104-49-4
p-phenylene diisocyanate
CAS: 104-49-4
Molecular Formula: C8H4N2O2
104-49-4 - Names and Identifiers
104-49-4 - Physico-chemical Properties
| Molecular Formula | C8H4N2O2 |
| Molar Mass | 160.13 |
| Density | 1.3848 (rough estimate) |
| Melting Point | 96-99 °C (lit.) |
| Boling Point | 260 °C (lit.) |
| Flash Point | >230°F |
| Water Solubility | 130mg/L at 20℃ |
| Solubility | THF: soluble |
| Vapor Presure | <0.01 mm Hg ( 20 °C) |
| Appearance | powder to crystal |
| Color | White to Light yellow |
| Stability | Stable. Combustible. Incompatible with strong oxidising agents, strong alkalies, strong acids, alcohols, amines. Moisture sensitive. |
| Refractive Index | 1.4900 (estimate) |
104-49-4 - Risk and Safety
| Risk Codes | R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. R36/37/38 - Irritating to eyes, respiratory system and skin. R42 - May cause sensitization by inhalation R34 - Causes burns R41 - Risk of serious damage to eyes R38 - Irritating to the skin |
| Safety Description | S22 - Do not breathe dust. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37 - Wear suitable protective clothing and gloves. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. |
| UN IDs | UN 2811 6.1/PG 3 |
| WGK Germany | 3 |
| RTECS | CZ6150000 |
| HS Code | 29291010 |
| Hazard Class | 6.1 |
| Packing Group | III |
104-49-4 - Reference Information
| LogP | 3.19 at 20℃ |
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Use | p-phenylene diisocyanate is the simplest aromatic diisocyanate with white flaky crystals. Can be used as organic synthesis, pharmaceutical intermediates. intermediate |
Last Update：2024-04-10 22:29:15
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