Product Description of Tolylene-2,4-diisocyanate CAS#584-84-9
Toluene-2,4-diisocyanate is a clear, colorless liquid under normal conditions and is highly sensitive to moisture. It is relatively stable during proper storage and handling but may react with water and undergo hydrolysis. For optimal stability and safety, it should be stored in a cool, dry, well-ventilated area and protected from direct sunlight.
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Chemical Properties of Tolylene-2,4-diisocyanate CAS#584-84-9
| 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 | 9.5% |
| Water Solubility | reacts |
| Sensitive | Moisture Sensitive |
| Merck | 14,9530 |
| 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) |
Safety Information
| 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 | 10-21 |
| 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 |
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Product Application of Tolylene-2,4-diisocyanate CAS#584-84-9
Tolylene-2,4-diisocyanate (TDI 80/20) is mainly used in the production of polyurethane foams, elastomers, coatings, adhesives, sealants, and other polyurethane products. It is widely applied in the furniture, automotive, construction, and industrial sectors.
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