USD $10.00-100.00 / Kilogram
USD $11,000.00-12,000.00 / Metric Ton
USD $11,000.00-12,000.00 / Metric Ton
USD $11,000.00-12,000.00 / Metric Ton
USD $11,000.00-12,000.00 / Metric Ton
USD $10.00-10.00 / Kilogram
tetracycline hcl/cas no.:64-75-5
1.cas no.:64-75-5
2 prompt shipment
3.standard:bp2002/usp26/ep4
4.packing:25kg/drum
tem | standard | result | ||||
characteristics | a white or yellowish white powder .odorless or almost.bygroscopic | conforms | ||||
identification | a:b:c the positive reaction. | conforms | ||||
solubility | very soluble in water, insoluble in acetone , chloroform, ether. | conforms | ||||
specific optical rotation | +53.5°~ +59.0° | +58.0° | ||||
acidity of alkalinity | 5.0~7.5 | 6.7 | ||||
impurity a | 2%max | conforms | ||||
impurity c | 3% ~15% | conforms | ||||
any other impurity | not more than the area of the principal peak | conforms | ||||
in the chromatogram obtained with rs(b)5% | ||||||
total other impurity | not more than 3times the area of the principal peak | conforms | ||||
in the chromatogram obtained with rs(b)15% | ||||||
disregard limit | ae of the principal peak in the chromatogram | conforms | ||||
obtained with rs(c)1% | ||||||
loss on drying (pct) | max8.0 | 5.0% | ||||
sulphate | 27.0-31.0% | 28.4%max | ||||
sulphated ash | 1% max | 0.2% | ||||
microcount limit test | nmt 500 col/g | 10 col/g | ||||
microcount-yeast and molds | nmt 10 col/g | conforms | ||||
microcount-escherichia coli | absent | conforms | ||||
microcount-staphy lococcus aureus | absent | conforms | ||||
microcount-pseudo monas | absent | |||||
assay | ≥680i.u./mg (dry) | 687i.u./mg dry 653i.u./mg moist |