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Phenol Red Powder
The ability of Phenol red Powder as a pH indicator makes it vital in microbiology, cell culture, biochemistry, and environmental science.
Catalog Number: ASC-1005
CAS Number: 143-74-8
MW: 354.38 gr/mol
MF: C19H14O5S
In microbiology, phenol red is frequently used as a pH indicator because it changes color to visually represent pH changes. This characteristic is useful for determining the acidity or alkalinity of solutions, which helps scientists comprehend their chemical environment.
Furthermore, phenol red powder is essential for monitoring enzymatic reactions in biochemical testing. Via color changes in response to pH changes, it gives real time information on the status of the reaction.
Br may be measured in both fresh and saltwater using this dye. In diagnostic labs, phenol red is used to assess kidney function using a colorimetric technique.
| Cat. Number | ASC-1005 |
| CAS Number | 143-74-8 |
| MDL Number | MFCD00003552 |
| Pubchem | 310278714 |
| Molecular Weight | 354.38 gr/mol |
| Molecular Formula | C19H14O5S |
| Storage Temperature | 20 °C |
| Form and Color | Powder / Red to dark red |
| Solution Appearance | 1 % in 95 % ethanol / clear golden solution |
| Solubility | Soluble in water, ethanol, methanol and insoluble in chloroform. |
| pH Transition Range | 6.8 (Brownish yellow) – 7 (Orange) – 8.2 (red violet) |
| Wavelength of Maximum Absorption | 430 – 435 nm (pH 6.5) |
| Wavelength of Maximum Absorption | 557 – 560 nm (pH 8.2) |
| Absorptivity (E1%, 1cm cell) | 600 – 700 (pH 6.5) |
| Absorptivity (E1%, 1cm cell) | 1100 – 1200 (pH 8.2) |
| Loss on Drying | ≤ 5 % |
| Synonym | Phenolsulfonephthalein;3,3-Bis(p-hydroxyphenyl)-2,1-3H-benzoxathiole |
