3,4-Dichlorophenyl isocyanate
[CAS 102-36-3]

Identification

• Classification: Chemical reagent >> Organic reagent >> Cyanate ester / isocyanate
• Name: 3,4-Dichlorophenyl isocyanate
• Synonyms: 1,2-Dichloro-4-phenyl isocyanate; Isocyanic acid 3,4-dichlorophenyl ester
• Molecular Formula: C₇H₃Cl₂NO
• Molecular Weight: 188.01
• CAS Registry Number: 102-36-3
• EC Number: 203-026-2

Properties

• Melting point: 40-43 °C
• Boiling point: 118-120 °C (18 mmHg)
• Flash point: 110 °C
• Water solubility: decomposes

Safety Data

• Hazard Symbols: T
• Risk Statements: R23;R36/37/38;R42
• Safety Statements: S22;S26;S36/37/39;S45

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Acute toxicity	Acute Tox.	3	H301
Acute toxicity	Acute Tox.	4	H332
Skin irritation	Skin Irrit.	2	H315
Specific target organ toxicity - single exposure	STOT SE	3	H335
Respiratory sensitization	Resp. Sens.	1	H334
Eye irritation	Eye Irrit.	2	H319
Skin sensitization	Skin Sens.	1	H317
Serious eye damage	Eye Dam.	1	H318
Acute hazardous to the aquatic environment	Aquatic Acute	1	H400
Acute toxicity	Acute Tox.	2	H330
Skin sensitization	Skin Sens.	1A	H317
Chronic hazardous to the aquatic environment	Aquatic Chronic	1	H410
Eye irritation	Eye Irrit.	2A	H319
Respiratory sensitization	Resp. Sens.	1A	H334

• Transport Information: UN 2250