Superiority:
USP 34
Hangzhou Dingyan Chem is a leading manufacturer and supplier of chemicals in China.We develop,produce and distribute high quality pharmaceuticals, intermediates, special chemicals and other fine chemicals.
We could give you:
1.Best quality in your requirement
2.Competitive price in China market
3.mature Technical support
4.Professional logistic support
All we want is win-win business. Send yr. inquiries, you will get it!
Details:
Appearance White to almost white powder, hygroscopic
Solubility Freely soluble in water, slightly soluble in alcohol
Indentification A. Liquid chromatographic
B. A Reddish violet color is produced
C. Test for sulfate
Assay(Mirobial, on dry basis) 6500IU/MG min
Specific optical rotation -70?~-90?
PH(2%) 5.0-7.0
PH(0.5%) 5.0-7.5
Loss on drying 7.0% max
Phenylalanine 9.0-2.0%
Sulphated ash 0.75% max
Heavy metals 20ppm max
Pharticle size 99%: 30μM max
90%: 25μM max
75%: 20μM max
Diameter: 8μM max
Storage In well closed, light-resistant&tight conotainers, under 2-35℃, floating range: 3℃