Customization: | Available |
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CAS No.: | 68-26-8 |
Formula: | C20h30o |
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Vitamin A is a fat-soluble vitamin, organic compound, stable to heat, acid and base, easy to be oxidized, ultraviolet light can promote its oxidative destruction. Vitamin A includes A1 and A2, and A1 is retinol. Vitamin A2 is 3-dehydroretinol, its physiological activity is 40% of vitamin A1. Vitamin A has many physiological functions, such as promoting growth, reproduction, maintaining bone, epithelial tissue, vision and normal secretion of mucosal epithelium, etc. Vitamin A and its analogues have the effect of preventing precancerous lesions. When lacking, it is manifested as growth retardation, dark adaptation and the formation of night blindness. |
Analysis
|
Specification
|
Result
|
Test method
|
Physical Description
|
|
|
|
Appearance
|
Faint Yellow Powder | Faint Yellow Powder |
Visual
|
Odor
|
Characteristic
|
Characteristic
|
Organoleptic
|
Particle size
|
80-100 Mesh
|
90
|
|
Chemical Tests
|
|
|
|
Assay | 99% | 99% |
HPLC
|
Loss on drying
|
5.0% Max
|
2.05%
|
5g/105ºC/2hrs
|
Ash Contents
|
5.0% Max
|
1.20%
|
2g/525ºC/3hrs
|
Residual Solvents
|
50.0 ppm, Only Ethanol
|
<20.0 ppm
|
/
|
Heavy metals
|
5.0 ppm Max
|
<2.0 ppm
|
AAS
|
Lead
|
3.0 ppm Max
|
<1.0 ppm
|
AAS
|
Arsenic
|
3.0 ppm Max
|
<1.0 ppm
|
AAS
|
Microbiology Control
|
|
|
|
Total Bacteria Count
|
1,000cfu/g Max
|
<260cfu/g
|
AOAC
|
Yeast & Mold
|
100cfu/g Max
|
<10cfu/g
|
AOAC
|
Coliform
|
30.0 MPN/g Max
|
<2.0 MPN/g
|
AOAC
|
Conclusion
|
Complies with the standards.
|
||
General Status
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ISO Certificated.
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