257621

2,2-Di(4-tert-octylphenyl)-1-picrylhydrazyl, free radical

• Synonyme(s) : 2,2-Bis[4-(1,1,3,3-tetramethylbutyl)phenyl]-1-(2,4,6-trinitrophenyl)hydrazinyl, 2,2-Di(4-tert-octylphenyl)-1-picrylhydrazyl, DPPH
• Formule empirique (notation de Hill): C₃₄H₄₄N₅O₆
• Numéro CAS: 84077-81-6
• Poids moléculaire : 618.74
• Numéro MDL: MFCD00012032
• Code UNSPSC : 12352005
• ID de substance PubChem : 24855599
• Nomenclature NACRES : NA.22

Propriétés

• Forme: solid
• Niveau de qualité: 100
• Pf: 171 °C (dec.) (lit.)
• λmax: 531 nm
• Température de stockage: 2-8°C
• Chaîne SMILES: CC(C)(C)CC(C)(C)c1ccc(cc1)N([N]c2c(cc(cc2[N+]([O-])=O)[N+]([O-])=O)[N+]([O-])=O)c3ccc(cc3)C(C)(C)CC(C)(C)C
• InChI: 1S/C34H44N5O6/c1-31(2,3)21-33(7,8)23-11-15-25(16-12-23)36(26-17-13-24(14-18-26)34(9,10)22-32(4,5)6)35-30-28(38(42)43)19-27(37(40)41)20-29(30)39(44)45/h11-20H,21-22H2,1-10H3
• Clé InChI: CLOCMRDQPYXVKP-UHFFFAOYSA-N

Description

Description générale

2,2-Di(4-tert-octylphenyl)-1-picrylhydrazyl (DPPH) is classified as a “stable” free radical since it has a long shelf life and can be synthesized and stored under normal laboratory conditions.

Application

2,2-Di(4-tert-octylphenyl)-1-picrylhydrazyl can be used as a calibration standard in electron paramagnetic spectroscopy (EPR) and as a radical scavenger in polymers. It is also used as an efficient reagent in the “DPPH calorimetric assay” to study radical scavenging activities of diverse chemical compounds, mostly of phenolic nature. When DDPF reacts with antioxidant molecules, its color changes from deep purple to pale yellow, which allows the spectrophotometric determination of the antioxidant activity.

Informations sur la sécurité

• Code de la classe de stockage: 11 - Combustible Solids
• Classe de danger pour l'eau (WGK): WGK 3
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable