291099

α-Naphtholbenzein

indicator grade

• Sinônimo(s): 4,4′-(α-Hydroxybenzylidene)di-1-naphthol, p-naphtholbenzein
• Fórmula empírica (Notação de Hill): C₂₇H₁₈O₂
• Número CAS: 145-50-6
• Peso molecular: 374.43
• Beilstein: 2628063
• Número CE: 205-656-3
• Código UNSPSC: 12171500
• ID de substância PubChem: 24857510
• NACRES: NA.47

Propriedades

• grau: indicator grade
• forma: powder
• cor: faintly Faint Brown to Very Dark Brown to Very Dark Red and Black
• pH: 0.0, green; 0.8, yellow; 10.0, blue-green; 8.2, yellow
• pf: 230-235 °C (lit.)
• ε (coeficiente de extinção): ≥50000 at 207-213 nm in methanol at 0.01 g/L
• aplicação(ões): diagnostic assay manufacturing; hematology; histology
• temperatura de armazenamento: room temp
• cadeia de caracteres SMILES: Oc1ccc(\C(c2ccccc2)=C3\C=CC(=O)c4ccccc34)c5ccccc15
• InChI: 1S/C27H18O2/c28-25-16-14-23(19-10-4-6-12-21(19)25)27(18-8-2-1-3-9-18)24-15-17-26(29)22-13-7-5-11-20(22)24/h1-17,28H/b27-24-
• chave InChI: VDDWRTZCUJCDJM-PNHLSOANSA-N

Descrição

Descrição geral

α-Naphtholbenzein is a dye belonging to the Benzein family insoluble in water and soluble in alcohol. α-Naphtholbenzein is primarily used as an indicator for pH range 8.2-10.0 (mostly in acid-base titrations), causing a color change for the neutral solutions turning alkaline. Its applications include detection of bacterial growth in packed food, viable cells, enzymes, ammonia odors in patients with bacterial infection, and many more.

Aplicação

α-Naphtholbenzein has been used as an indicator during sequential injection analysis technique done for acid-base titrations.

Informações de segurança

• Frases de perigo: H413
• Declarações de precaução: P273 - P501
• Classificações de perigo: Aquatic Chronic 4
• Código de classe de armazenamento: 11 - Combustible Solids
• Classe de risco de água (WGK): WGK 2
• Ponto de fulgor (°F): Not applicable
• Ponto de fulgor (°C): Not applicable
• Equipamento de proteção individual: dust mask type N95 (US), Eyeshields, Gloves