114529

Phenol Red

ACS reagent

• Synonym(s): Phenolsulfonphthalein
• Empirical Formula (Hill Notation): C₁₉H₁₄O₅S
• CAS Number: 143-74-8
• Molecular Weight: 354.38
• Beilstein: 326470
• Número de EC: 205-609-7
• Número MDL: MFCD00003552
• ID de la sustancia en PubChem: 24847179
• NACRES: NA.47

Properties

• grado: ACS reagent
• Nivel de calidad: 200
• formulario: powder
• transparencia de la solución: passes test
• technique(s): titration: suitable
• visual transition interval: 6.8-8.2, yellow to red
• λmax: 360 nm; 557 nm (2nd)
• ε (extinction coefficient): ≥10000 at 288-294 nm in H₂O; ≥55000 at 555-561 nm in H₂O; ≥7000 at 357-363 nm in H₂O
• application(s): diagnostic assay manufacturing; hematology; histology
• temp. de almacenamiento: 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

Descripción general

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 that has a larger conjugated system than the yellow hydroxyquinone).

Aplicación

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 the investigation of gastric and duodenal ulcers and 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.
Phenol Red has been used for the preparation of phenol red gavage meal for measurement of gastric emptying in rats.

Suitable for use as a pH indicator.

Acciones bioquímicas o fisiológicas

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

Safety Information

• pictogramas: GHS07
• Palabra de señalización: Warning
• Frases de peligro: H315 - H335
• Consejos de prudencia: P261 - P264 - P271 - P280 - P302 + P352 - P304 + P340 + P312
• Clasificaciones de peligro: Skin Irrit. 2 - STOT SE 3
• Órganos de actuación: Respiratory system
• Código de clase de almacenamiento: 11 - Combustible Solids
• WGK: WGK 3
• Punto de inflamabilidad F: Not applicable
• Punto de inflamabilidad C: Not applicable
• Equipo de protección personal: dust mask type N95 (US), Eyeshields, Gloves