8.21001 EMD Millipore

Phenyl isocyanate

Phenyl isocyanate for synthesis. CAS 103-71-9, EC Number 203-137-6, chemical formula C₆H₅NCO., for synthesis

Synonym: Isocyanic acid phenyl ester, Isocyanatobenzene

  • CAS Number 103-71-9

  • Linear Formula C₇H₅NO

  • Molecular Weight 119.12 g/mol

  •  EC Number 203-137-6



Related Categories Biochemicals and Reagents More...
packaging   1 l in Glass bottle (8210011000)
  250 ml in Glass bottle (8210010250)
  5 ml in Glass bottle (8210010005)
bp   165 °C (1013 hPa)
expl. lim.     1.2 %(V)
vapor pressure   2.5 hPa (20 °C)
solubility   0.617 g/l Hydrolysis
density   1.10 g/cm3 (20 °C)
flash point   51 °C
autoignition temp.   645 °C
mp   -33 °C
LD 50 oral   LD50 Rat 800 mg/kg
LD 50 dermal   LD50 Rabbit 7130 mg/kg
shipped in   ambient
storage temp.   Store below +30°C.
specifications   Assay (GC, area%): ≥ 98.0 % (a/a)
  Density (d 20 °C/ 4 °C): 1.093 - 1.095
  Identity (IR): passes test

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Safety Information

HS Code 
2929 10 00
Hazard Statement(s) 
H226: Flammable liquid and vapour.
H302: Harmful if swallowed.
H314: Causes severe skin burns and eye damage.
H317: May cause an allergic skin reaction.
H330: Fatal if inhaled.
H334: May cause allergy or asthma symptoms or breathing difficulties if inhaled.
Precautionary Statement(s) 
P210: Keep away from heat.
P280: Wear protective gloves/ protective clothing/ eye protection/ face protection.
P301 + P330 + P331: IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.
P302 + P352: IF ON SKIN: Wash with plenty of soap and water.
P304 + P340: IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing.
P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P308 + P310: IF exposed or concerned: immediately call a POISON CENTER or doctor/ physician.
Storage class 
3 Flammable liquids
WGK 2 water endangering
Organic acid halides, anhydrides and isocyanates can be added dropwise to an excess of methanol (Cat. No. 822283) to convert them into the corresponding methyl esters or methyl carbamates. If necessary, neutralize with sodium hydroxide solution (Cat. No. 105587). Fill into container A.
Hazard Pictogram(s) 
GHS02  GHS02
Hazard Pictogram(s) 
GHS05  GHS05
Hazard Pictogram(s) 
GHS06  GHS06
Hazard Pictogram(s) 
GHS08  GHS08
Hazard Symbols 
Very toxic  Very toxic
Declaration (railroad and road) ADR, RID 
UN 2487 , 6.1 (3), I
Declaration (transport by air) IATA-DGR 
UN 2487 , 6.1 (3),
Declaration (transport by sea) IMDG-Code 
UN 2487 , 6.1 (3), I
Categories of danger 
flammable, very toxic, corrosive, sensitizing
R Phrase 
R 10-22-26-34-42/43
Flammable.Harmful if swallowed.Very toxic by inhalation.Causes burns.May cause sensitisation by inhalation and skin contact.
S Phrase 
S 23-26-36/37/39-45
Do not breathe vapour.In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.Wear suitable protective clothing, gloves and eye/face protection.In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).
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