ests |
specifications |
results |
characters |
white to off-white crystalline powder with a characteristic sulfide-like order
|
complies |
identification |
ir:similar to reference standard |
complies |
appearance of solution |
clear and colorless |
complies |
specific rotation |
-127°to -132° |
-131° |
loss on drying |
≤0.5% |
0.06% |
sulphated ash |
≤0.2% |
0.03% |
heavy metals |
≤0.002% |
complies |
ph |
2.0 to 2.6 |
2.3 |
related compouds |
|
undetected undetected |
assay(anhydrous) |
98.0% to 101.5% |
100.2% |
storage :store in cool and dry palce. keep away from strong light ,high temperature.
usage: used as pharmaceutical intermediates
transportation:by express delivery (by ems,dhl,tnt & fedex) or sea & air shipping.
shipment term: exw, fob, cif, cnf
sample: at any time to provide (lowest price & highest quality)