D9132

2,2-Diphenyl-1-picrylhydrazyl

• Synonym(s): 1,1-Diphenyl-2-picrylhydrazyl radical, 2,2-Diphenyl-1-(2,4,6-trinitrophenyl)hydrazyl, DPPH
• Empirical Formula (Hill Notation): C₁₈H₁₂N₅O₆
• CAS Number: 1898-66-4
• Molecular Weight: 394.32
• Beilstein: 1846081
• EC Number: 217-591-8
• MDL number: MFCD00007231
• UNSPSC Code: 12352127
• PubChem Substance ID: 57654141
• NACRES: NA.22

Properties

• form: powder
• color: green
• mp: ~135 °C (dec.) (lit.)
• storage temp.: 2-8°C
• SMILES string: [O-][N+](=O)c1cc(c([N]N(c2ccccc2)c3ccccc3)c(c1)[N+]([O-])=O)[N+]([O-])=O
• InChI: 1S/C18H12N5O6/c24-21(25)15-11-16(22(26)27)18(17(12-15)23(28)29)19-20(13-7-3-1-4-8-13)14-9-5-2-6-10-14/h1-12H
• InChI key: HHEAADYXPMHMCT-UHFFFAOYSA-N

Description

General description

2,2-diphenyl-1-picrylhydrazyl is a free radical, which shows hydrogen acceptor ability towards antioxidants. Hence, it is commonly used in DPPH assay for measuring the antioxidant activity of different natural samples such as wine, fruits, herbal tea etc.

Application

• Stable p-radical 2,2-diphenyl-1-picrylhydrazyl (DPPH) adsorbed at the elbows of 22×3 reconstructed Au (111): This study focuses on the single-molecule level investigation of the stable organic radical DPPH, exploring its adsorption and interaction characteristics on a gold surface, which is crucial for understanding metal-free magnetic phenomena at subnanometer scales (R Vranik et al., 2020).

Other Notes

Free radical

Safety Information

• Pictograms: GHS02,GHS08,GHS07
• Signal Word: Danger
• Hazard Statements: H242,H302 + H312 + H332,H315,H317,H319,H334
• Precautionary Statements: P210 - P235 - P280 - P302 + P352 + P312 - P370 + P378 - P403
• Hazard Classifications: Acute Tox. 4 Dermal - Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Eye Irrit. 2 - Resp. Sens. 1 - Self-react. C - Skin Irrit. 2 - Skin Sens. 1
• Storage Class Code: 4.1A - Other explosive hazardous materials
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable