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Technical Data Sheet HYDROXYNAPHTHOL BLUE
Compound Information
Product Name:
HYDROXYNAPHTHOL BLUE
CAS No.:
63451-35-4
Molecular Formula:
C20H15N2NaO11S3
Molecular Weight:
578.51
Revision Date:
2026-04-16
Analytical Information
| Tests | Specifications |
|---|---|
| Description | Dark blue powder. |
| Grade | Indicator |
| Solubility | 340g/l |
| Absorptivity(1%, 1cm, on dry basis) at 646 nm in pH 12.0 | Min. 300 |
| Loss on drying,105°C | 5.0% max |
| Suitability as metal ion indicator (for Ca) | Passes test |
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