81-39-0 Usage
Description
Solvent Red 52 is a synthetic organic dye characterized by its blue light red color. It exhibits solubility in water and pyridine, and when dissolved in concentrated sulfuric acid, it appears deep red, with a red precipitation forming upon dilution. This dye is known for its application in the coloring of various materials, particularly in the plastics industry.
Uses
Used in Plastics Industry:
Solvent Red 52 is used as a coloring agent for acetate, polyethylene, and other thermal plastic materials. Its vibrant red hue and solubility properties make it a suitable choice for imparting color to these plastics, enhancing their aesthetic appeal and functionality.
Used in Chemical Synthesis:
In the production of Poly(trimethylene furandicarboxylate), a bio-based polymer with potential applications in packaging and textile industries, Solvent Red 52 plays a crucial role. It is utilized in a method that employs a Zinc catalyst, facilitating the synthesis process and contributing to the development of sustainable and eco-friendly materials.
Preparation
(a) 6-Bromo-3-methyl-3H-naphtho[1,2,3-de]quinoline-2,7-dione or 1-Bromo-4-(N-methylacetamido)anthraquinone and p-Methylaniline condensation; (b)N-(4-(p-toluidino)-9,10-dioxo-9,10-dihydroanthracen-1-yl)-N-methylacetamide closed loop into Anthrapyridone.
Check Digit Verification of cas no
The CAS Registry Mumber 81-39-0 includes 5 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 2 digits, 8 and 1 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 81-39:
(4*8)+(3*1)+(2*3)+(1*9)=50
50 % 10 = 0
So 81-39-0 is a valid CAS Registry Number.
InChI:InChI=1/C24H18N2O2/c1-14-7-9-15(10-8-14)25-19-11-12-20-22-18(13-21(27)26(20)2)16-5-3-4-6-17(16)24(28)23(19)22/h3-13,25H,1-2H3
81-39-0Relevant articles and documents
Environment-friendly synthesis method of anthrapyridone dye
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Paragraph 0021-0027; 0029, (2019/05/15)
The invention relates to an environment-friendly synthesis method of anthrapyridone dye. The method comprises the following steps: (1) adding ethyl acetate, monomethylamine and a phase transfer catalyst sequentially to a pressure vessel, and performing stirring for dissolution so as to obtain a first mixture; (2) heating the first mixture to 80-110 DEG C for a reaction, then performing cooling to40-70 DEG C, proceeding the reaction, performing pressure relief, determining the terminal point of the reaction, and performing cooling and filtration so as to obtain an intermediate A; (3) adding DMF, 1,4-dihydroxy anthraquinone and an auxiliary agent to the intermediate A, performing heating to 130-150 DEG C for a reaction, then performing cooling to 30-40 DEG C, and performing filtration so asto obtain an intermediate B; and (4) adding aromatic amine or alicyclic amine to the intermediate B, and performing a condensation reaction in the presence of boric acid until the terminal point. Through implementation of the environment-friendly synthesis method of anthrapyridone dye, good economic, social and ecologically environmental benefits can be achieved.