Phenol Red sodium salt
SIAL/P4758 - pH indicator dye
Synonym: Phenolsulfonephthalein sodium salt
CAS Number: 34487-61-1
Empirical Formula (Hill Notation): C19H13NaO5S
Molecular Weight: 376.36
EC Number: 252-057-8
MDL Number: MFCD00066901
Linear Formula: C19H13NaO5S
Product Type: Chemical
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: P4758-50G
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: P4758-25G
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: P4758-5G
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: P4758-5G
| εmax | 31.62 at 423 nm in 0.1 M phosphate buffer |
| application(s) | diagnostic assay manufacturing hematology histology |
| color | red to brown |
| form | powder |
| InChI | 1S/C19H14O5S.Na/c20-15-9- |
| InChI key | HKHYOKBQJILTEI-UHFFFAOYSA |
| mp | 285 °C (dec.) (lit.) |
| Quality Level | 200  |
| SMILES string | [Na+].Oc1ccc(cc1)C2(OS(=O |
| solubility | water: 1 mg/mL, opaque, dark red |
| storage temp. | room temp |
| technique(s) | titration: suitable |
| visual transition interval | 6.8-8.2, yellow to red |
| Application: | Phenol Red sodium salt has been used as an indicator during single-guide RNA microinjection into one-cell stage zebrafish embryos. |
| Application: | Suitable for use as a pH indicator. |
| General description: | Phenol Red sodium salt is widely used as a pH indicator. At a pH of 6.4 and below, phenol red solution will have a yellow color. At a pH of 8.2 and above, it will have a red color. It is commonly used in culture media to detect neutral to acidic pH changes. |
| Packaging: | 5, 25, 50 g in glass bottle |
| Hazard Codes | Xi |
| Risk Statements | 36/37/38 |
| Safety Statements | 26-36 |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 3 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| mp | 285 °C (dec.) (lit.) |
| Storage Temp. | room temp |
| UNSPSC | 12171500 |