Vitamin D3 NEW

Density 1.0± 0.1g /cm3

Boiling point 496.4±24.0 °C at 760 mmHg

Melting point 83-86 °C(lit.)

Molecular formula C27H44O

Molecular weight 384.638

Flash point 214.2±15.1 °C

Precision mass 384.339203

PSA 20.23,000

LogP 9.72

Appearance crystal

Vapor pressure 0.0±2.9 mmHg at 25°C

Refractive index 1.523

Storage condition

3 This product should be sealed in a cool and dry place and kept away from light.

stability

Colorless crystal. Oxidized and deactivated in humid air for a few days, the pure crystals only deteriorated slightly after being stored in brown vacuum ampoules in the refrigerator for one year. Vitamin D3 is generally more stable than vitamin D2. D3 is found in human and most animal tissues and is abundant in foods such as cod liver oil, liver, roe, milk, cream and egg yolks. The human skin contains 7-dehydrocholesterol, the precursor of vitamin D3, which can be converted into D3 by sunlight or ultraviolet irradiation, so more sun exposure can prevent vitamin D deficiency.