P3532

Phenol Red

Bioreagent, Powder

• Synonym(s): Phenolsulfonphthalein
• Empirical Formula (Hill Notation): C₁₉H₁₄O₅S
• CAS Number: 143-74-8
• Molecular Weight: 354.38
• Beilstein/REAXYS Number: 326470
• EC Number: 205-609-7
• MDL number: MFCD00003552
• UNSPSC Code: 12171500
• PubChem Substance ID: 24898424
• NACRES: NA.47

Properties

• Product Name: Phenol Red, powder, BioReagent, suitable for cell culture
• product line: BioReagent
• Quality Level: 200
• form: powder
• technique(s): cell culture | mammalian: suitable
• color: dark red to dark brown
• visual transition interval: 6.8-8.2, yellow to red
• mp: >300 °C
• solubility: 1 M NaOH: 1 mg/mL
• application(s): diagnostic assay manufacturing
• storage temp.: room temp
• SMILES string: Oc1ccc(cc1)C2(OS(=O)(=O)c3ccccc23)c4ccc(O)cc4
• InChI: 1S/C19H14O5S/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
• InChI key: BELBBZDIHDAJOR-UHFFFAOYSA-N

Description

General description

Phenol Red is a phenolsulfonphthalein compound. It is present as a sulfonated hydroxyquinone in weakly acidic aqueous solutions. In alkaline solutions, the dye forms a hydrophilic dianion (a small, red anion and has a larger conjugated system than the yellow hydroxyquinone).

Application

Phenol red is commonly used as a pH indicator in biology and medicine. It is incorporated into microbiological culture media for the identification of Escherichia coli strains. Its clinical diagnostic applications include investigation of gastric and duodenal ulcers and in the assessment of tear function in ophthalmology. Phenol red is also used as a tracer to assess the permeability of the ileal mucosal membrane and to assess bacterial leakage through root-filling materials in dentistry.

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
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: dust mask type N95 (US), Eyeshields, Gloves