P4758

Phenol Red sodium salt

Powder

• Synonym(s): Phenolsulfonephthalein sodium salt
• Empirical Formula (Hill Notation): C₁₉H₁₃NaO₅S
• CAS Number: 34487-61-1
• Molecular Weight: 376.36
• Beilstein/REAXYS Number: 6260026
• EC Number: 252-057-8
• MDL number: MFCD00066901
• UNSPSC Code: 12171500
• PubChem Substance ID: 24898497
• NACRES: NA.47

Properties

• product name: Phenol Red sodium salt, pH indicator dye
• Quality Level: 200
• form: powder
• technique(s): titration: suitable
• color: red to brown
• visual transition interval: 6.8-8.2, yellow to red
• mp: 285 °C (dec.) (lit.)
• solubility: water: 1 mg/mL, opaque, dark red
• εmax: 31.62 at 423 nm in 0.1 M phosphate buffer
• application(s): diagnostic assay manufacturing; hematology; histology
• storage temp.: room temp
• SMILES string: [Na+].Oc1ccc(cc1)C2(OS(=O)(=O)c3ccccc23)c4ccc([O-])cc4
• InChI: 1S/C19H14O5S.Na/c20-15-9-5-13(6-10-15)19(14-7-11-16(21)12-8-14)17-3-1-2-4-18(17)25(22,23)24-19;/h1-12,20-21H;/q;+1/p-1
• InChI key: HKHYOKBQJILTEI-UHFFFAOYSA-M

Description

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.

Application

Phenol Red sodium salt has been used as an indicator during single-guide RNA microinjection into one-cell stage zebrafish embryos.

Suitable for use as a pH indicator.

Safety Information

• pictograms: GHS07
• signalword: Warning
• hcodes: H315,H335
• pcodes: P261 - P264 - P271 - P280 - P302 + P352 - P304 + P340 + P312
• Hazard Classifications: Skin Irrit. 2 - STOT SE 3
• target_organs: Respiratory system
• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 3
• ppe: dust mask type N95 (US), Eyeshields, Gloves