114529

Phenol Red

ACS reagent

• Sinônimo(s): Phenolsulfonphthalein
• Fórmula empírica (Notação de Hill): C₁₉H₁₄O₅S
• Número CAS: 143-74-8
• Peso molecular: 354.38
• Beilstein: 326470
• Número CE: 205-609-7
• Número MDL: MFCD00003552
• Código UNSPSC: 12171500
• ID de substância PubChem: 24847179
• NACRES: NA.47

Propriedades

• grau: ACS reagent
• Nível de qualidade: 200
• Formulário: powder
• transparência da solução: passes test
• técnica(s): titration: suitable
• visual transition interval: 6.8-8.2, yellow to red
• solubilidade: water: 0.77 g/L at 100 °C
• λmax: 360 nm; 557 nm (2nd)
• ε (coeficiente de extinção): ≥10000 at 288-294 nm in H₂O; ≥55000 at 555-561 nm in H₂O; ≥7000 at 357-363 nm in H₂O
• aplicação(ões): diagnostic assay manufacturing; hematology; histology
• temperatura de armazenamento: room temp
• cadeia de caracteres SMILES: 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
• chave InChI: BELBBZDIHDAJOR-UHFFFAOYSA-N

Descrição

Descrição geral

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).

Aplicação

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.[1]

Suitable for use as a pH indicator.

Ações bioquímicas/fisiológicas

Phenol Red is a pH indicator which changes color from yellow to red.[2]

Informações de segurança

• Pictogramas: GHS07
• Palavra indicadora: Warning
• Frases de perigo: H315,H335
• Declarações de precaução: P261 - P264 - P271 - P280 - P302 + P352 - P304 + P340 + P312
• Classificações de perigo: Skin Irrit. 2 - STOT SE 3
• Órgãos-alvo: Respiratory system
• Código de classe de armazenamento: 11 - Combustible Solids
• Classe de risco de água (WGK): WGK 3
• Ponto de fulgor (°F): Not applicable
• Ponto de fulgor (°C): Not applicable
• Equipamento de proteção individual: dust mask type N95 (US), Eyeshields, Gloves