
| a-Naphthol extrapure 500GM | |||
| 11005SG500 | 964200211FZ | ||
| Extrapure | 9642002 | ||
| 90-15-3 | 120374 | ||
| C10H8O | June 2026 | ||
| 144.17 | May 2031 | ||
| Sr.No. | Test | Result | Specification | Method Reference |
|---|---|---|---|---|
| 1 | Description | Pale yellow when freshly crystallised. becomes pink to gray on storage. | Colourless to pale yellow when freshly crystallised. becomes pink to gray on storage. | |
| 2 | Solubility | Complies | Slightly soluble in water. Freely soluble in alcohol. | |
| 3 | Melting point | 96°C | 95° - 97°C | |
| 4 | Sulphated ash | 0.06% | 0.1% max | |
| 5 | Assay | 99.65% | Min. 98.5% |
| Tested By (Chemist - Quality Control) | Approved By (Head - Quality Control) |