USD $10.00-10.00 / Gram
USD $25.10-28.30 / Gram
USD $10.00-10.00 / Gram
USD $25.10-28.30 / Gram
USD $25.10-28.30 / Gram
USD $10.00-10.00 / Gram
USD $25.10-28.30 / Gram
USD $2.00-10.00 / Kilogram
USD $10.00-10.00 / Gram
items |
specification |
results |
appearance |
white or almost white crystalline powder |
confirms |
|
practically insoluble in water, freely |
|
|
soluble in methylene chloride, soluble |
|
|
in methanol, sparingly soluble in alcohol. |
|
identification |
ir |
confirms |
melting range, °c |
148.0~152.0 |
148.0~150. |
specific rotation |
-1.0o~+1.0o |
0o |
loss on drying, % |
≤ 0.50 |
0.1 |
residue on ignition, % |
≤ 0.10 |
0.06 |
heavy metals, % |
≤ 0.002 |
< 0.002 |
chromatographic purity, % |
≤ 2.0 |
confirms |
residue solvent, % |
|
|
acetoacetate |
≤ 0.50 |
0.3 |
dimethyl sulfoxide |
≤ 0.50 |
0 |
bacteria |
not more than 10 per g |
confirms |
mold & yeast |
none-detected |
confirms |
assay, % |
98.0~102.0 |
99.2 |