Product Overview
Phenol Red, Reagent, ACS Grade
Molecular Formula: C19H14O5S
CAS Number: 143-74-8
Molecular Weight: 354.38
Phenol Red, Reagent, ACS is mostly used as a pH indicator that is commonly known due to it being used in pool water testing kits. It is a convenient and easy way for cell biologists to check cell culture pH levels due to its change of color with change of pH - yellow solution below pH 6.8 and fuchsia solution above pH 8.2. As an ACS grade quality reagent, its chemical specifications are the de facto standards for chemicals used in many high-purity applications and typically designate the highest quality chemical available for laboratory use. ScienceLab Reagent ACS grade products meet the toughest regulatory standards for quality and purity.
Synonyms: 4,4-(3H-2,1-Benzoxathiol-3-ylidene)diphenol S,S-Dioxide ; Phenolsulfonphthalein ; PSP
| EST | SPECIFICATION | RESULTS |
|---|---|---|
| Appearance | Bright red to dark red powder | Bright red powder |
| Visual Transition Interval | From pH 6.8 (yellow) to pH 8.2 (red) | From pH 6.8 (yellow) to pH 8.2 (red) |
| Identification | Consistent with standard | Complies |
| Absorption | Absorptivity (1%, 1cm): (pH 6.5) at max. 431.0 nm: 600 - 700(pH 8.2) at max. 558.0 nm: 1100 - 1200 | 6641173 |
| Loss on Drying | ≤ 5% (110 °C/1hr) | 0.87% |
Shipping Information
Tariff No. 3204190000
