Product Description
Tolylene-2,4-diisocyanate (TDI) is a colorless, transparent liquid under normal temperature and pressure conditions. The compound is sensitive to moisture and can readily react with water. Although it exhibits relatively good stability under appropriate conditions, it is prone to hydrolysis when exposed to moisture.
To maintain product quality and stability, it should be stored in a cool, dry, and well-ventilated environment, protected from direct sunlight and sources of moisture.
Properties
| Melting point | 20-22 °C(lit.) |
| Boiling point | 124-126 °C18 mm Hg(lit.) |
| density | 1.225 g/mL at 25 °C |
| vapor density | 6 (vs air) |
| vapor pressure | 0.03 mm Hg ( 25 °C) |
| refractive index | n20/D 1.568(lit.) |
| Fp | 250 °F |
| storage temp. | 2-8°C |
| solubility | Miscible with ether, acetone, benzene, carbontetrachloride and chlorobenzene. |
| form | Liquid |
| Specific Gravity | 1.225 |
| color | Colorless |
| Odor | Sharp, pungent odor detectable at 0.02 to 0.4 ppm |
| explosive limit | 0.095 |
| Water Solubility | reacts |
| Sensitive | Moisture Sensitive |
| Merck | 149530 |
| BRN | 744602 |
| Exposure limits | TLV-TWA 0.0355 mg/m3 (0.005 ppm) (ACGIH and NIOSH); STEL or ceiling/10 min 0.142 mg/m3 (0.02 ppm) (ACGIH, NIOSH, and OSHA); IDLH 71 mg/m3 (10 ppm) (NIOSH). |
| Stability: | Stable, but decomposes in the presence of moisture. Also heat and light sensitive. Readily polymerizes in contact with base. Reacts with compounds containing active hydrogen. Incompatible with strong oxidizing agents. Corrodes some copper and aluminium alloys. |
| InChIKey | DVKJHBMWWAPEIU-UHFFFAOYSA-N |
| LogP | 3.43 at 22℃ |
| CAS DataBase Reference | 584-84-9(CAS DataBase Reference) |
| NIST Chemistry Reference | Benzene, 2,4-diisocyanato-1-methyl-(584-84-9) |
| EPA Substance Registry System | Toluene-2,4-diisocyanate (584-84-9) |
| 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 | CZ6300000 |
| F | 46316 |
| Autoignition Temperature | >619 °C |
| TSCA | Yes |
| HazardClass | 6.1 |
| PackingGroup | II |
| HS Code | 29291010 |
| Hazardous Substances Data | 584-84-9(Hazardous Substances Data) |
| Toxicity | Acute oral LD50 for rats 5,800 mg/kg, wild birds 100 mg/kg (quoted, RTECS, 1985). |
| IDLA | 2.5 ppm |
Product Usage
Tolylene-2,4-diisocyanate is primarily utilized in the manufacture of polyurethane products, including polyurethane foams, coatings, and rubber materials. In addition, it is also employed in certain applications involving polyimide fibers and adhesive formulations.
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