Cheapest Factory Manufacturer supply high quality vitamin h Bulk biotin powder
Our development depends on the advanced equipment ,excellent talents and continuously strengthened technology forces for Cheapest Factory Manufacturer supply high quality vitamin h Bulk biotin powder, In purchase to expand our international market, we mainly provide our oversea prospects Top quality performance items and assistance.
Our development depends on the advanced equipment ,excellent talents and continuously strengthened technology forces for , Many kinds of different merchandise are available for you personally to choose, you can do one-stop shopping here. And customized orders are acceptable. Real business is to get win-win situation, if possible, we would like to supply more support for customers. Welcome all nice buyers communicate details of merchandise with us!!
Features:
Show the biological activity of ascorbic acid compounds known, is a water-soluble vitamins, fruits and vegetables are abundant. In redox reactions regulate the metabolism of the lack of it can cause scurvy
| ITEM | STANDARD |
| Appearance | White or almost white crystal or crystalline powder |
| Identification | Positive |
| Melting point | 191 ℃ ~ 192℃ |
| pH (5%, w/v) | 2.2 ~ 2.5 |
| pH (2%,w/v) | 2.4 ~ 2.8 |
| Specific optical rotation | +20.5° ~ +21.5° |
| Clarity of solution | Clear |
| Heavy metals | =<0.0003% |
| Assay (as C 6H 8O6, %) | 99.0 ~ 100.5 |
| Copper | =<3 mg/kg |
| Iron | =<2 mg/kg |
| Mercury | =<1 mg/kg |
| Arsenic | =<2 mg/kg |
| Lead | =<2 mg/kg |
| Oxalic acid | =<0.2% |
| Loss on drying | =<0.1% |
| Sulphated ash | =< 0.1% |
| Residual solvents (as methanol) | =< 500 mg/kg |
| Total plate count (cfu/g) | =< 1000 |
| Yeasts & molds (cfu/g) | =< 100 |
| Escherichia. Coli/g | Absence |
| Salmonella/ 25g | Absence |
| Staphylococcus aureus/ 25g | Absence |
