specifications:
item |
specification (usp26) |
results |
appearance |
white crystals or crystalline powder |
conforms |
specific rotation |
-84.3° to -86.3° |
-85.6° |
chloride(cl) |
not more than 0.050% |
less than 0.050% |
sulfate(so4) |
not more than 0.030% |
less than 0.030% |
iron(fe) |
not more than 30ppm |
less than 30ppm |
heavy metals(pb) |
not more than 15ppm |
less than 15ppm |
chromatographic purity |
individual impurity not more than 0.5% and total impurities not more than 2.0% |
conforms |
loss on drying |
not more than 0.40% |
0.28% |
residue on ignition(sulfated) |
not more than 0.40% |
0.32% |
assay |
98.5% to 101.5% |
99.80% |