Chemical Name: Salicylic acid
CAS No.: 69-72-7
Molecular Formula: C7H6O3
Molecular weight: 138.12
Chemical Structure:
Appearance: White to off-white crystalline powder
Chemical Name: Salicylic acid
CAS No.: 69-72-7
Molecular Formula: C7H6O3
Molecular weight: 138.12
Chemical Structure:
Appearance: White to off-white crystalline powder
| Item | Specification |
| Characters | A white ,crystalline powder or white or colorless, acicular crystals, slightly soluble in water, freely soluble in ethanol (96 percent),sparingly soluble in methylene chloride |
| Identification | A. Melting point 158℃ to 161℃ |
| B.The IR spectrum of sample complies with salicylic acid CRS | |
| C.Positive | |
| Appearance of solution | Solution is clear and colorless |
| Related substances | Impurity A: 4-hydroxybenzoic acid ≤0.1% |
| Impurity B:4-hydroxyisophthalic acid ≤0.05% | |
| Impurity C：Phenol ≤0.02% | |
| Any other impurities ≤0.05% | |
| Total impurities ≤0.2% | |
| Chloride | NMT 100ppm |
| Sulfate | NMT 200ppm |
| Heavy metals | NMT 20ppm |
| Loss on drying | NMT 0.5% |
| Sulphated ash | NMT 0.1% |
| Assay (dried substance) | Contains C7H6O3 99.0%~100.5% |
