2475-44-7 Usage
Description
Disperse blue 14 is also known as transparent blue GP. Its chemical name is 1,4-bis(methylamino)anthraquinone. It is a blue-black powder, insoluble in water, soluble in methanol, ethanol, glacial acetic acid, nitrobenzene, pyridine and toluene. It is reddish brown in concentrated sulfuric acid.
Preparation
1,4-Dihydroxyanthracene-9,10-dione?by under pressure,?With aqueous Methanamine?and sodium hydrosulfite or zinc processing. Leuco sulfate nitrobenzene oxidation or thermal
Properties and Applications
bright blue. Blue powder. Soluble in acetone, glacial acetic acid, the difficulties, pyridine and toluene. The strong sulfuric acid to red light brown. Used for polyester, vinegar and polyamide fiber dyeing, also can be used to transfer printing. And is fit for manufacturing fireworks fireworks hair color components. Can also be used in such of surface colouring and plastic.
Standard(Polyamide)
Ironing Fastness
Light Fastness
Persperation Fastness
Washing Fastness
Fading
Stain
Fading
Stain
Fading
Stain
ISO
4
2-3
4-5
4-5
2-3
4
3-4
Standard(Polyamide)
Ironing Fastness
Fading
Stain
ISO
4
Purification Methods
Purify the anthraquinone by thin-layer chromatography on silica gel plates, using toluene/acetone (3:1) as eluent. The main band is scraped off and extracted with MeOH. The solvent is evaporated and the dye is dried in a drying pistol [Land et al. J Chem Soc, Faraday Trans 1 72 2091 1976]. It crystallises from n-butanol with m 221-222o and has max 539 and 644nm (EtOH). [Beilstein 14 H 198, 14 III 440, 14 IV 459.]
Check Digit Verification of cas no
The CAS Registry Mumber 2475-44-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,4,7 and 5 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 2475-44:
(6*2)+(5*4)+(4*7)+(3*5)+(2*4)+(1*4)=87
87 % 10 = 7
So 2475-44-7 is a valid CAS Registry Number.
InChI:InChI=1/C16H14N2O2/c1-17-11-7-8-12(18-2)14-13(11)15(19)9-5-3-4-6-10(9)16(14)20/h3-8,17-18H,1-2H3
2475-44-7Relevant articles and documents
Preparation method of low-pollution diarylamino anthraquinone type solvent blue 78 dye
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Paragraph 0024-0040, (2021/04/17)
The invention provides a preparation method of a low-pollution diarylamino anthraquinone type solvent blue 78 dye. The preparation method comprises the following steps: sequentially adding Nmethylimidazole and 4bromobutyric acid into methanol, slowly dropwise adding a 50% sodium hydroxide solution while stirring at the temperature of 40 DEG C and 60 DEG C, and adjusting the pH value to be larger than 9, adding fluoboric acid, stirring for 4 hours and 6 hours, and removing methanol under reduced pressure to obtain a first mixture; heating the first mixture to 40 DEG C and 60 DEG C, adding 1, 4-dihydroxy anthraquinone, 1, 4-dihydroxy anthraquinone leuco body and monomethylamine, continuously heating to 50 DEG C and 65 DEG C, reacting to the end point, cooling to 30 DEG C and 45 DEG C, and performing suction filtration to obtain a filter cake and filtrate; and washing and soaking the filter cake with hot water, collecting washing and soaking liquid and filtrate, distilling and recycling, washing the filter cake with hot water to be neutral, and drying to obtain the solvent blue 78 dye. The solvent blue 78 dye [delta]C obtained by adopting the preparation method disclosed by the invention is brilliant 2.0 and has a pressure value which is less than 0.3, and the product quality can meet the application requirements of high-end customers.
