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185353 Sigma-Aldrich

Phenyl isocyanate

≥98%

Synonym: Isocyanatobenzene, PhNCO

  • CAS Number 103-71-9

  • Linear Formula C6H5NCO

  • Molecular Weight 119.12

  •  Beilstein/REAXYS Number 471391

  •  EC Number 203-137-6

  •  MDL number MFCD00001994

  •  eCl@ss 39031801

  •  PubChem Substance ID 24850685

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Properties

Related Categories Building Blocks, Chemical Synthesis, Isocyanates, Nitrogen Compounds - Organic Building Blocks, Organic Building Blocks More...
vapor pressure   1.4 mmHg ( 20 °C)
InChI Key   DGTNSSLYPYDJGL-UHFFFAOYSA-N
assay   ≥98%
refractive index   n20/D 1.535 (lit.)
bp   162-163 °C(lit.)
mp   −30 °C (lit.)
density   1.096 g/mL at 25 °C (lit.)
storage temp.   2-8°C

Description

General description

Phenyl isocyanate reacts with ethyl alcohol to yield ethyl α,γ-diphenylallophanate and trace of phenyl isocyanate dimer.

Application

Phenyl isocyanate (PhNCO) can undergo addition reaction with primary nitroparaffins in the presence of a tertiary alkyl amine catalyst to form sym-disubstituted urea and furoxane. It can also react with cyclohexadienones to form vicinal diamine-containing heterocycle derivatives.

Phenyl isocyanate was used to prepare chemically modified cellulose paper. It was used in the synthesis of functionalized graphene oxide nanoplatelets.

Packaging

100, 500 g in Sure/Seal™

5 g in glass bottle

Safety & Documentation

Safety Information

Signal word 
Danger
Hazard statements 
Precautionary statements 
RIDADR 
UN 2487 3(6.1) / PGI
WGK Germany 
2
RTECS 
DA3675000
Flash Point(F) 
123.8 °F
Flash Point(C) 
51 °C

Documents

Certificate of Analysis

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Certificate of Origin

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Protocols & Articles

Articles

HPLC Analysis of Isocyanates on Titan™ C18

From our library of Articles, Sigma-Aldrich presents HPLC Analysis of Isocyanates on Titan™ C18
Keywords: Air Monitoring, Chromatography, High performance liquid chromatography, Liquid chromatography mass spectrometry, Mass spectrometry

Peer-Reviewed Papers
15

References

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