Superiority:
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 powder, insipid, innocent
Assay ≥98%
Degree of Substitution 2.8-10.5
Clarity of solution 50%(w/v) water solution is clear
Identification(IR) same absorption bands with USP Hydroxypropyl Betadex RS
Loss on Drying ≤10%
Conductivity 10%(w/v) water solution ≤200µS/cm
Propylene oxide ≤1ppm
Propylene glycol ≤2.5%
Sum of Other Impurities ≤1%
Betadex ≤1.5%
Residue on Ignition ≤0.2%
Heavy Metal ≤20ppm
chloride ≤0.05%
TAMC(cfu/g) ≤1000
TYMC(cfu/g) ≤100
Salmonella/E. Coli (cfu/g) Absent