621-29-4

Name m-Tolyl isocyanate
CAS 621-29-4
EINECS(EC#) 210-676-0
Molecular Formula C8H7NO
MDL Number MFCD00002021
Molecular Weight 133.15
MOL File 621-29-4.mol
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Chemical Properties

Appearance Clear colorless to pale yellow liquid
Boiling point  75-76 °C12 mm Hg(lit.)
density  1.033 g/mL at 25 °C(lit.)
vapor pressure  56.3Pa at 25℃
refractive index  n20/D 1.5305(lit.)
Fp  150 °F
storage temp.  2-8°C
form  clear liquid
color  Colorless to Yellow to Orange
Water Solubility  10g/L at 20℃
Sensitive  Moisture Sensitive
BRN  386149
InChI 1S/C8H7NO/c1-7-3-2-4-8(5-7)9-6-10/h2-5H,1H3
InChIKey CPPGZWWUPFWALU-UHFFFAOYSA-N
SMILES Cc1cccc(c1)N=C=O
LogP 1.4
CAS DataBase Reference 621-29-4(CAS DataBase Reference)
NIST Chemistry Reference Benzene, 1-isocyanato-3-methyl-(621-29-4)
EPA Substance Registry System 621-29-4(EPA Substance)
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Safety Data

Hazard Codes  T+
Risk Statements 
R26:Very Toxic by inhalation.
R36/37/38:Irritating to eyes, respiratory system and skin .
R42:May cause sensitization by inhalation.
Safety Statements 
S23:Do not breathe gas/fumes/vapor/spray (appropriate wording to be specified by the manufacturer) .
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
RIDADR  UN 2206 6.1/PG 2
WGK Germany  2
RTECS  CZ6315000
F  10-21
TSCA  Yes
REACH Registrations Active
HazardClass  6.1
PackingGroup  II
HS Code  29291090
Storage Class 6.1A - Combustible acute toxic Cat. 1 and 2
very toxic hazardous materials
Hazard Classifications Acute Tox. 1 Inhalation
Eye Dam. 1
Resp. Sens. 1
Skin Corr. 1C
Skin Sens. 1
STOT SE 3

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Hazard Information

Material Safety Data Sheet(MSDS)

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