【CAS】26471-62-5
Alias: 1,3-diisocyanatomethyl-benzen;1,3-diisocyanatomethyl-Benzene
Molecular formula: C9H6N2O2 Relative molecular mass: 174.16
Structural formula:
1.Product Property
Colorless transparent or pale yellow flammable liquid. It has a strong irritating odor. It is miscible with ethanol (upon decomposition), diethylene glycol, ether, acetone, carbon tetrachloride, benzene, chlorobenzene, kerosene, and olive oil. Toluene diisocyanate (TDI) has six isomers: 2,3-TDI, 2,4-TDI, 2,5-TDI, 2,6-TDI, 3,4-TDI, and 3,5-TDI. Among them, 2,4-TDI and 2,6-TDI are the most common, and industrial products are usually a mixture of 2,4-TDI and 2,6-TDI.
2.
| Parameter | Specification |
| Isomer Ratio (2,4-/2,6-TDI) | 80:20 or 65:35 (as specified) |
| Purity (GC, % wt.) | ≥ 99.5% |
| Hydrolyzable Chloride | ≤ 0.01% (100 ppm) |
| Total Chlorine | ≤ 0.1% (1000 ppm) |
| Color (APHA) | ≤ 30 |
| Viscosity (25°C, mPa·s) | 3.0 – 4.0 |
| Density (20°C, g/cm³) | 1.220 – 1.224 |
| Flash Point (°C) | ≥ 127 (closed cup) |
| NCO Content (% wt.) | 48.0 – 48.5 |
| Water Content | ≤ 0.05% (500 ppm) |
3.Application scope and Usage
Used as raw materials for manufacturing polyurethane soft foam plastics, coatings, rubber and adhesives
4.Package and Storage
Common packaging includes 500ml glass bottles, glass bottles with iron caps and sealed necks, or plastic bottles. For large quantities, metal drums (such as galvanized iron drums) or stainless steel tanks are usually used.
It should be stored in a cool and dry place. The recommended temperature range is 20-35℃. Avoid high temperatures as they may cause decomposition.
