS104-49-4EC203-207-6
Category
Industrial Chemical
Compound Class
Aromatic
Primary Use
Polyurethane intermediate
1,4-Phenylene diisocyanate is an industrial chemical primarily used as an intermediate in the production of polyurethane materials. It features an aromatic ring structure with two isocyanate functional groups, which are reactive in polymer formation.
Polyurethane 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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Safety Reference
Danger
H302Harmful if swallowed
H312Harmful in contact with skin
H315Causes skin irritation
H317May cause an allergic skin reaction
H318Causes serious eye damage
H319Causes serious eye irritation
H330Fatal if inhaled
H332Harmful if inhaled
H334May cause allergy or asthma symptoms or breathing difficulties if inhaled
H335May cause respiratory irritation
H411Toxic to aquatic life with long lasting effects
Customs Tariff Classification
The international HS code for 1,4-Phenylene diisocyanate (CAS 104-49-4) 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
1,4-diisocyanatobenzene
InChIKey
ALQLPWJFHRMHIU-UHFFFAOYSA-N
SMILES
C1=CC(=CC=C1N=C=O)N=C=O
Synonyms (17)
- PPDI
- 1,4-Benzenediisocyanate
- 1,4-Diisocyanatobenzene
- 1,4-PHENYLENEBIS(ISOCYANATE)
- 1,4-Phenylene diisocyanate
- BENZENE, 1,4-DIISOCYANATO-
- Benzene,4-diisocyanato-
- HYDROQUINONE, DIISOCYANATE
- Phenylene-1,4-diisocyanate
- benzene-1,4-diisocyanate
- p-Phenylene diisocyanate
- p-Phenylene isocyanate
- paraphenylene diisocyanate
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