Qingdao Saminchemical.Co,.LTD.
5 1

Ascorbic Acid.Sodium Erythorbate

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Qingdao Saminchemical.Co,.LTD.
[China]

Address
A 902, Haier Road Qingdao Shandong
Phone
86-0532-88960697
Contact name
Daniel Wang

Description

Ascorbic Acid

BP/USP/EP/JP/CP

  ITEM SPECIFICATION RESULT
1. Characteristics White or almost white crystals or crystalline powder White crystalline powder
2. Identification Positive reaction Positive
3. Melting point About 190℃ 191℃
4. PH 2.1 to 2.6 2.42
5. Clarity of solution Clear Clear
6. Color of solution Not more than BY7 Less than BY7
7. Copper Not more than 5ppm Less than 5ppm
8. Heavy metals Not more than 10ppm Less than 5ppm
9. Mercury Less than 0.1mg/kg Conform
10. Lead Less than 3mg/kg Conform
11. Arsenic Not more than 3ppm Less than 3ppm
12. Cadmium(Cd) Less than 1mg/kg Conform
13. Oxalic acid Not more than 0.2% Less than 0.2%
14. Iron Not more than 2ppm Less than 2ppm
15. Loss on drying Not more than 0.4% Less than 0.1%
16. Residue on ignition Not more than 0.1% Less than 0.1%
17. Mesh   40-80mesh Pass
18. Specific rotation +20.5°-+21.5° +21.11°
19. Organic volatile impurities Pass Pass
20. Free of metal perticles Containing or not containing Not containing
21. Assay   99.0%--100.5% 99.91%


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