CAS Number
23647-14-5
Formula
C16H9N2Na3O11S3
Weight
570.42
5-Dihydroxy-3-(4-Sulfophenylazo)-2,7-Naphthalenedisulfonic Acid trisodium salt; SPADNS; p-Sulfophenylazochromotropic Acid trisodium salt
| Solubility 0.1% (dist. Water) | Clear Red Solution |
| Absorptivity 1% / 1cm, | |
| at λ max.508.0 nm | >350 |
| Dye Content (by spectrophotometry) | >80% |
| Loss on Drying (110°C) | <10% |
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