Complaint
Vitamin D3 is a fat-soluble vitamin, is used as a precursor for calcium, phosphorus metabolic hormones, it has close relationship with sunshine, so also called the "sunshine vitamin", Vitamin D3 is fat-soluble, insoluble in water, can dissolve in fat or fat solvents, high temperature and oxidation in neutral and alkaline solution.
Analysis of certificate:Testing Item | Standard | Result |
Vitamin D3 Content | ≥500,000IU/g | 506,800IU/g |
Appearance | White or almost white crystals | Complies |
Identification | EP/USP | Positive |
Specific optical rotation | +105.0°- +112.0° | +109.6° |
Loss on drying | 5.0% max | 4.1% |
As | 1ppm max | 0.1ppm |
Heavy metals(pb) | 20ppm max | 3ppm |
Granularity | 1. 100%go through the sieve of 0.85mm (US standard mesh sieve No.20) 2. More than 85% go through the sieve of 0.425mm (US standard mesh sieve No.40) | 1. 100% 2. 97.6% |
