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2,2-Diphenyl-1-picrylhydrazyl

2,2-diphenyl-1-picrylhydrazyl Struktur
1898-66-4
CAS-Nr.
1898-66-4
Bezeichnung:
2,2-Diphenyl-1-picrylhydrazyl
Englisch Name:
2,2-diphenyl-1-picrylhydrazyl
Synonyma:
DPPH;DPPH;1,1-DIPHENYL-2-PICRYLHYDRAZYL;1,1-Diphenyl-2-picrylhydrazyl radical;2,2-Diphenylpicrylhydrazyl;2,2-Diphenyl-1-picrylhydrazyl radical(DPPH);hydrazyL;-1-picryL;Diphenypicrylhydrazyl;inhibit,DPPH,Inhibitor
CBNumber:
CB8753025
Summenformel:
C18H12N5O6*
Molgewicht:
394.32
MOL-Datei:
1898-66-4.mol

2,2-Diphenyl-1-picrylhydrazyl Eigenschaften

Schmelzpunkt:
~135 °C (dec.)(lit.)
Dichte
1.484 g/cm3
storage temp. 
2-8°C
L?slichkeit
Acetonitrile (Slightly), Chloroform (Slightly), DMSO (Slightly)
Aggregatzustand
Solid
Farbe
green
Wasserl?slichkeit
Soluble in dimethyl formamide, ethanol, chloroform, ether, carbon disulfinde, acetone, oils, carbon tetrachloride, glacial acetic acid and toluene. Insoluble in water.
maximale Wellenl?nge (λmax)
515nm(MeOH)(lit.)
Merck 
14,3330
BRN 
1846081
Stabilit?t:
Shock Sensitive
EPA chemische Informationen
Hydrazyl, 2,2-diphenyl-1-(2,4,6-trinitrophenyl)- (1898-66-4)
Sicherheit
  • Risiko- und Sicherheitserkl?rung
  • Gefahreninformationscode (GHS)
Kennzeichnung gef?hrlicher Xn
R-S?tze: 42/43
S-S?tze: 22-36/37-45
RIDADR  UN2811
WGK Germany  1
RTECS-Nr. MW3250000
TSCA  Yes
HazardClass  6.1
PackingGroup  II
HS Code  29280000
Bildanzeige (GHS) GHS hazard pictogramsGHS hazard pictogramsGHS hazard pictograms
Alarmwort Achtung
Gefahrenhinweise
Code Gefahrenhinweise Gefahrenklasse Abteilung Alarmwort Symbol P-Code
H242 Erw?rmung kann Brand verursachen. Organische Peroxide Typen C & D Achtung
Warnung
GHS hazard pictogramssrc="/GHS02.jpg" width="20" height="20" /> P210, P220, P234, P280, P370+P378,P403+P235, P411, P420, P501
H315 Verursacht Hautreizungen. Hautreizung Kategorie 2 Warnung GHS hazard pictogramssrc="/GHS07.jpg" width="20" height="20" /> P264, P280, P302+P352, P321,P332+P313, P362
H317 Kann allergische Hautreaktionen verursachen. Sensibilisierung der Haut Kategorie 1A Warnung GHS hazard pictogramssrc="/GHS07.jpg" width="20" height="20" /> P261, P272, P280, P302+P352,P333+P313, P321, P363, P501
H319 Verursacht schwere Augenreizung. Schwere Augenreizung Kategorie 2 Warnung GHS hazard pictogramssrc="/GHS07.jpg" width="20" height="20" /> P264, P280, P305+P351+P338,P337+P313P
H334 Kann bei Einatmen Allergie, asthmaartige Symptome oder Atembeschwerden verursachen. Sensibilisierung der Atemwege Kategorie 1 Achtung GHS hazard pictogramssrc="/GHS08.jpg" width="20" height="20" /> P261, P285, P304+P341, P342+P311,P501
Sicherheit
P210 Von Hitze, hei?en Oberfl?chen, Funken, offenen Flammen und anderen Zündquellenarten fernhalten. Nicht rauchen.
P235 Kühl halten
P280 Schutzhandschuhe/Schutzkleidung/Augenschutz tragen.
P370+P378 Bei Brand: zum L?schen verwenden.
P403 An einem gut belüfteten Ort aufbewahren.

2,2-Diphenyl-1-picrylhydrazyl Chemische Eigenschaften,Einsatz,Produktion Methoden

R-S?tze Betriebsanweisung:

R42/43:Sensibilisierung durch Einatmen und Hautkontakt m?glich.

S-S?tze Betriebsanweisung:

S22:Staub nicht einatmen.
S36/37:Bei der Arbeit geeignete Schutzhandschuhe und Schutzkleidung tragen.
S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn m?glich, dieses Etikett vorzeigen).

Chemische Eigenschaften

DPPH 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.

Physikalische Eigenschaften

DPPH 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.

Allgemeine Beschreibung

2,2-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.

Sicherheit(Safety)

This 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.

Einzelnachweise

[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.

2,2-Diphenyl-1-picrylhydrazyl Upstream-Materialien And Downstream Produkte

Upstream-Materialien

Downstream Produkte


2,2-Diphenyl-1-picrylhydrazyl Anbieter Lieferant Produzent Hersteller Vertrieb H?ndler.

Global( 256)Lieferanten
Firmenname Telefon E-Mail Land Produktkatalog Edge Rate
Nanjing Duly Biotech Co.,Ltd
+undefined18013301590
melody@njduly.com China 2450 58
Henan Tianfu Chemical Co.,Ltd.
+86-0371-55170693 +86-19937530512
info@tianfuchem.com China 21639 55
ATK CHEMICAL COMPANY LIMITED
+undefined-21-51877795
ivan@atkchemical.com China 32820 60
Accela ChemBio Inc.
+1-858-6993322
info@accelachem.com United States 19943 58
Jurong Coupling Biotechnology Co., Ltd.
13656108824
coupling278191416@hotmail.com CHINA 184 58
career henan chemical co
+86-0371-86658258 +8613203830695
factory@coreychem.com China 29815 58
Shaanxi Dideu Medichem Co. Ltd
+86-29-87569266 15319487004
1015@dideu.com China 4088 58
TargetMol Chemicals Inc.
+1-781-999-5354 +1-00000000000
marketing@targetmol.com United States 32002 58
Hubei Ipure Biology Co., Ltd
+8613367258412
ada@ipurechemical.com China 10319 58
Hefei TNJ Chemical Industry Co.,Ltd.
+86-0551-65418671 +8618949823763
sales@tnjchem.com China 34553 58

1898-66-4(2,2-Diphenyl-1-picrylhydrazyl)Verwandte Suche:


  • 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
  • Diphenypicrylhydrazyl
  • 2,2-diphenyl-1-(2,4,6-trinitrophenyl)-hydrazy
  • 2,2-diphenyl-1-(2,4,6-trinitrophenyl)hydrazyl
  • diphenylpicrylhydrazylfreeradical
  • 2,2-Diphenyl-1-picrylhydrazyl(DPPH)
  • 2,2-Diphenyl-1-picrylhydrazyl (contains 10-20% Benzene)
  • 2,2-DIPHENYL-1-PICRYLHYDRAZYL
  • Diphenylpicrylhydrazyl.
  • "2,2-DIPHENYL-1-PICRYLHYDRAZYL,FREE RADICAL, 95%
  • -1-picryL
  • hydrazyL
  • 1,1-Diphenyl-2-picrylhydrazylFreeRadical>
  • 1,1-Diphenyl-2-picrylhydrazyl (DPPH),≥97%
  • 2,2-Diphenyl-1-(2,4,6-trinitrophenyl)hydrazinyl Free Radical
  • DPPH permeates stable free radicals in cells
  • 2,2-Diphenyl-1-Picrylhydrazyl (DPPH) extrapure, 95%
  • 2,2-Diphenylpicrylhydrazyl
  • 1,1-Diphenyl-2-picrylhydrazyl radical
  • DPPH
  • 1,1-DIPHENYL-2-PICRYLHYDRAZYL
  • 2,2-Diphenyl-1-picrylhydrazyl radical(DPPH)
  • inhibit,DPPH,Inhibitor
  • 1,1-Diphenyl-2-picrylhydrazyl Free Radical(contains 10-20% Benzene), ≥ 97.0%
  • DPPH
  • 1898-66-4
  • C18H12N5O6
  • Radical Chemistry
  • Picrylhydrazyl Derivatives
  • Synthetic Reagents
  • Stable Radicals
  • Aromatic Hydrazides, Hydrazines, Hydrazones and Oximes
  • DPPH
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