2,2-Diphenyl-1-picrylhydrazyl (contains 10-20% Benzene) , ≥97.0%(HPLC) , 1898-66-4

Synonym(s):
1,1-Diphenyl-2-picrylhydrazyl radical;2,2-Diphenyl-1-(2,4,6-trinitrophenyl)hydrazyl;DPPH;DPPH, Free Radical - CAS 1898-66-4 - Calbiochem

CAS NO.：1898-66-4

Empirical Formula: C18H12N5O6*

Molecular Weight: 394.32

MDL number: MFCD00007231

EINECS: 217-591-8

PRODUCT Properties

• Melting point: ~135 °C (dec.)(lit.)
• Density: 1.484 g/cm3
• storage temp.: 2-8°C
• solubility: Acetonitrile (Slightly), Chloroform (Slightly), DMSO (Slightly)
• form: Solid
• color: green
• Water Solubility: Soluble in dimethyl formamide, ethanol, chloroform, ether, carbon disulfinde, acetone, oils, carbon tetrachloride, glacial acetic acid and toluene. Insoluble in water.
• λmax: 515nm(MeOH)(lit.)
• Merck: 14,3330
• BRN: 1846081
• Stability: Shock Sensitive
• EPA Substance Registry System: Hydrazyl, 2,2-diphenyl-1-(2,4,6-trinitrophenyl)- (1898-66-4)

Description and Uses

2,2-Diphenyl-1-picrylhydrazyl is used as a sensitive colorimetric free radical scavenger. It serves as a general antioxidant detector. It is utilized to monitor chemical reactions involving radicals as well as a standard of the position and intensity of electron paramagnetic resonance signals. Further, it is employed in the quantitative determination of aliphatic and aromatic thiols by indirect spectroscopy and for photometric determination of tocopherol.

Safety

• Symbol(GHS): GHS02,GHS07,GHS08
• Signal word: Danger
• Hazard statements: H242-H302+H312+H332-H315-H317-H319-H334
• Precautionary statements: P210-P235-P280-P304+P340+P312-P370+P378-P403
• Hazard Codes: Xn
• Risk Statements: 42/43
• Safety Statements: 22-36/37-45
• RIDADR: UN2811
• WGK Germany: 1
• RTECS: MW3250000
• TSCA: Yes
• HazardClass: 6.1
• PackingGroup: II
• HS Code: 29280000