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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 4612708Generated: October 28, 2026

2,4-Dichlorobenzyl isocyanate

2,4-DICHLOROBENZYL ISOCYANATE · 2,4-Dichlorobenzyl isocyanate 98% · 2,4-dichloro-1-(isocyanatomethyl)benzene · Benzene, 2,4-dichloro-1-(isocyanatomethyl)-

https://huagongshe.com/en/chemical/4612708

2,4-Dichlorobenzyl isocyanate molecular structure

Identifiers & Physical Properties

CAS No.19654-32-1
Molecular formulaC8H5Cl2NO
Average molar mass202.03 g/mol
Monoisotopic mass200.9748192 g/mol
SMILESO=C=NCc1ccc(Cl)cc1Cl
InChIKeyFUIUATRKBRZCQD-UHFFFAOYSA-N
PubChem CID4612708
EC No.625-504-3
DTXSIDDTXSID50404877

Chemical & Physical Properties

XLogP4.2
Topological polar surface area29.4
Hydrogen bond donors0
Hydrogen bond acceptors2
Rotatable bonds2
Heavy atoms12
Formal charge0
Complexity191
Boiling point273 °C (lit.)
Density1.388 g/mL at 25 °C (lit.)
Refractive indexn20/D 1.565(lit.)
Flash point>230 °F
Storage conditions2-8°C
Physical stateCrystalline Powder
ColorWhite to yellow to light brown
InChI1S/C8H5Cl2NO/c9-7-2-1-6(4-11-5-12)8(10)3-7/h1-3H,4H2
InChIKeyFUIUATRKBRZCQD-UHFFFAOYSA-N
SMILESClc1ccc(CN=C=O)c(Cl)c1
CAS DataBase Reference19654-32-1
UNSPSC Code12352100
GHS pictogramGHS07,GHS08
Signal wordDanger
GHS hazard statementsH302+H312+H332-H315-H317-H319-H334-H335
GHS precautionary statementsP261-P264-P280-P301+P312-P302+P352+P312-P305+P351+P338
Target organsRespiratory system
Personal protective equipment (PPE)Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter
Hazard symbolsXn
Risk statements (R)20/21/22-36/37/38
Safety statements (S)26-36
UN transport numberUN 2206 6.1/PG 3
Water hazard class (WGK)3
Storage class6.1C - Combustible acute toxic Cat.3toxic compounds or compounds which causing chronic effects
Hazard classAcute Tox. 4 DermalAcute Tox. 4 InhalationAcute Tox. 4 OralEye Irrit. 2Resp. Sens. 1Skin Irrit. 2Skin Sens. 1STOT SE 3

Safety & Regulations

GHS classificationWarningH302 (100%): Harmful if swallowed [Warning Acute toxicity, oral]H312 (100%): Harmful in contact with skin [Warning Acute toxicity, dermal]H315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]H319 (100%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]H332 (100%): Harmful if inhaled [Warning Acute toxicity, inhalation]H335 (100%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposureRespiratory tract irritation]P261, P264, P264+P265, P270, P271, P280, P301+P317, P302+P352, P304+P340, P305+P351+P338, P317, P319, P321, P330, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 39 reports by companies from 2 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website.
Hazard Classes and CategoriesAcute Tox. 4 (100%)Skin Irrit. 2 (100%)Eye Irrit. 2 (100%)STOT SE 3 (100%)
Personal protective equipment (PPE)Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter
Water hazard class (WGK)3
UN transport numberUN 2206 6.1/PG 3
Risk statements (R)20/21/22-36/37/38
Signal wordDanger
GHS pictogramGHS07,GHS08
Hazard symbolsXn
Safety statements (S)26-36
Storage class

Applications & Uses

Uses

2,4-Dichlorobenzyl isocyanate may be used in the preparation of N-(2,5-dichlorobenzyl)-1-(4-methoxybenzyl)-4,5-dihydro-1H-imidazol-2-amine.

General Description

2,4-Dichlorobenzyl isocyanate, also known as 2,4-dichloro-1-(isocyanatomethyl)benzene, is an organic building block containing an isocyanate group.

6.1C - Combustible acute toxic Cat.3toxic compounds or compounds which causing chronic effects
Target organsRespiratory system
GHS hazard statementsH302+H312+H332-H315-H317-H319-H334-H335
Hazard classAcute Tox. 4 DermalAcute Tox. 4 InhalationAcute Tox. 4 OralEye Irrit. 2Resp. Sens. 1Skin Irrit. 2Skin Sens. 1STOT SE 3
GHS precautionary statementsP261-P264-P280-P301+P312-P302+P352+P312-P305+P351+P338