Colorless needle or flake crystal. Soluble in ethanol, ether, benzene and chloroform, insoluble in water. Ergosterol was dissolved in solvents such as chloroform, ether or cyclohexane, added to a quartz glass flask, and irradiated with ultraviolet light to prepare vitamin D.

Water-soluble

Melting point: 156-158 ° C (lit.)

Specific rotation: -120 º (c = 1, CHC13)

Boiling point: 250 ° C (1.3 mmHg)

Refractive index: -112.5 ° (C = 1, THF)

Sensitivity: Light Sensitive

Merck: 14,3659