Hydrogen
Content created by REAL intelligence since 2016
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Physical state @ 20°C: |
Gas [2] |
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Color: |
Colourless [2] |
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Luminescence: |
- |
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Luster: |
- |
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Transparancy: |
- |
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Streak: |
- |
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Odor: |
Odorless [1] |
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Molecular weight (g/mol): |
1.00784 [11] |
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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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Density (g/cm3): |
0.00007 [2] |
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Relative vapor density (g/cm3): |
- |
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Molar volume (cm3): |
65 (Critical) [3] |
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Vapor pressure: |
- |
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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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Elastic properties:
Young's modulus (GPa):
Rigidity modulus (GPa):
Bulk modulus (GPa):
Poisson ratio: |
-
-
-
- |
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Hardness:
Mineral hardness:
Brinell hardness (MN/m2):
Vicker hardness (MN/m2): |
-
-
- |
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Reflectivity (%): |
- |
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Refractive index: |
1.000132 (g)
1.12 (l) |
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Velocity of sound (m/s): |
- |
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Surface tension: |
- |
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Solubility: |
Water: 1.6 mg/l (20 °C) [2] |
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Decomposition temperature: |
- |
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Flammability: |
- |
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Flash point: |
-240 °C [2] |
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Auto ignition temperature: |
560 °C [2] |
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flammability or explosive limits (% v/v):
Upper:
Lower: |
77.0 [1]
4 [1] |
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