Item |
Specifications |
Results |
|
Characters |
A white, crystalline powder or white or colorless, acicular crystals, slightly soluble in water, freely soluble in ethanol (96 per cent), sparingly soluble in methylene chloride. |
Complies |
|
Identification A |
Melting point158 °C to 161 °C |
160.2°C |
|
Identification B |
The IR spectrum of sample complies with salicylic acid CRS |
Complies |
|
Appearance of solution |
Solution is clear and colorless |
Solution is clear and colorless |
|
Particle size |
100-120mesh |
Complies |
|
Related substances |
4-hydroxybenzoic acid |
≤0.1% |
0.03% |
4-hydroxyisophthalic acid |
≤0.05% |
0.02% |
|
Phenol |
≤0.02% |
0.01% |
|
Other impurities |
≤0.05% |
0% |
|
Total impurities |
≤0.2% |
0.06% |
|
Chloride |
NMT100ppm |
<100ppm |
|
Sulfate |
NMT200ppm |
<200ppm |
|
Heavy metals |
NMT20ppm |
<20ppm |
|
Loss on drying |
NMT0.5% |
0.26% |
|
Sulphated ash |
NMT0.1% |
0.06% |
|
Assay(dried substance) |
ContainsC7H6O399.0%-100.5% |
99.5% |
|
Conclusion |
The results conforms with EP 7.0 standards |