|
|
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Physical state @ 20°C: |
Gas [2] |
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Color: |
Colourless [2] |
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Odor: |
Odorless [1] |
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Molecular weight (g/mol): |
1.00794(7) [1] |
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Melting point (°C):  |
-259.193 (H2) [1]
-254.42 (D2) [1]
-252.53 (T2) [1] |
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Boiling point (°C): |
-252.76 (H2) [1]
-249.48 (D2) [1]
-248.11 (T2) [1] |
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Ignition temperature (°C): |
560 [2] |
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Flash point (°C): |
-240 [2] |
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Critical temperature (°C): |
-239.96 (H2) [1]
-234.8 (D2) [1]
-232.55 (T2) [1] |
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Critical pressure (Pa): |
1,293,000 (H2) [3] |
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Explosion limits (vol. %): |
4-77.0 [1] |
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Density (g/cm3): |
0.00007 [2] |
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Molar volume (cm3): |
65 (Critical) [3] |
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Refractive index: |
1.000132 (g)
1.12 (l) |
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Solubility: |
Water: 1.6 mg/l (20 °C) [2] |
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