| CAS No.: | 69-72-7 |
|---|---|
| Formula: | C7h6o3 |
| Type: | Synthesis Material Intermediates |
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Item |
Specifications |
Results |
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|
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 |
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Identification A |
Melting point158 °C to 161 °C |
160.2°C |
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Identification B |
The IR spectrum of sample complies with salicylic acid CRS |
Complies |
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Appearance of solution |
Solution is clear and colorless |
Solution is clear and colorless |
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Particle size |
100-120mesh |
Complies |
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Related substances |
4-hydroxybenzoic acid |
≤0.1% |
0.03% |
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4-hydroxyisophthalic acid |
≤0.05% |
0.02% |
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Phenol |
≤0.02% |
0.01% |
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Other impurities |
≤0.05% |
0% |
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Total impurities |
≤0.2% |
0.06% |
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Chloride |
NMT100ppm |
<100ppm |
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Sulfate |
NMT200ppm |
<200ppm |
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Heavy metals |
NMT20ppm |
<20ppm |
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Loss on drying |
NMT0.5% |
0.26% |
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Sulphated ash |
NMT0.1% |
0.06% |
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Assay(dried substance) |
ContainsC7H6O399.0%-100.5% |
99.5% |
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Conclusion |
The results conforms with EP 7.0 standards |
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