2-METHYL-M-PHENYLENE DIISOCYANATE
-
2-METHYL-M-PHENYLENE DIISOCYANATE
structure -
-
CAS No:
91-08-7
-
Formula:
C9H6N2O2
-
Chemical Name:
2-METHYL-M-PHENYLENE DIISOCYANATE
-
Synonyms:
1,3-diisocyanato-2-methyl-benzen;1,3-Diisocyanato-2-methylbenzene;2,6-diisocyanato-1-methyl-benzen;2,6-Diisocyanato-1-methylbenzene;2,6-Toluenediiosocyanate;Isocyanic acid, 2-methyl-m-phenylene ester;isocyanicacid,2-methyl-meta-phenyleneester;isocyanicacid,2-methyl-m-phenyleneester
- Categories:
-
CAS No:
Description
colourless liquid
ChEBI: A toluene meta-diisocyanate in which the isocyanato groups are at positions 2 and 6 relative to the methyl group on the benzene ring.
Liquid. Used in the manufacture of polyurethane foams, elastomers, and coatings; crosslinking agent for nylon 6.
Confirmed carcinogen. Poison by ingestion and inhalation. Human systemic effects by inhalation: olfactory, eye, and pulmonary changes. Flammable liquid. When heated to decomposition it emits toxic fumes of NOx. See also CYANATES.
It is purified by fractional distillation in a vacuum. Store it under N2 in sealed dark ampoules as it is water and light sensitive. Like the preceding 2,4-isomer, it has a sharp pungent odour, is TOXIC and is IRRITATING TO THE EYES. [Beilstein 13 IV 259.]
2-METHYL-M-PHENYLENE DIISOCYANATE Basic Attributes
174.16
174.16
2211546
202-039-0
TSCA listed
Clear colorless to light yellow
29291090
Characteristics
58.86000
1.92960
Clear colorless to light yellow Liquid
1.225 g/mL at 25 °C(lit.)
13°C
129-133 °C18 mm Hg(lit.)
>230 °F
n20/D1.571(lit.)
It hydrolyzes in water.
−20°C
2.78Pa at 25℃
Non flammable
Pungent
2-METHYL-M-PHENYLENE DIISOCYANATE reacts violently with amines, alcohols, bases and warm water, causing fire and explosion hazards. [Handling Chemcials Safely 1980. p. 907]. Reaction with water to form Carbon Dioxide [Merck 11th ed. 1989].
>1148 °F
−20°C
Safety Information
II
6.1
UN 2078 6.1/PG 2
2
T+
23-36/37-45-61
CZ6310000
T+
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.
P260-P280-P284-P304 + P340 + P310-P342 + P311-P403 + P233
26-36/37/38-40-42/43-52/53
UN 2078 6.1/PG 2
When heated to decomposition, 2-METHYL-M-PHENYLENE DIISOCYANATE emits toxic fumes of nitrogen oxides. Ventilation should be adequate. If polyurethane products are heated, protection against isocyanate release is necessary. Avoid decomposing heat.
Toxicity
ACGIH TLV-TWA:0.001 ppm (0.007 mg/m3),Inhalable fraction and vapor;TLV-STEL:0.005 ppm (0.035 mg/m3),Inhalable fraction and vapor
Drug Information
Classified as slightly toxic orally. Probable oral lethal dose in humans is 5 to 15 g/kg or between 1 pint and 1 quart for a 70 (l50 lb.) person. Particularly poisonous when breathed. This is among the most poisonous of isocyanates. Acute and chronic exposures to low concentrations may produce asthmatic attacks.
2-METHYL-M-PHENYLENE DIISOCYANATE Use and Manufacturing
2-Methyl-m-phenylene Diisocyanate is used in method for preparing breathable sweat-absorbing EVA foam shoe material.
2,6-TDI may be used as a reference standard for the quantification of residual 2,6-TDI in foam samples using high performance liquid chromatography coupled to coordination-ionspray tandem mass spectrometry (HPLC-CIS-MS/MS).
Computed Properties
Molecular Weight:174.16
XLogP3:3.9
Hydrogen Bond Acceptor Count:4
Rotatable Bond Count:2
Exact Mass:174.042927438
Monoisotopic Mass:174.042927438
Topological Polar Surface Area:58.9
Heavy Atom Count:13
Complexity:239
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes
Recommended Suppliers of 2-METHYL-M-PHENYLENE DIISOCYANATE
-
![China]()
CN
5 YRS
Business licensed Certified factoryManufactory Supplier of Chemical Pesticides,Food Additives,Agrochemicals,Active Pharm Ingredients,Flavors and Fragrances,Chemical Catalyst,Chemical Materials,Chem&Pharm Intermediates,Organic Intermediates,Feed Additive -
![China]()
CN
5 YRS
Business licensedTrader Supplier of PVC resin,pvc paste resin,melamine
Learn More Other Chemicals
-
2,4,6-TRIMETHYL-1,3-PHENYLENE DIISOCYANATE
16959-10-7
-
Hexamethylene diisocyanate biuret, phthalic anhydride, maleic anhydride, trimethylolpropane, 1,6-hexanediol, hydrogenated bisphenol A polymerCAS:67892-85-7Purity:99% Package:25KG;5KG;1KG
67892-85-7
-
Dicyclohexylmethane diisocyanate
28605-81-4
-
2,2,4-Trimethylhexamethylene diisocyanate Formula
16938-22-0
-
1,5-Naphthalene diisocyanate Formula
3173-72-6
-
1,3-Phenylene diisocyanate Formula
123-61-5
-
1,4-Butanediol-hexamethylene diisocyanate copolymer Structure
25748-74-7
-
2,4,4-Trimethylhexamethylene diisocyanate Structure
15646-96-5
-
What is L-Lysine Diisocyanate
45172-15-4
-
What is Toluene diisocyanate trimer
9019-85-6
2-METHYL-M-PHENYLENE DIISOCYANATE
SDSRequest for Quotation