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 A white or almost white crystalline powder
Solubility Practically insoluble in water,freely soluble in methylene chloride,soluble in acetone, slightly soluble in methanol,dehydrated alcohol and in acetonitrile.Slightly soluble in phosphate buffer at PH values of 2-5.
Identification IR Conforms to Clarithromycin RS
Crystallinity Meets the requirements
Specific optical rotation -94°~-102°
PH 8.0-10.0
Water 2.0% max
Sulphated ash 0.2% max
Heavy metals 20ppm max
Related substances I,A,J,L,B,M,C,D,N,E,F,P,O,K,G,H:1.0%Max
Any other impurity:0.1% max
More than 0.4% impurity: 4 max
Total impurities:3.5% max
Assay(on dry base) 96.0%~102.0%
Residual solvents Ethanol 3000ppm max
Bulk density 0.30g/ml~0.55g/ml
Tapped density 0.55g/ml~0.80g/ml
Particle size 90%min passes through 40mesh