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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 16718Generated: October 23, 2026

2-Naphthyl isocyanate

2-Naphtyl isocyanate · β-Naphthyl isocyanate · 2-Naphthyl isocyanate · 2-isocyanato-naphthalen · beta-naphthylisocyanate · 2-isocyanato-Naphthalene · 2-Naphthalenyl isocyanate · Naphthalene, 2-isocyanato-

https://huagongshe.com/en/chemical/16718

2-Naphthyl isocyanate molecular structure

Identifiers & Physical Properties

CAS No.2243-54-1
Molecular formulaC11H7NO
Average molar mass169.18 g/mol
Monoisotopic mass169.05276385 g/mol
SMILESO=C=Nc1ccc2ccccc2c1
InChIKeyXIXJQNFTNSQTBT-UHFFFAOYSA-N
PubChem CID16718
EC No.218-815-7
DTXSIDDTXSID00176956

Chemical & Physical Properties

XLogP3.7
Topological polar surface area29.4
Hydrogen bond donors0
Hydrogen bond acceptors2
Rotatable bonds1
Heavy atoms13
Formal charge0
Complexity220
Melting point53-56 °C (lit.)
Boiling point83 °C/0.2 mmHg (lit.)
Density1.1616 (rough estimate)
Refractive index1.4900 (estimate)
Physical stateChunks
ColorWhite
SolubilityIt hydrolyzes in water.
SensitivityMoisture Sensitive
InChI1S/C11H7NO/c13-8-12-11-6-5-9-3-1-2-4-10(9)7-11/h1-7H
InChIKeyXIXJQNFTNSQTBT-UHFFFAOYSA-N
SMILESO=C=Nc1ccc2ccccc2c1
FDA UNII9ZE6124VOI
UNSPSC Code12352100
NACRESNA.22
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)dust mask type N95 (US), Eyeshields, Gloves
Hazard symbolsXn
Risk statements (R)20/21/22-36/37/38
Safety statements (S)26-27-36/37/39-45
UN transport numberUN 3335
Water hazard class (WGK)3
RTECS numberQJ7950000
Hazard classIRRITANTAcute Tox. 4 DermalAcute Tox. 4 InhalationAcute Tox. 4 OralEye Irrit. 2Resp. Sens. 1Skin Irrit. 2Skin Sens. 1STOT SE 3
Customs code29291090
Storage class11 - Combustible Solids

Safety & Regulations

GHS classificationDangerH302 (90.9%): Harmful if swallowed [Warning Acute toxicity, oral]H312 (90.9%): 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 (90.9%): Harmful if inhaled [Warning Acute toxicity, inhalation]H334 (13.6%): May cause allergy or asthma symptoms or breathing difficulties if inhaled [Danger Sensitization, respiratory]H335 (100%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposureRespiratory tract irritation]P233, P260, P261, P264, P264+P265, P270, P271, P280, P284, P301+P317, P302+P352, P304+P340, P305+P351+P338, P317, P319, P321, P330, P332+P317, P337+P317, P342+P316, P362+P364, P403, P403+P233, P405, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 44 reports by companies from 4 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 (90.9%)Skin Irrit. 2 (100%)Eye Irrit. 2 (100%)Resp. Sens. 1 (13.6%)STOT SE 3 (100%)
Personal protective equipment (PPE)dust mask type N95 (US), Eyeshields, Gloves
Water hazard class (WGK)3
RTECS numberQJ7950000
UN transport numberUN 3335
Customs code29291090
Risk statements (R)20/21/22-36/37/38
Signal wordDanger
GHS pictogramGHS07,GHS08
Hazard symbolsXn
Safety statements (S)26-27-36/37/39-45
Hazard class6.1Acute Tox. 4 DermalAcute Tox. 4 InhalationAcute Tox. 4 OralEye Irrit. 2Resp. Sens. 1Skin Irrit. 2Skin Sens. 1STOT SE 3
Storage class11 - Combustible Solids
Target organsRespiratory system
GHS hazard statementsH302+H312+H332-H315-H317-H319-H334-H335
GHS precautionary statementsP261-P264-P280-P301+P312-P302+P352+P312-P305+P351+P338

Applications & Uses

Uses

2-Naphthyl Isocyanate is a genotoxicant.

General Description

2-Naphthyl isocyanate is an aromatic isocyanate. It is formed during the rat liver microsome catalyzed oxidative metabolism of 2-naphthyl isothiocyanate.