Sell Chondroitin Sulfate

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Appearance: Fine powder
Color: White
Identification(IR spectro.3800-1000cm-1) :positive
Light Absorbance: NMT0.2 (260nm, 0.4% in water) , NMT0.15(280nm, 0.4% in water) , NMT0.05(420nm, 5% in water)
Loss on Drying: NMT 9%
Specific Optical rotation: between 20o and -30o
pH: 5.5-7.5
Vilosity: 0.2-0.4
Assay: NLT 90.2%
Ash(sulphate ash) :20-30%
Nitrogen: 3.2%
Sulphate: 6.0%
Calcium: NMT0.5%
Heave metals: < 10ppm
Endotoxins: < NMT 0.2ppb
Toxicity: Absent
Total Yeast and Mold: < NMT 400cfu/g