Tianjin Haitong Chemical Industrial Co., Ltd.  

Product Name: Vitamin C (93% Coated BP2008/USP31) Model NO.: BP2008/USP31 Appearance: Powder Function: Nourishing and Balancing Nutrition Classification: Vitamin Color: White Environmental Protection: Yes Fuction: Improve Memory or Sleep Delivery Time: Within 15days After Receiving Deposit Shelf Time: 2years Trademark: OEM Transport Package: 25kg Carton or Fiberdrum With 2 Layers of PE Liner Origin: China HS Code: 29369000 Product Description Appearance: White or almost white granular passOdor: Odorless or almost odorlessIdentification: Positive ReactionHeavy metals (lead) <10ppmArsenic <3ppmLoss on drying((1g, silica gel, 24h) 0.15% maxResidue on ignition 0.1% maxAssay (Calculated on the dried basis) 92.0- 94.0%Fineness: Through 20 Mesh &ge 98% b. Through 100 Mesh 25%Microbiology Max. 500aerobe/g Max. 100 fungus/gAbsence of E. ColiStorage: Kept in cool, dry and closed placeShelf-life: 2 yearsITEMSTANDARDAppearanceWhiteor almost whitecrystal or crystallinepowderIdentification PositiveMeltingpoint191 °C ~ 192°CpH(5%, w/v) 2.2~ 2.5pH(2%,w/v) 2.4~ 2.8Specificoptical rotation+20.5° ~ +21.5° Clarity of solutionClearHeavymetals≤0.0003%Assay(asC 6H 8O6,%)99.0 ~ 100.5Copper≤3mg/kgIron≤2mg/kgMercury≤1mg/kgArsenic≤2mg/kgLead≤2mg/kgOxalicacid≤0.2%Loss ondrying≤0.1%Sulphatedash≤0.1%Residualsolvents(asmethanol)≤500 mg/kgTotal platecount(cfu/g)≤1000Yeasts &molds(cfu/g)≤100 Escherichia. Coli/gAbsenceSalmonella/ 25gAbsenceStaphylococcusaureus/25gAbsence