2-Methyl-m-phenylene diisocyanate
- CAS No.
- 91-08-7
- Chemical Name:
- 2-Methyl-m-phenylene diisocyanate
- Synonyms
- 2,6-TDI;TOLUENE-2,6-DIISOCYANATE;hylenetic;2,6-TOLYLENE DIISOCYANATE;1,3-Diisocyanato-2-methylbenzene;1,3-diisocyanato-2-methyl-Benzene;Hylene tic;TDIPREPOLYMER;TOLUILENDIISOCYANATE;2-METHYL-M-PHENYLENE
- CBNumber:
- CB1408074
- Molecular Formula:
- C9H6N2O2
- Molecular Weight:
- 174.16
- MDL Number:
- MFCD00002010
- MOL File:
- 91-08-7.mol
- MSDS File:
- SDS
- TDS File:
- TDS
| Melting point | 13°C |
|---|---|
| Boiling point | 129-133 °C18 mm Hg(lit.) |
| Density | 1.225 g/mL at 25 °C(lit.) |
| vapor pressure | 2.78Pa at 25℃ |
| refractive index |
n |
| Flash point | >230 °F |
| storage temp. | −20°C |
| form | Liquid |
| color | Clear colorless to light yellow |
| Water Solubility | It hydrolyzes in water. |
| Sensitive | Moisture Sensitive |
| BRN | 2211546 |
| Exposure limits | 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 |
| 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. |
| InChI | 1S/C9H6N2O2/c1-7-8(10-5-12)3-2-4-9(7)11-6-13/h2-4H,1H3 |
| InChIKey | RUELTTOHQODFPA-UHFFFAOYSA-N |
| SMILES | Cc1c(cccc1N=C=O)N=C=O |
| LogP | 3.74 |
| CAS DataBase Reference | 91-08-7(CAS DataBase Reference) |
| Indirect Additives used in Food Contact Substances | TOLUENE 2,6-DIISOCYANATE |
| REACH Annex XVII Substances List | 2-methyl-m-phenylene diisocyanate (91-08-7) |
| FDA 21 CFR | 175.105 |
| EWG's Food Scores | 5-8 |
| FDA UNII | 78243HXH5O |
| EPA Substance Registry System | Toluene-2,6-diisocyanate (91-08-7) |
| UNSPSC Code | 41116107 |
| NACRES | NA.24 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |   GHS06,GHS08 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Danger | |||||||||
| Hazard statements | H330-H315-H319-H370-H372-H317-H334-H351-H335-H412 | |||||||||
| Precautionary statements | P501-P273-P272-P260-P270-P202-P201-P271-P264-P280-P284-P302+P352-P337+P313-P305+P351+P338-P308+P311-P362+P364-P333+P313-P304+P340+P310-P403+P233-P405 | |||||||||
| target organs | Respiratory system | |||||||||
| PPE | Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter | |||||||||
| Hazard Codes | T+ | |||||||||
| Risk Statements | 26-36/37/38-40-42/43-52/53 | |||||||||
| Safety Statements | 23-36/37-45-61 | |||||||||
| RIDADR | UN 2078 6.1/PG 2 | |||||||||
| WGK Germany | 2 | |||||||||
| RTECS | CZ6310000 | |||||||||
| F | 8-10-19-21 | |||||||||
| Autoignition Temperature | >1148 °F | |||||||||
| TSCA | TSCA listed | |||||||||
| 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. 2 Inhalation Aquatic Chronic 3 Carc. 2 Eye Irrit. 2 Resp. Sens. 1 Skin Irrit. 2 Skin Sens. 1 STOT SE 3 |
|||||||||
| Hazardous Substances Data | 91-08-7(Hazardous Substances Data) | |||||||||
| REACH Registrations | Inactive | |||||||||
| NFPA 704 |
|
2-Methyl-m-phenylene diisocyanate price More Price(19)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | 223867 | Tolylene-2,6-diisocyanate 97% | 91-08-7 | 1g | $71.7 | 2026-04-30 | Buy |
| Sigma-Aldrich | 33493 | 2,6-TDI analytical standard | 91-08-7 | 100mg | $98.5 | 2026-04-30 | Buy |
| Sigma-Aldrich | 223867 | Tolylene-2,6-diisocyanate 97% | 91-08-7 | 5g | $234 | 2026-04-30 | Buy |
| TCI Chemical | T1153 | Tolylene-2,6-diisocyanate >98.0%(GC) | 91-08-7 | 1g | $41 | 2026-04-30 | Buy |
| TCI Chemical | T1153 | Tolylene-2,6-diisocyanate >98.0%(GC) | 91-08-7 | 5g | $125 | 2026-04-30 | Buy |
2-Methyl-m-phenylene diisocyanate Chemical Properties, Uses, Production
Chemical Properties
colourless liquid
Uses
2-Methyl-m-phenylene Diisocyanate is used in method for preparing breathable sweat-absorbing EVA foam shoe material.
Uses
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).
Definition
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.
Synthesis Reference(s)
The Journal of Organic Chemistry, 60, p. 257, 1995 DOI: 10.1021/jo00106a044
General Description
Liquid. Used in the manufacture of polyurethane foams, elastomers, and coatings; crosslinking agent for nylon 6.
Reactivity Profile
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].
Health Hazard
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.
Fire Hazard
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.
Flammability and Explosibility
Non flammable
Safety Profile
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.
Purification Methods
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.]
Toxics Screening Level
The Initial Threshold Screening Level (ITSL) for TDI is 0.07 μg/m3 (annual average). The Second ITSL for TDI is 0.4 μg/m3 (8-hr average). The Initial Risk Screening Level for TDI is 0.03 μg/m3 (annual average). The Secondary Risk Screening Level for TDI is 0.3 μg/m3 (annual average)
2-Methyl-m-phenylene diisocyanate Preparation Products And Raw materials
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| 3B Pharmachem (Wuhan) International Co.,Ltd. | 18930552037 | 3bsc@sina.com | China | 15813 | 69 |
| Alfa Aesar | 400-6106006 | saleschina@alfa-asia.com | China | 30103 | 84 |
| TCI (Shanghai) Development Co., Ltd. | 021-67121386 | Sales-CN@TCIchemicals.com | China | 24512 | 81 |
| Energy Chemical | 400-0056266 | sales8178@energy-chemical.com | China | 44850 | 61 |
| Syntechem Co.,Ltd | info@syntechem.com | China | 12973 | 57 | |
| Sichuan Kulinan Technology Co., Ltd | 400-1166-196 18981987031 | cdhxsj@163.com | China | 11674 | 57 |
| Sinopharm Chemical Reagent Co,Ltd. | 86-21-63210123 | sj_scrc@sinopharm.com | China | 9791 | 79 |
| Spectrum Chemical Manufacturing Corp. | 021-021-021-67601398-809-809-809 15221380277 | marketing_china@spectrumchemical.com | China | 9643 | 60 |
| Thermo Fisher Scientific | 800-810-5118 | cnchemical@thermofisher.com | China | 17752 | 75 |
| TOKYO CHEMICAL INDUSTRY CO., LTD. | 03-36680489 | Sales-JP@TCIchemicals.com | Japan | 28364 | 80 |
View Latest Price from 2-Methyl-m-phenylene diisocyanate manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2026-03-20 | 2-METHYL-M-PHENYLENE DIISOCYANATE
91-08-7
|
1KG | 99% | 20 mt | Hebei Chuanghai Biotechnology Co., Ltd |
-
- 2-METHYL-M-PHENYLENE DIISOCYANATE
91-08-7
- 99%
- Hebei Chuanghai Biotechnology Co., Ltd
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