Phenol Red AR (pH Indicator)
pH Indicator
Phenolsulfonphthalein
Product Code. |
01976 |
Grade |
|
Purity |
CAS No. |
143-74-8 | |
Molecular Formula |
C19H14O5S |
Molecular Weight |
354.38 |
H.S.Code |
2934.99000 |
Shelf Life |
60 Months |
Physical Properties
| Physical state at 20 °C |
Solid |
Colour |
Dark red powder |
Odour |
Odorless |
| Solubility in water [% weight] |
Slightly soluble in water |
Packaging
Specification
| Appearance | Reddish powder |
| Visual transition range | From pH 6.8 (Yellow) - 8.2 (Red) |
| Absorption maxima at pH 6.5 (l1) | 430 - 435 nm |
| Absorption maxima at pH 8.2 (l2) | 557 - 560 nm |
| Loss on dryig (at 110°C) | Max 5.0% |
| Clarity of solution | Passes ACS test |
Safety Information and Hazard Symbols
Symbol: GHS07
Signal Word: Warning
Hazardous Statement: H315-H319-H335
Precaution Statement: P261-P305 + P351 + P338