291099

α-Naphtholbenzein

indicator grade

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

Propiedades

• grado: indicator grade
• Nivel de calidad: 100
• Formulario: powder
• técnicas: titration: suitable
• color: 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
• mp: 230-235 °C (lit.)
• ε (coeficiente de extinción): ≥50000 at 207-213 nm in methanol at 0.01 g/L
• aplicaciones: diagnostic assay manufacturing; hematology; histology
• temp. de almacenamiento: room temp
• cadena 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-
• Clave InChI: VDDWRTZCUJCDJM-PNHLSOANSA-N

Descripción

Descripción general

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.

Aplicación

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

Información de seguridad

• Frases de peligro: H413
• Consejos de prudencia: P273 - P501
• Clasificaciones de peligro: Aquatic Chronic 4
• Código de clase de almacenamiento: 11 - Combustible Solids
• Clase de riesgo para el agua (WGK): WGK 2
• Punto de inflamabilidad (°F): Not applicable
• Punto de inflamabilidad (°C): Not applicable
• Equipo de protección personal: dust mask type N95 (US), Eyeshields, Gloves