Color: | colorless |
State at 25°C: | gas |
Density (g/cm3): | 0.0002 |
Hardness (Mohs): | No data |
Melting Point (K): | No data |
Boiling Point (K): | 4.2 |
Heat of Fusion (kJ/mol): | No data |
Heat of Vaporization (kJ/mol): | 0.1 |
Heat of Atomization (kJ/mol): | 0 |
Therm. Conductivity (J/m sec K): | 0.15 |
Elec. Conductivity (1/mohm cm): | No data |
Abundance, Solar System: | 9.435 |
Abundance, Earth's Crust: | -2.1 |
Pure Cost ($/100g): | $ 5.20 |
Bulk Cost ($/100g): | |
Source: | Natural gas, air |