Audited Supplier
Coated 93%
50-81-7
C6h8o6
Paper
Normal
2years
Antioxidant
Chemosynthesis
White or Almost White Granular Pass
Odorless or Almost Odorless
Kept in Cool, Dryand Closed Place
T/T
OEM
25kg Carton or Fiberdrum With 2 Layers of PE Liner
Bp2008/Usp31
China
2936270010
Product Description
Appearance: White or almost white granular pass
Odor: Odorless or almost odorless
Identification: Positive Reaction
Heavy Metals (lead) <10ppm
Arsenic <3ppm
Loss on drying((1g, silica gel, 24h) 0.15% max
Residue on ignition 0.1% max
Assay (Calculated on the dried basis) 92.0- 94.0%
Fineness: Through 20 Mesh &ge 98% b. Through 100 Mesh 25%
Microbiology Max. 500 aerobe/g Max. 100 fungus/g
The absence of E. Coli
Storage: Kept in cool, dry and closed place
Shelf-life: 2 years
Odor: Odorless or almost odorless
Identification: Positive Reaction
Heavy Metals (lead) <10ppm
Arsenic <3ppm
Loss on drying((1g, silica gel, 24h) 0.15% max
Residue on ignition 0.1% max
Assay (Calculated on the dried basis) 92.0- 94.0%
Fineness: Through 20 Mesh &ge 98% b. Through 100 Mesh 25%
Microbiology Max. 500 aerobe/g Max. 100 fungus/g
The absence of E. Coli
Storage: Kept in cool, dry and closed place
Shelf-life: 2 years
| ITEM | STANDARD |
| Appearance | White or almost white crystal or crystalline powder |
| Identification | Positive |
| Melting point | 191 °C ~ 192°C |
| 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 |
