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Grayish Crystalline Powder Medicine Intermediates 4-Aminophthalic Acid CAS 5434-21-9
Specifications:
| Product name | 4-Aminophthalic acid |
| CAS No. | 5434-21-9 |
| Appearance | Grayish crystalline powder |
| Assay (HPLC) Impurity (as 3-isomer) Total assay(4-APA plus 3-APA) | 4-APA≥90% 3-APA: 010% ≥98% |
| Melting point | 342-345 |
| Loss on drying | ≤0.3% |
| Ignition Residue | ≤0.5% |
| Heavy metals | ≤20ppm |
| Iron | ≤50ppm |
| Sodium | ≤2000ppm |
Description:
4-Aminophthalic acid, 98%MIN
CAS No.: 5434-21-9
EINECS No.: 226-596-4
Molecular formula: C8H7NO4
