Phenolphthalein Indicator
3,3-Bis(4-hydroxyphenyl)-1(3H)-isobenzofuranone
Product Code. |
01973 |
Grade |
|
Purity |
CAS No. |
77-09-8 | |
Molecular Formula |
C20H14O4 |
Molecular Weight |
318.33 |
H.S.Code |
2932.20900 |
Shelf Life |
60 Months |
Physical Properties
| Physical state at 20 °C |
Solid |
Colour |
White powder |
Odour |
Odorless |
| Melting point/ Freezing point [°C] |
261 - 263 °C |
Density [g/cm3] |
1.299 |
Solubility in water [% weight] |
Slightly soluble in water |
Packaging
Specification
| Appearance | A white to off white powder |
| pH range (8.2 - 10.0) | Colourless to red-violet |
| Absorption maxima (buffer pH 9.8) | 551 - 554 nm |
| Sensitivity | Passes test |
| Sulphated ash | Max 0.05% |
| Chloride (Cl) | Max 0.01% |
| Sulphate (SO4) | Max 0.01% |
| Loss on dryig (at 110°C) | Max 1% |
Safety Information and Hazard Symbols
Symbol: GHS08
Signal Word: Danger
Hazardous Statement: H341-H350-H361
Precaution Statement: P201-P281-P308 + P313