Phosphorus, Elemental

CAS RN: 7723-14-0

Property Summary

Autoignition Temperature:
    Red: 260 deg C; White: 30 deg C

Boiling Point:
    280 deg C

Density Specific Gravity:
    1.83 (alpha-form); 1.88 (beta form)

Melting Point:
    44.1 deg C

Molecular Formula:

Molecular Weight:
    123.90 (P4 with atomic weight of P = 30.97376)

    Black: Insoluble in organic solvents; White: Insoluble in water, slightly soluble in benzene, ethanol, and chloroform, soluble in carbon disulfide; Red: Insoluble in water and organic solvents.
    Solubilities in water: one part/300,000 parts water; in abs alc: one g/400 mL; in abs ether: one g/102 mL; in CHCl3: one g/40 mL; in benzene: one g/35 mL; in CS2: one g/0.8 mL. Solubility in oils: one gram phosphorus dissolves in 80 ml olive oil, 60 ml oil of turpentine, about 100 mL almond oil.
    0.33 mg/100 g water at 15 deg C; 2.7 g/100 g benzene at 15 deg C; 89.8 g/100 g carbon disulfide at 10 deg C

Vapor Density:
    Red: 4.77; White: 4.42 (Air = 1)

Vapor Pressure:
    0.026 mm Hg at 20 deg C

    1.69 cP at 50 deg C (liquid)

Find more information on this substance at: PubChem, PubMed