Molecular Formula: C27H30O5S |
Molecular Weight: 466.6 |
Properties: browish green crystalline powder, soluble in ethanol; insoluble in water. |
Use: As acid-base indicators. |
PH range |
1.2(red)-2.8(yellow); 8.0(yellow)-9.6(blue) |
Mass absorption eoefficient, L/(cm.g) |
≥71.0 |
Ethanol solubility test |
Qualified |
Residue on ignition(sulphate) |
≤0.3% |