Phenol Red Sodium Salt CAS: 34487-61-1 | MF: C19H13NaO5S | MW: 376.36, Part Number I10556, Buy now for reliable and Reproducible results from Tristains indicators at Chemical World.
Phenol red sodium salt is a synthetic dye derived from phenolphthalein. It appears as a dark red crystalline powder. Phenol red sodium salt is soluble in water, ethanol, and ether.Its chemical formula is C19H13NaO5S. Phenol red sodium salt is also known as Phenolsulfonephthalein sodium salt. In acidic conditions, it turns yellow, while in basic conditions, it turns red. It is used as a pH indicator in various applications.
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Application :
- Phenol red sodium salt is a chemical compound commonly used as a pH indicator.
- It is commonly used in cell culture media to visually monitor the pH of the medium.
- In some biological staining techniques, it can be used to visualize certain cellular structures or metabolic activities.
- It can also be used in microbiology to differentiate between different types of bacteria based on their metabolic activity and subsequent pH changes in the growth medium.
Benefits :
- Provides accurate measurements of pH changes in solutions
- Versatile and stable
- Cost-effective
| Alternate Names | Phenolsulfonephthalein Sodium Salt |
| Application | Phenol Red Sodium Salt is a water soluble pH indicator commonly employed in cell biology laboratories as a cell tissue culture pH marker |
| CAS Number | 34487-61-1 |
| Molecular Weight | 376.36 |
| Molecular Formula | C19H13NaO5S |
Phenol Red sodium salt is a water soluble pH indicator used in the 6.8 (yellow) to 8.2 (red) range. It is commonly employed in cell biology laboratories as a cell tissue culture pH marker. Under normal conditions, phenol red added to the growth medium will have a pink-red color. Usually 15 mg/l is used to produce this effect. If problems arise, such as dying cells or overgrowth of contaminants, this will cause a change in pH resulting in a change in indicator color. This color change is an indication that the medium needs to be replaced. Additionally, Phenol Red could potentially be useful as a differentiation factor.
| Appearance | Crystalline or powder |
| Physical State | Solid |
| Solubility | Soluble in water yielding a dark red solution (25 mg/ml), alcohol (4 mg/ml), methanol, ethanol (200 mg/ml), and aqueous alkali hydroxides or carbonates with formation of a red colored solution. |
| Storage | Store at room temperature |
| Melting Point | 285° C (lit.)(dec.) |
| pK Values | pKa: 7.9 |
SAFETY INFORMATION
| WGK Germany | 3 |
| PubChem CID | 23686673 |
| Merck Index | 14:7247 |
| MDL Number | MFCD00066901 |
| EC Number | 252-057-8 |
| Beilstein Registry | 6260026 |
| SMILES | C1=CC=C2C(=C1)C(OS2(=O)=O) (C3=CC=C(C=C3)O)C4=CC=C(C=C4)[O-].[Na+] |
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