Properties of Arsine (AsH3)
Arsine, also known as arsane, is a chemical compound with the formula AsH3. It is a colorless, flammable, and highly toxic gas that has a distinct, garlic-like odor. Arsine is used in some industrial applications, such as the production of semiconductors, but its extreme toxicity makes it dangerous to handle without proper safety precautions.
The following table provides a comprehensive list of arsine properties in both SI and US customary/Imperial units at normal temperature and pressure (NTP).
Click on the icon to switch between Metric and Imperial units.
| Physical Properties | Metric |
|---|---|
| Molar Mass | 77.945 g/mol |
| Density (25°C) | 3.186 kg/m3 |
| Dynamic Viscosity (25°C) | 14.58 µPa·s |
| Thermal Properties | Metric |
| Melting Point | -116.9 °C |
| Boiling Point | -62.5 °C |
| Thermal Conductivity (25°C) | 0.0131 W/m·K |
| Specific Heat Capacity (Cp) | 494 J/kg·K |
| Critical Constants | Metric |
| Critical Temperature (Tc) | 99.9 °C |
| Critical Pressure (Pc) | 6.6 MPa |
| Critical Density (ρc) | 588 kg/m3 |
| Hazardous Data | Metric |
| Autoignition Temperature | 285 °C |
| Lower Flammability Limit | 5.1% |
| Upper Flammability Limit | 78% |
| NFPA Rating (Health) | 4 |
| NFPA Rating (Fire) | 4 |
| NFPA Rating (Reactivity) | 2 |
Unless stated otherwise, all values are taken at room temperature (approximately 20°C or 68°F) and 1 atm pressure. (1 atm = 101,325 Pa)
Related Pages
References: 1) Cardarelli, François. Materials Handbook: A Concise Desktop Reference. Switzerland: Springer International Publishing, 2018. 2) CRC Handbook of Chemistry and Physics, 97th Edition. United Kingdom: CRC Press, 2016-2017. 3) Yaws, Carl L. The Yaws Handbook of Physical Properties for Hydrocarbons and Chemicals. Netherlands: Elsevier Science, 2015. 4) Fire Protection Guide to Hazardous Materials, 14th Edition. United States: National Fire Protection Association, 2010.