Eriochrome black T(indicator)
| Molecular Formula: C20H12N3NaO7S |
| Molecular Weight: 461.39 |
| Properties: brownish black powder; soluble in hot water, and will turn reddish brown when cooled down. |
| Use: As acid-base indicator; in the test of
water hardness etc. |
| Storage and transport: Closed tight. |
| Sensitivity |
Qualified |
| Water solubility test |
Qualified |
| Ethanol solubility test |
Qualified |
| Residue on ignition(sulphates) |
≤20 |
|
