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143634

Sigma-Aldrich

p-Tolyl isocyanate

99%

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Synonym(s):
4-Methylphenyl isocyanate
Linear Formula:
CH3C6H4NCO
CAS Number:
Molecular Weight:
133.15
Beilstein/REAXYS Number:
471494
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.22

Quality Level

assay

99%

form

liquid

refractive index

n20/D 1.531 (lit.)

bp

70-72 °C/10 mmHg (lit.)

density

1.056 g/mL at 25 °C (lit.)

storage temp.

2-8°C

SMILES string

Cc1ccc(cc1)N=C=O

InChI

1S/C8H7NO/c1-7-2-4-8(5-3-7)9-6-10/h2-5H,1H3

InChI key

MGYGFNQQGAQEON-UHFFFAOYSA-N

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1 of 4

This Item
253715189278188204
vibrant-m

143634

p-Tolyl isocyanate

vibrant-m

253715

p-Tolyl isothiocyanate

vibrant-m

189278

p-Toluenesulfonyl isocyanate

vibrant-m

188204

p-Toluenesulfonylmethyl isocyanide

Quality Level

100

Quality Level

200

Quality Level

200

Quality Level

200

storage temp.

2-8°C

storage temp.

-

storage temp.

-

storage temp.

2-8°C

form

liquid

form

solid

form

liquid

form

solid

bp

70-72 °C/10 mmHg (lit.)

bp

237 °C (lit.), 62 °C/0.3 mmHg (lit.)

bp

144 °C/10 mmHg (lit.), 275-278 °C (lit.)

bp

-

density

1.056 g/mL at 25 °C (lit.)

density

-

density

1.291 g/mL at 25 °C (lit.)

density

-

General description

p-Tolyl isocyanate reacts with human serum albumin to form antigen which helps in detecting IgE antibodies in workers hypersensitive to toluene diisocyanate.

Application

p-Tolyl isocyanate was used to study the catalytic role of supported Rhodium(I) complex toward the reductive carbonylation of nitrobenzene in DMF medium.

signalword

Danger

Hazard Classifications

Acute Tox. 4 Dermal - Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Eye Dam. 1 - Resp. Sens. 1 - Skin Corr. 1C - Skin Sens. 1 - STOT SE 3

target_organs

Respiratory system

Storage Class

8A - Combustible, corrosive hazardous materials

wgk_germany

WGK 3

flash_point_f

150.8 °F - closed cup

flash_point_c

66 °C - closed cup

ppe

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter


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Customers Also Viewed

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Johannes Lenz et al.
Polymers, 11(8) (2019-07-31)
A series of new flame retardants (FR) based on dibenzo[d,f][1,3,2]dioxaphosphepine 6-oxide (BPPO) incorporating acrylates and benzoquinone were developed previously. In this study, we examine the fire behavior of the new flame retardants in polyisocyanurate (PIR) foams. The foam characteristics, thermal
K S Tse et al.
Allergy, 40(5), 314-320 (1985-07-01)
The prevalence of sensitization was studied in a group of 76 foundry workers with occupational exposure to diphenylmethane diisocyanate (MDI). Ten workers had clinical evidence of asthma, 40 had non-asthmatic respiratory symptoms, and 26 were asymptomatic. Specific IgE antibodies to
K C Chang et al.
Clinical allergy, 14(4), 329-339 (1984-07-01)
A worker developed two episodes of severe asthma 90 min after cutting a polyurethane plate made of diphenylmethane diisocyanate (MDI) using a rapidly turning carbide blade. Intradermal skin testing with MDI-human serum albumin (MDI-HSA) and p-tolyl isocyanate-HSA (p-TMI-HSA) were positive
Immunologic sensitization and pulmonary hypersensitivity by repeated inhalation of aromatic isocyanates.
M H Karol et al.
Toxicology and applied pharmacology, 53(2), 260-270 (1980-04-01)
C J Game
American Industrial Hygiene Association journal, 43(10), 759-763 (1982-10-01)
Sera of 91 people were assayed for IgE which bound to a p-tolyl-isocyanate-human serum albumin conjugate. The sera came from 20 blood donors, 70 factory workers, and 1 casualty patient. Three factory workers had abnormally high assay values in association

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