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2,2-diphenyl-1-picrylhydrazyl

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Company Name: Nanjing Duly Biotech Co.,Ltd
Tel: +undefined18013301590
Email: melody@njduly.com
Products Intro: Product Name:DPPH;2,2-Diphenyl-1-picrylhydrazyl;1,1-Diphenyl-2-picrylhydrazyl radical
CAS:1898-66-4
Purity:BR,97% Package:250mg;1g
Company Name: Henan Tianfu Chemical Co.,Ltd.
Tel: +86-0371-55170693 +86-19937530512
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Products Intro: Product Name:1,1-DIPHENYL-2-PICRYLHYDRAZYL
CAS:1898-66-4
Purity:99% Package:25KG;5KG;1KG
Company Name: ATK CHEMICAL COMPANY LIMITED
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Products Intro: CAS:1898-66-4
Purity:98% Package:25G;50G;100G;500G;1KG;10KG;50KG
Company Name: Accela ChemBio Inc.
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Products Intro: Product Name:2,2-Diphenyl-1-(2,4,6-trinitrophenyl)hydrazinyl Free Radical
CAS:1898-66-4
Purity:97% Package:5g Remarks:SY048072
Company Name: Jurong Coupling Biotechnology Co., Ltd.
Tel: 13656108824
Email: coupling278191416@hotmail.com
Products Intro: Product Name:2,2-DIPHENYL-1-PICRYLHYDRAZYL
CAS:1898-66-4
Purity:0.98 Package:5KG;1KG

2,2-diphenyl-1-picrylhydrazyl manufacturers

2,2-diphenyl-1-picrylhydrazyl Basic information
Product Name:2,2-diphenyl-1-picrylhydrazyl
Synonyms:2,2-Diphenyl-1-picrylhydrazyl,1,1-Diphenyl-2-picrylhydrazyl radical, 2,2-Diphenyl-1-(2,4,6-trinitrophenyl)hydrazyl, DPPH;1-diphenyl-2-picrylhydrazyl;1,1-Diphenyl-2-picrylhydrazyl (DPPH);2,2-Diphenyl-1-(2,4,6-trinitrophenyl)-hydrazyl (DPPH);1,1-Diphenyl-2-picrylhydrazyl radical, 2,2-Diphenyl-1-(2,4,6-trinitrophenyl)hydrazyl, DPPH;1,1-Diphenyl-2-picrylhydrazyl Free Radical (contains 10-20% Benzene);[1-(2,4,6-Trinitrophenyl)-2,2-diphenylhydrazino]radical;2,2-Diphenyl-1-(2,4,6-trinitrophenyl)hydrazino radical
CAS:1898-66-4
MF:C18H12N5O6*
MW:394.32
EINECS:217-591-8
Product Categories:Aromatic Hydrazides, Hydrazines, Hydrazones and Oximes;DPPH
Mol File:1898-66-4.mol
2,2-diphenyl-1-picrylhydrazyl Structure
2,2-diphenyl-1-picrylhydrazyl Chemical 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.
λmax515nm(MeOH)(lit.)
Merck 14,3330
BRN 1846081
Stability:Shock Sensitive
EPA Substance Registry SystemHydrazyl, 2,2-diphenyl-1-(2,4,6-trinitrophenyl)- (1898-66-4)
Safety Information
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
MSDS Information
ProviderLanguage
SigmaAldrich English
ALFA English
2,2-diphenyl-1-picrylhydrazyl Usage And Synthesis
Chemical PropertiesDPPH is a common abbreviation for the organic chemical compound 2,2-diphenyl-1-picrylhydrazyl. It is a dark-colored crystalline powder composed of stable free radical molecules. DPPH has two major applications, both in laboratory research: one is a monitor of chemical reactions involving radicals, most notably it is a common antioxidant assay, and another is a standard of the position and intensity of electron paramagnetic resonance signals.
Physical propertiesDPPH has several crystalline forms which differ by the lattice symmetry and melting point. The commercial powder is a mixture of phases which melts at ~130 °C. DPPH-I (m.p. 106 °C) is orthorhombic, DPPH-II (m.p. 137 °C) is amorphous and DPPH-III (m.p. 128–129 °C) is triclinic.
Uses2,2-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.
General Description2,2-diphenyl-1-picrylhydrazyl is a free radical, which shows hydrogen acceptor ability towards antioxidants. It has a strong absorbance at 517 nm. When the radical is lost in exchange for a proton, the absorbance at 517 nm decreases proportionately, resulting in a color change from purple to yellow. Hence, it is commonly used in DPPH assay for measuring the antioxidant activity of different natural samples such as wine, fruits, herbal tea etc.
SafetyThis picrylhydrazyl derivative, also known as DPPH free radical, presents as a black crystalline powder. Store in a refrigerator - this substance is heat sensitive. 1,1-Diphenyl-2-picrylhydrazyl Free Radical is incompatible with oxidizing agents, strong bases and halogens. This chemical is harmful if swallowed. It may cause allergy or asthma symptoms or breathing difficulties if inhaled and an allergic reaction on the skin.
References[1] SIDDARTHA BALIYAN. Determination of Antioxidants by DPPH Radical Scavenging Activity and Quantitative Phytochemical Analysis of Ficus religiosa.[J]. Molecules, 2022. DOI:10.3390/molecules27041326.
[2] G. CLARKE. High Correlation of 2,2-diphenyl-1-picrylhydrazyl (DPPH) Radical Scavenging, Ferric Reducing Activity Potential and Total Phenolics Content Indicates Redundancy in Use of All Three Assays to Screen for Antioxidant Activity of Extracts of Plants from the Malaysian Rainforest[C]//2 1. 2013: 1-10. DOI:10.3390/antiox2010001.
[3] IKUO NAKANISHI Yoshimi S. Electrochemical redox behavior of 2,2-diphenyl-1-picrylhydrazyl radical solubilized by β-cyclodextrin in water[J]. Electrochemistry Communications, 2022, 134: Article 107190. DOI:10.1016/j.elecom.2021.107190.
[4] JAMES BYH BEHRENDORFF. 2,2-Diphenyl-1-picrylhydrazyl as a screening tool for recombinant monoterpene biosynthesis.[J]. Microbial Cell Factories, 2013, 12: 76. DOI:10.1186/1475-2859-12-76.
[5] J. XIE K. M S. Re-evaluation of the 2,2-Diphenyl-1-picrylhydrazyl Free Radical (DPPH) Assay for Antioxidant Activity[J]. Journal of Agricultural and Food Chemistry, 2014, 62 19: 4251-4260. DOI:10.1021/jf500180u.
Tag:2,2-diphenyl-1-picrylhydrazyl(1898-66-4) Related Product Information
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