2-methyl-m-phenylene diisocyanate

Modify Date: 2025-08-24 19:37:34

2-methyl-m-phenylene diisocyanate Structure
2-methyl-m-phenylene diisocyanate structure
 Common Name 2-methyl-m-phenylene diisocyanate
CAS Number 91-08-7 Molecular Weight 174.15600
Density 1.225 g/mL at 25 °C(lit.) Boiling Point 129-133 °C18 mm Hg(lit.)
Molecular Formula C9H6N2O2 Melting Point 13°C
MSDS Chinese USA Flash Point >230 °F
Symbol GHS06 GHS08
GHS06, GHS08		 Signal Word Danger

 Names

Name toluene 2,6-diisocyanate
Synonym More Synonyms

 Chemical & Physical Properties

Density 1.225 g/mL at 25 °C(lit.)
Boiling Point 129-133 °C18 mm Hg(lit.)
Melting Point 13°C
Molecular Formula C9H6N2O2
Molecular Weight 174.15600
Flash Point >230 °F
Exact Mass 174.04300
PSA 58.86000
LogP 1.92960
Index of Refraction n20/D 1.571(lit.)
Storage condition −20°C
Stability Stability Reacts violently with water. Reacts very rapidly with compounds containing an active hydrogen, such as amines, alcohols and acids. Polymerizes rapidly in the presence of base. Combustible. Incompatible with strong oxidizing agents.

 Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
CZ6310000
CHEMICAL NAME :
Benzene, 2,6-diisocyanato-1-methyl-
CAS REGISTRY NUMBER :
91-08-7
BEILSTEIN REFERENCE NO. :
2211546
LAST UPDATED :
199710
DATA ITEMS CITED :
20
MOLECULAR FORMULA :
C9-H6-N2-O2
MOLECULAR WEIGHT :
174.17
WISWESSER LINE NOTATION :
OCNR B1 CNCO

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
TCLo - Lowest published toxic concentration
ROUTE OF EXPOSURE :
Inhalation
SPECIES OBSERVED :
Human
DOSE/DURATION :
50 ppb
TOXIC EFFECTS :
Sense Organs and Special Senses (Olfaction) - effect, not otherwise specified Sense Organs and Special Senses (Eye) - effect, not otherwise specified Lungs, Thorax, or Respiration - other changes
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Bird - wild bird species
DOSE/DURATION :
100 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value

MUTATION DATA

TYPE OF TEST :
Sister chromatid exchange
TEST SYSTEM :
Rodent - hamster Ovary
DOSE/DURATION :
300 mg/L
REFERENCE :
EMMUEG Environmental and Molecular Mutagenesis. (Alan R. Liss, Inc., 41 E. 11th St., New York, NY 10003) V.10- 1987- Volume(issue)/page/year: 13,133,1989 *** REVIEWS *** IARC Cancer Review:Animal Sufficient Evidence IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 39,287,1986 IARC Cancer Review:Human No Adequate Data IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 39,287,1986 IARC Cancer Review:Group 2B IMSUDL IARC Monographs, Supplement. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) No.1- 1979- Volume(issue)/page/year: 7,56,1987 *** OCCUPATIONAL EXPOSURE LIMITS *** OEL-DENMARK:TWA 0.005 ppm (0.035 mg/m3);Carcinogen JAN 1993 OEL-GERMANY:TWA 0.01 ppm (0.07 mg/m3) JAN 1993 OEL-SWITZERLAND:TWA 0.005 ppm (0.04 mg/m3);STEL 0.01 ppm JAN 1993 OEL-UNITED KINGDOM:TWA 0.02 mg/m3;STEL 0.07 mg/m3 JAN 1993 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - M0788 No. of Facilities: 609 (estimated) No. of Industries: 14 No. of Occupations: 18 No. of Employees: 15830 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - M0788 No. of Facilities: 415 (estimated) No. of Industries: 12 No. of Occupations: 22 No. of Employees: 2872 (estimated) No. of Female Employees: 284 (estimated)

 Safety Information

Symbol GHS06 GHS08
GHS06, GHS08
Signal Word Danger
Hazard Statements H315-H317-H319-H330-H334-H335-H351-H412
Precautionary Statements P260-P280-P284-P304 + P340 + P310-P342 + P311-P403 + P233
Personal Protective Equipment Eyeshields;Faceshields;full-face respirator (US);Gloves;multi-purpose combination respirator cartridge (US);type ABEK (EN14387) respirator filter
Hazard Codes T+
Risk Phrases 26-36/37/38-40-42/43-52/53
Safety Phrases S23-S36/37-S45-S61
RIDADR UN 2078 6.1/PG 2
WGK Germany 2
RTECS CZ6310000
Packaging Group II
Hazard Class 6.1

 Articles26

More Articles
Biological monitoring as a valid tool to assess occupational exposure to mixtures of 2,4-:2,6-toluene diisocyanate.

Med. Lav. 103(5) , 361-71, (2012)

Despite its advantages over environmental monitoring, biological monitoring of exposure to 2,4-:2,6-toluene diisocyanate (TDI) mixtures is still underused. The present study was designed in order to e...

Magnetic field dependent electro-conductivity of the graphite doped magnetorheological plastomers.

Soft Matter 11 , 6893-902, (2015)

In this work we reported a novel graphite doped conductive magnetorheological plastomer (GMRP) with magnetic field dependent electro-conductivity. The conductivity of the GMRPs increased by increasing...

LC-MS determination of urinary toluenediamine in workers exposed to toluenediisocyanate.

Toxicol. Lett. 134(1-3) , 259-64, (2002)

To improve the biological monitoring method for 2,6- and 2,4-toluenediisocyanate (TDI) exposure, we developed a simple and rapid method for analysis of the corresponding urinary metabolites, 2,6- and ...

 Synonyms

MFCD00002010
Tolylene 2,6-diisocyanate
2-METHYL-M-PHENYLENE DIISOCYANATE
EINECS 202-039-0
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