USD $1.00-1.00 / Kilogram
USD $1.00-1.00 / Kilogram
USD $9.00-99.00 / Kilogram
USD $9.00-99.00 / Kilogram
USD $9.00-99.00 / Kilogram
USD $9.00-99.00 / Kilogram
USD $9.00-99.00 / Kilogram
USD $9.00-99.00 / Kilogram
USD $9.00-99.00 / Kilogram
characters |
a white or almost white ,crystalline powder |
ir absorption |
ir spectrum of sample is the same with usp |
crs spectrum |
|
uv absorption |
absorptivities at the wavelength of maximum absorbance at about 258nm do not differ by more than 3.0% calculated on the dried basis |
melting range |
92~97°c |
specific rotation |
between +1°and –1° |
loss on drying |
0.5% max |
residue on ignition |
0.2% max |
heavy metals |
0.002% max |
any individual impurity |
0.2% max |
total impurities |
1.0% max |
organic volatile impurities |
meet the requirements |
assay |
98.5~101.0 |