o-Cresolphthalein (pH Indicator)
Product Code. |
00887 |
Grade |
|
Purity |
CAS No. |
596-27-0 | |
Molecular Formula |
C2 2H18 O4 |
Molecular Weight |
346.39 |
H.S.Code |
2934.99000 |
Shelf Life |
60 Months |
Physical Properties
| Physical state at 20 °C |
Solid |
Colour |
Light brown |
Melting point/ Freezing point [°C] |
219 - 221 °C |
Packaging
Specification
| Appearance | Light brown powder |
| pH 8.2-9.8 | Colourless to violet red |
| Absorption maxima at pH 11.3 | 565 - 569 nm |
| Specific absorptivity A1%/1cm (at lmax) | Min 1500 |
| Insoluble matter in ethanol | Passes test |
| Loss on dryig (at 135°C) | Max 0.5% |
| Sulphated ash | Max 0.5% |
Safety Information and Hazard Symbols