82-20-2 Usage
Description
1,5-bis(4-methylphenyl)amino]anthraquinone, also known as Diketopyrrolopyrrole (DPP), is a red organic pigment that is widely used in the production of inks, coatings, and plastics. It is a semi-conductor material that exhibits strong absorption and emission in the visible region of the electromagnetic spectrum. DPP has good thermal stability and offers excellent light fastness, making it a popular choice for various applications in the printing and packaging industry.
Used in Printing and Packaging Industry:
1,5-bis(4-methylphenyl)amino]anthraquinone is used as a pigment for its strong absorption and emission in the visible region of the electromagnetic spectrum, as well as its good thermal stability and excellent light fastness.
Used in Solar Cell Manufacturing:
1,5-bis(4-methylphenyl)amino]anthraquinone is used as a semi-conductor material for its desirable electronic properties in the manufacturing of solar cells.
Used in Organic Light-Emitting Diode (OLED) Manufacturing:
1,5-bis(4-methylphenyl)amino]anthraquinone is used as a semi-conductor material for its desirable electronic properties in the manufacturing of organic light-emitting diodes.
Synthesis Process:
During its synthesis, 1,5-dialkyland 2,6-dialkoxynaphthalenes are converted to 1,5-diketones and 1,5-diaminoanthraquinone, followed by a palladium-catalyzed amination to form the final product, 1,5-bis(4-methylphenyl)amino]anthraquinone.
Check Digit Verification of cas no
The CAS Registry Mumber 82-20-2 includes 5 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 2 digits, 8 and 2 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 82-20:
(4*8)+(3*2)+(2*2)+(1*0)=42
42 % 10 = 2
So 82-20-2 is a valid CAS Registry Number.
82-20-2Relevant articles and documents
Reactions of 1,5-Dichloroanthrachinone with Nucleophiles
Ruediger, Edward H.,Kaldas, Magdy L.,Ghandi. Sham S.,Fedryna, Cristi,Gibson, Martin S.
, p. 1974 - 1978 (2007/10/02)
Reactions of 1,5-dichloroanthraquinone (1) with various nucleophiles were examined to evaluate possibilities for selective substitution. 1-Amino-5-chloroanthraquinone was obtained from 1 by reaction with (a) sodium azide in dimethyl sulfoxide and (b ammonia in the presence of potassium fluoride, but 1 with potassium in ammonia gave 3-chlorobenzoic acid.Conditions were found for preferential substitution in reactions of 1 with (c) 4-toluidine, (d) hexamethylphosphoric triamide, and (e) N-methylformamide.Reagent e is preferred for making 1-chloro-5-(methylamino)anthraquinone, though this compound predominates in mixtures produced when d is used.Potassium hydroxide in 2-ethoxyethanol converts 1 to the corresponding mono- and diethers of 1,5-dihydroxyanthraquinone, while sodium hydrosulfide and 1 give bis(5-chloroanthraquinonyl)sulfide.