Chemical name : 1,3-Naphthalenedisulfonic acid, 7-hydroxy-8-(phenylazo)-, disodium salt
CAS no : 1936-15-8
EINECS Number : 217-705-6
Molecular Formula : C16H10N2Na2O7S2
PRODUCT SPECIFICATION
| TEST | SPECIFICATION |
| Appearance (Form) | Powder |
| Appearance (Color) | Orange |
| Solubility 0.1% (Dist. Water) | Clear orange Solution |
| Absorption maximum (in Water) | 476 – 481nm |
| Absorptivity 1%/ 1cm,(in Water) | > 440 |
| Peak ratio | 0.88 – 0.95 |
| Dye content (by Spectrophotometry) | > 90% |
| Loss On Drying at 110 degrees C (1hr) | < 10% |
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