101036

1-(2-Pyridylazo)-2-naphthol

indicator grade

• Synonym(e): PAN
• Empirische Formel (Hill-System): C₁₅H₁₁N₃O
• CAS-Nummer: 85-85-8
• Molekulargewicht: 249.27
• Beilstein: 206390
• EG-Nummer: 201-637-9
• MDL-Nummer: MFCD00004071
• UNSPSC-Code: 12171500
• PubChem Substanz-ID: 24846530
• NACRES: NA.47

Eigenschaften

• Qualität: indicator grade
• Qualitätsniveau: 200
• Form: solid
• Methode(n): titration: suitable
• Farbe: green to red, upon chelation with metal; orange-red, as an amorphous solid; yellow, when dissolved in organic solvent
• mp (Schmelzpunkt): 138-141 °C ((280 - 286 °F) - lit); 138-141 °C (lit.)
• ε (Extinktionskoeffizient): ≥15000 at 462-468 nm in methanol at 0.01 g/L; >35,000 at 222-228 nm in methanol at 0.01 g/L; >9,000 at 300-306 nm in methanol at 0.01 g/L
• Eignung: suitable for (Suitable For Use as an Indicator in EDTA Titrations)
• SMILES String: Oc1ccc2ccccc2c1\N=N\c3ccccn3
• InChI: 1S/C15H11N3O/c19-13-9-8-11-5-1-2-6-12(11)15(13)18-17-14-7-3-4-10-16-14/h1-10,19H/b18-17+
• InChIKey: LLYOXZQVOKALCD-ISLYRVAYSA-N

Beschreibung

Allgemeine Beschreibung

1-(2-Pyridylazo)-2-naphthol (PAN) is an orange-colored dye. It can form chelates with metal ions, which makes it a valuable indicator in complexometric titrations.

Anwendung

1-(2-Pyridylazo)-2-naphthol is commonly used as an acid-base indicator. It is also suitable as a spectrophotometric reagent, which can extract metal chelates into an organic solvent.

Sicherheitshinweise

• Lagerklassenschlüssel: 11 - Combustible Solids
• WGK: WGK 3
• Flammpunkt (°F): Not applicable
• Flammpunkt (°C): Not applicable
• Persönliche Schutzausrüstung: dust mask type N95 (US), Eyeshields, Gloves