name | econazole |
cas no | 27220-47-9 |
einecs | 248-341-6 |
molecular forum | c18h15cl3n2o |
assay | 99% |
appearance | white or almost white powder |
grade | medicine grade |
test item |
specification |
results |
characteristics |
white or almost white crystalline powder. |
a white crystal powders |
identification |
c. an intense blue color develops |
c. an intense blue color develops |
solubility |
very slightly soluble in water, soluble in methanol, sparingly soluble in methylene chloride, slightly soluble in alcohol. |
very slightly soluble in water,soluble in methanol, sparingly soluble in methylene chloride, slightly soluble in alcohol. |
melting point |
about 165 °c, with decomposition |
165-166.8°c |
related substances |
impurity a: 0.2%max |
0.04% |
impurity b:0.2%max |
0.06% |
|
impurity c:0.2%max |
0.04% |
|
total: 0.3%max |
0.14% |
|
disregard limit:0.05%max |
0.05%max |
|
loss on drying |
not more than 0.5% ≤0.5% |
0.05% |
chromatographic purity |
not more than 2.0% ≤2.0% |
2.0%max |
sulphated ash |
not more than 0.1% ≤0.1% |
0.02% |
residual solvents |
meet the requirements |
meet the requirements |
assay |
98.5%-101.0% |
100.1% |