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1,2-Naphthoquinone-4-Sulfonic Acid Sodium Salt
| CAS No. | 521-24-4 |
| Einecs No. | 207-821-5 |
| HS Code | 2914 7000 |
| Molecular Formula | C10H5O5SNa |
| Molecular Weight | 260.20 g/mol |
| Synonyms |
| Folin's reagent; |
| SNS Eastman-Kodak 1372; |
| 1,2-Naphthoquinone-4-sodiumsulfonate; |
| Sodium1,2-naphthoquinone-4-sulfonate |
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STANDARD SPECIFICATIONS
| Test | Specifications |
| Physical appearance | Orange crystaline powder |
| Assay by HPLC | Min 98 % |
| Melting point | >290oC |
| Colour of 5% solution in water | Clear deep orange solution |
| pH of 5% solution in water | 2.5-3.5 |
| Loss on drying | Max 5.0 % |
| IR | Complies with standard |
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