diclofenac sodium CAS NO.15307-79-6

1.characteristics

white slightly yellowish crystalline powder, slightly hygroscopic.

2. solubility:

sparingly soluble in water, freely soluble in methanol, ethanol(96%);slightly soluble in acetone; practically insoluble in ether.,

3.identify:

(a) ir-spectrum

(d) reaction of sodium salt

4 acidity alkalinity

6.5-7.5

5.melting point

278-279

6.appearance of solution:

clear

absorption of sodium salt≤0.05

7.related substances:

single impurity max 0.2%

total impurity max 0.5%

8.heavy metal:

max 10ppm

9.loss on drying

max 0.5%

10.assay:

99.0-101.0%