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Benzyl isocyanate

CAS No.
3173-56-6
Chemical Name:
Benzyl isocyanate
Synonyms
(Isocyanatomethyl)benzene;1-(isocyanatomethyl)benzene;Benzyl isocyate;BENZYL ISOCYANATE;BenzylIsocyanate>Benzylisocyanate,98%;Benzyl isocyanate 98%;Benzyl isocyanate, 99+%;Isocyanatomethyl-benzene;(isocyanatomethyl)-benzen
CBNumber:
CB1714526
Molecular Formula:
C8H7NO
Molecular Weight:
133.15
MDL Number:
MFCD00009701
MOL File:
3173-56-6.mol
MSDS File:
SDS
Last updated:2026-05-27 23:47:00

Benzyl isocyanate Properties

Melting point 259-261 °C(Solv: acetic acid (64-19-7))
Boiling point 101-104 °C/33 mmHg (lit.)
Density 1.078 g/mL at 25 °C (lit.)
refractive index n20/D 1.526(lit.)
Flash point 113 °F
storage temp. Inert atmosphere,2-8°C
solubility Chloroform (Slightly), Methanol (Slightly)
form Liquid
color Clear colorless to faintly yellow
Water Solubility It hydrolyzes with water.
Sensitive Moisture Sensitive
BRN 636508
InChI 1S/C8H7NO/c10-7-9-6-8-4-2-1-3-5-8/h1-5H,6H2
InChIKey YDNLNVZZTACNJX-UHFFFAOYSA-N
SMILES O=C=NCc1ccccc1
CAS DataBase Reference 3173-56-6(CAS DataBase Reference)
FDA UNII 8I2LI357GQ
NIST Chemistry Reference Benzyl isocyanate(3173-56-6)
UNSPSC Code 12352100
NACRES NA.22

SAFETY

Risk and Safety Statements

Symbol(GHS)  Flame (GHS02)Exclamation Mark (GHS07)Health Hazard (GHS08)
GHS02,GHS07,GHS08
Signal word  Danger
Hazard statements  H226-H315-H317-H319-H334-H335
Precautionary statements  P210-P233-P240-P280-P303+P361+P353-P305+P351+P338
PPE Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter
Hazard Codes  Xn,T
Risk Statements  10-36/37/38-42/43-23/24/25
Safety Statements  23-26-36/37-36/37/39-16
RIDADR  UN 3080 6.1/PG 2
WGK Germany  3
10-21
HazardClass  6.1
PackingGroup  II
HS Code  29291090
Storage Class 3 - Flammable liquids
Hazard Classifications Flam. Liq. 3
NFPA 704
2
3 0

Benzyl isocyanate price More Price(43)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 227269 Benzyl isocyanate 99% 3173-56-6 5g $106 2026-04-30 Buy
Sigma-Aldrich 227269 Benzyl isocyanate 99% 3173-56-6 25g $171 2026-04-30 Buy
TCI Chemical I0426 Benzyl Isocyanate >99.0%(GC) 3173-56-6 5g $50 2026-04-30 Buy
TCI Chemical I0426 Benzyl Isocyanate >99.0%(GC) 3173-56-6 25g $146 2026-04-30 Buy
Usbiological 261572 Benzyl isocyanate Asreported 3173-56-6 25g $396 2026-06-03 Buy
Product number Packaging Price Buy
227269 5g $106 Buy
227269 25g $171 Buy
I0426 5g $50 Buy
I0426 25g $146 Buy
261572 25g $396 Buy

Benzyl isocyanate Chemical Properties, Uses, Production

Chemical Properties

CLEAR COLOURLESS TO FAINTLY YELLOW LIQUID

Occurrence

benzyl isocyanate is a natural product found in Simicratea welwitschii with data available.

Uses

Benzyl isocyanate, is used as a protected ammonia equivalent in the stereo selective ring-opening of chiral 2,3-epoxy alcohols (from Sharpless asymmetric epoxidation). The key step in the sequence involves intramolecular cyclization of the carbamate intermediate. It is also used in a multicomponent, stereospecific synthesis of 1,3-oxazinane-2,4-diones employing an Al-salph complex.

Uses

Benzyl isocyanate was used to investigate the kinetics of isocyanate derivatization reaction in a continuous flow glass microfluidics chip. It was also used in a multicomponent, stereospecific synthesis of 1,3-oxazinane-2,4-diones employing an Al-salph complex (674699).

General Description

Benzyl isocyanate inhibits the formation of benzo[a]pyrene (BP)-DNA adduct and posses chemopreventive properties.

Synthesis

The conversion of benzyl azide to benzyl isocyanate (Scheme 1) was selected as the model reaction and it was performed both under conventional conditions and under MW irradiation. Various solvents were compared at a number of temperatures thanks to the versatility of the SynthWave reactor, which provides multiple-sample racks. Experiments were performed at 90, 70 and 50 °C at 14.5 bar of CO2 pressure.
Synthesis of benzyl isocyanate
Scheme 1: Synthesis of benzyl isocyanate.
One-pot sequential synthesis of isocyanates and urea derivatives via a microwave-assisted Staudinger–aza-Wittig reaction

32315-10-9
100-46-9
3173-56-6
Synthesis of Benzyl isocyanate from Triphosgene and Benzylamine

Benzyl isocyanate Preparation Products And Raw materials

Global Suppliers ( 274)
Supplier Tel Email Country ProdList Advantage
J & K SCIENTIFIC LTD. 18210857532 18210857532 jkinfo@jkchemical.com China 96815 76
Meryer (Shanghai) Chemical Technology Co., Ltd. 4006356688 18621169109 market03@meryer.com China 40202 62
Alfa Aesar 400-6106006 saleschina@alfa-asia.com China 30103 84
TCI (Shanghai) Development Co., Ltd. 021-67121386 Sales-CN@TCIchemicals.com China 24512 81
Energy Chemical 400-0056266 sales8178@energy-chemical.com China 44850 61
Wuhan Chemwish Technology Co., Ltd 86-027-67849912 sales@chemwish.com China 35884 56
Beijing Ouhe Technology Co., Ltd 13552068683 13522913783 2355560935@qq.com China 11777 60
Jia Xing Isenchem Co.,Ltd 0573-85285100 18627885956 isenchem@163.com China 9389 66
Accela ChemBio Co.,Ltd. 021-50795510 4000665055 marketing@accelachem.com China 10972 64
Nanjing Chemlin Chemical Co., Ltd 025-83697070 13770331960 info@chemlin.com.cn China 16305 64

View Latest Price from Benzyl isocyanate manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
Benzyl isocyanate pictures 2019-07-06 Benzyl isocyanate
3173-56-6
$1.00 1kg 99% Career Henan Chemical Co

Benzyl isocyanate Spectrum

Benzene, (isocyanatomethyl)- Isocyanatomethyl-benzene ISOCYANIC ACID BENZYL ESTER BENZYL ISOCYANATE Benzyl isocyanate, 99+% Benzyl isocyanate 98% Benzylisocyanate,98% 1-(isocyanatomethyl)benzene Benzyl isocyanate, 99+% 25GR Benzyl isocyanate, 99+% 5GR Benzyl isocyate (isocyanatomethyl)-benzen BenzylIsocyanate> Benzyl Isocyanate, ≥ 99.0% (Isocyanatomethyl)benzene 3173-56-6 2173-56-5 C8H7ON C6H5CH2NCO ISOCYANATE Building Blocks Nitrogen Compounds Organic Building Blocks Isocyanates Nitrogen Compounds Organic Building Blocks Isocyanates Phenyls & Phenyl-Het Phenyls & Phenyl-Het