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Physical state @ 20°C: |
Gas [1] |
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Color: |
Gas: Greenish-yellow [1]
Liquid: Yellow [3] |
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Odor: |
Pungent [3] |
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Molecular weight (g/mol): |
35.4527 [1] |
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Melting point (°C):  |
-101.5 [2] |
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Boiling point (°C): |
-34.04 [2] |
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Critical temperature (°C): |
143.8 [2,6] |
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Critical pressure (MPa): |
7.710832 [6] |
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Density (g/cm3): |
1.56 (Liquid, 1008 hPa , -35 °C) [3]
1.41 (Liquid, 6955 hPa , 20 °C) [3] |
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Relative vapour density (g/cm3): |
2.49 (0 °C) [3] |
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Vapour pressure (Pa): |
365300 (0 °C) [3]
680000 (20 °C) [3]
1340000 (50 °C) [3] |
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Refractive index: |
1.000768 (g) [2]
1.367 (l) [2] |
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Solubility: |
Water: 14.6 g/l (1013 hPa , 0 °C) [3]
7.3 g/l (20 °C) [3] |
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