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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 94460Generated: October 23, 2026

3,5-Dichlorophenyl isocyanate

1,3-Dichloro-5-isocyanatobenzene · 3,5-Dichlorophenyl i · 3,5-Dichlorophenyl isocyate · 3,5-Dichlorophenylisocyantae · 3,5-DICHLOROPHENYL ISOCYANATE · 3,5-DICHLOROISOCYANATOBENZENE · 3,5-dichlorobenzene isocyanate · 3,5-DichlorophenylIsocyanate>1-Isocyanato-3,5-dichlorobenzene

https://huagongshe.com/en/chemical/94460

3,5-Dichlorophenyl isocyanate molecular structure

Identifiers & Physical Properties

CAS No.34893-92-0
Molecular formulaC7H3Cl2NO
Average molar mass188.01 g/mol
Monoisotopic mass186.95916908 g/mol
SMILESO=C=Nc1cc(Cl)cc(Cl)c1
InChIKeyXEFUJGURFLOFAN-UHFFFAOYSA-N
PubChem CID94460
EC No.252-276-9
DTXSIDDTXSID2067878

Chemical & Physical Properties

XLogP4
Topological polar surface area29.4
Hydrogen bond donors0
Hydrogen bond acceptors2
Rotatable bonds1
Heavy atoms11
Formal charge0
Complexity169
Melting point32-34 °C (lit.)
Boiling point243 °C
Density1.38 g/mL at 25 °C (lit.)
Vapor pressure4.7-8.1Pa at 25℃
Refractive index1.6000 (estimate)
Flash point>230 °F
Storage conditions-20°C Freezer
Solubilitydecomposes
Physical stateLow Melting Solid
ColorWhite to slightly yellow
SensitivityMoisture Sensitive
BRN510282
Henry's law constant7.7×10-2 mol/(m3Pa) at 25℃, Zhang et al. (2010)
InChI1S/C7H3Cl2NO/c8-5-1-6(9)3-7(2-5)10-4-11/h1-3H
InChIKeyXEFUJGURFLOFAN-UHFFFAOYSA-N
SMILESClc1cc(Cl)cc(c1)N=C=O
LogP (partition coefficient)3.88
CAS DataBase Reference34893-92-0(CAS DataBase Reference)
NIST Chemistry Reference3,5-Dichlorophenyl isocyanate(34893-92-0)
EPA Substance Registry System3,5-Dichlorophenyl isocyanate (34893-92-0)
UNSPSC Code12352100
NACRESNA.22
GHS pictogramGHS06,GHS08,GHS09
Signal wordDanger
GHS hazard statementsH315-H317-H319-H330-H334-H335-H411
GHS precautionary statementsP260-P273-P280-P302+P352-P304+P340+P310-P305+P351+P338
Target organsRespiratory system
Personal protective equipment (PPE)Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges
Hazard symbolsT,T+
Risk statements (R)23/24/25-36/37/38-42-26
Safety statements (S)26-27-36/37/39-45-38-37/39-28A
UN transport numberUN 2250 6.1/PG 2
Water hazard class (WGK)3
F19-21
TSCA inventory statusTSCA listed
Hazard class6.1Acute Tox. 1 InhalationAquatic Chronic 2Eye Irrit. 2Resp. Sens. 1Skin Irrit. 2Skin Sens. 1ASTOT SE 3
Packing groupII
Customs code29291090
Storage class6.1A - Combustible acute toxic Cat. 1 and 2very toxic hazardous materials
REACH registrationsActive
Limited quantities0.5 Kg (solid)
Excepted quantitiesMax Inner Pack (1g or 1ml) and Max Outer Pack (500g or 500ml)

Safety & Regulations

GHS classificationDangerH301 (27%): Toxic if swallowed [Danger Acute toxicity, oral]P233, P260, P261, P262, P264, P264+P265, P270, P271, P280, P284, P301+P316, P302+P352, P304+P340, P305+P351+P338, P316, P319, P320, P321, P330, P332+P317, P337+P317, P342+P316, P361+P364, P362+P364, P403, P403+P233, P405, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 152 reports by companies from 9 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Regulatory informationStatus: Active Update: 22-06-2017 https://echa.europa.eu/registration-dossier/-/registered-dossier/1925
Hazard Classes and CategoriesAcute Tox. 3 (27%)
F19-21
Personal protective equipment (PPE)Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges
Water hazard class (WGK)3
TSCA inventory statusTSCA listed
UN transport numberUN 2250 6.1/PG 2
Customs code29291090
Risk statements (R)23/24/25-36/37/38-42-26
Signal wordDanger
GHS pictogramGHS06,GHS08,GHS09
Hazard symbolsT,T+
Safety statements (S)26-27-36/37/39-45-38-37/39-28A
Hazard class6.1Acute Tox. 1 InhalationAquatic Chronic 2Eye Irrit. 2Resp. Sens. 1Skin Irrit. 2Skin Sens. 1ASTOT SE 3
Storage class6.1A - Combustible acute toxic Cat. 1 and 2very toxic hazardous materials
Packing groupII
Target organsRespiratory system
GHS hazard statementsH315-H317-H319-H330-H334-H335-H411
Limited quantities0.5 Kg (solid)
Excepted quantitiesMax Inner Pack (1g or 1ml) and Max Outer Pack (500g or 500ml)
REACH registrationsActive
GHS precautionary statementsP260-P273-P280-P302+P352-P304+P340+P310-P305+P351+P338

Applications & Uses

Uses

3,5-Dichlorophenyl isocyanate is used as an intermediate for medicine and in iprodione. It is also useful for proteomic research.