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Physical state @ 20°C: |
Solid [1] |
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Color: |
Dark red (red P) [3]. Phosphorus occurs in three major forms, white (or yellow), red and black (or violet). |
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Molecular weight (g/mol): |
30.973761(2) [1] |
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Melting point (°C):  |
44.15 [2]
590.45 (white)
956.15 (red) |
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Boiling point (°C): |
277 [2]
826.15 (white) |
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Ignition temperature (°C): |
300 (red) [3] |
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Density (g/cm3): |
1.820 (white)
2.200 (red)
2.690 (black) |
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Critical temperature (°C): |
721 [2] |
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