114537

Phenol Red sodium salt

ACS reagent, Dye content 90 %

• Synonym(s): Phenolsulfonephthalein sodium salt
• Empirical Formula (Hill Notation): C₁₉H₁₃NaO₅S
• CAS Number: 34487-61-1
• Molecular Weight: 376.36
• Beilstein: 6260026
• EC Number: 252-057-8
• MDL number: MFCD00066901
• UNSPSC Code: 12171500
• PubChem Substance ID: 24847180
• NACRES: NA.47

Properties

• grade: ACS reagent
• Quality Level: 200
• form: powder or crystals
• composition: Dye content, 90%
• clarity of soln: passes test
• technique(s): titration: suitable
• color: red to very dark red
• visual transition interval: 6.8-8.2, yellow to red; 6.8-8.2, yellow to red
• mp: 285 °C (dec.) (lit.)
• λmax: 423 nm
• ε (extinction coefficient): ≥19000 at 422-426 nm in methanol; ≥900 at 256-269 nm in methanol
• 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

Application

Phenol Red has been used for preparation of phosphate buffer saline (PBS)-with phenol red for microfluidic assay for simultaneous culture of multiple cell types. It has also been used for horseradish peroxidase-phenol red (HRP-PR) H₂O₂ (hydrogen peroxide) detection assay to identify redox cycling compounds.

Suitable for use as a pH indicator.

Biochem/physiol Actions

Phenol Red is a pH indicator which changes color from yellow to red.

Safety Information

• Pictograms: GHS07
• Signal Word: Warning
• Hazard Statements: H315,H335
• Precautionary Statements: P261 - P264 - P271 - P280 - P302 + P352 - P304 + P340 + P312
• Hazard Classifications: Skin Irrit. 2 - STOT SE 3
• Target Organs: Respiratory system
• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 3
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves