Carbon
Physical properties
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Physical state @ 20°C:
Solid [3]
Color:
Can exist as either black graphite [3], (known as charcoal in the powdered form) or as the colourless gem diamond. Color is variable and tends toward pale yellows, browns, grays, and also white, blue, black, reddish, greenish and colorless.
Odor:
Odorless as graphite [3]
Molecular weight (g/mol):
12.0107(8) [1]
Melting point (°C):
4492 (Triple point) [2]
3800 (graphite) [3]
Boiling point (°C):
3825 (Sublimation) [2]
Density (g/cm
3
):
3.514 (Diamond) [1]
2.2 (Graphite, 20 °C) [3]
Refractive index:
Diamond: 2.4173 [2]
Solubility:
Water: Insoluble (20 °C) (graphite) [3]