No. |
Test |
Specification |
Observations |
1. |
Appearance |
White or almost white, hygroscopic crystalline Powder |
White, hygroscopic crystalline powder |
2. |
Solubility |
Freely Soluble in water, sparingly soluble in ethanol (96 per cent), practically insoluble in methylene chloride. |
Freely soluble in water, sparingly soluble insoluble in methylene chloride. |
3. |
Identification |
||
B) IR |
The infrared absorption spectrum of the sample should be concordant with the spectrum of methyl parahydroxybenzoate CRS. |
Passes |
|
D) Reaction of Solution |
Passes the test |
Passes |
|
4. |
Appearance of Solution |
A 10 % w/v Solution in carbon dioxide-free water clear and not more intensely coloured than BY 6. (Determined on 5.0 gm) |
Complies. |
5. |
PH |
9.5 to 10.5 |
9.63 |
6. |
Related substances by HPLC |
Impurity A: Impurities: Not more than 3.0% |
1.79% |
Unspecified impurities: Not more than 0.5 % |
Not Detected. |
||
Sum of impurities Other than A: not more than 1.0 % |
No Detected. |
||
7. |
Chloride |
Maximum 350 ppm. |
Less than 350 ppm |
8. |
Sulphate |
Maximum 300 ppm. |
Less than 300 ppm |
9. |
Heavy metals |
Maximum 10 ppm. |
Less than 10 ppm |
10. |
Water |
Maximum 5.0 % Determined on 0.500 gm. |
1.12 % |
11. |
Assay by HPLC (as C8H7NaO3) |
95.0 % to 102.0 % |
97.17 % |
UNICORN PETROLEUM INDUSTRIES PVT. LTD.
सर्वाधिकार सुरक्षित.(उपयोग की शर्तें) इन्फोकॉम नेटवर्क प्राइवेट लिमिटेड . द्वारा विकसित एवं प्रबंधित |