Hydroxynaphthol blue indicator 5GM | |||
10787SG005 | 854794302AU | ||
Indicator | 8547943 | ||
63451-35-4 | 70220 | ||
C20H11N2Na3O11S3 | January 2021 | ||
620.48 | December 2025 | ||
Sr.No. | Test | Result | Specification |
---|---|---|---|
1 | Description | dark blue powder. | Dark blue powder. |
2 | Solubility | Passes | Soluble in water. |
3 | Absorptivity(1%, 1cm, on dry basis) at 646 nm in pH 12.0 | 344 | Min. 300 |
4 | Loss on drying,105°C | 3.37% | 5.0% max |
5 | Suitability as metal ion indicator (for Ca) | Passes | Passes test |
Tested By (Chemist - Quality Control) | Approved By (Head - Quality Control) |