ChemicalBook CAS DataBase List Disperse Violet 26

Disperse Violet 26 synthesis

3synthesis methods

Product Name:Disperse Violet 26
CAS Number:6408-72-6
Molecular formula:C26H18N2O4
Molecular Weight:422.43

1,4-Diamino-2,3-diphenoxyanthraquinone is prepared from the 2,3-dichloro compound and phenol by chlorine replacement .

81-42-5 Synthesis

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108-95-2 Synthesis

108-95-2
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6408-72-6
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Yield:6408-72-6 98%

Reaction Conditions:

with pyridine;potassium hydroxide at 198 - 200; for 6 h;Sealed tube;Large scale;Reagent/catalyst;Temperature;

Steps:

1-4; 1-2

CAdd 1500kg of phenol in the enamel kettle of 3000L,1,4-diamino-2,3-dichloroanthraquinone dry product 500kg, 48% potassium hydroxide 600kg, pyridine 5kg, after feeding,Heat the seal to 198-200 C in 3 hoursAnd heat preservation to carry out condensation reaction for 3 hours,Sampling to measure the end point, after the end point is reached, cool down to 158-160 ,At this temperature, add all the distillates, 400kg of 30% liquid caustic soda, and 350kg of water, and finally be cooled to 70-80 DEG C, filter, wash, and dry to obtain 485kg of solvent violet finished product, yield 98%, and content 99.0%.

References:

CN114479508,2022,A Location in patent:Paragraph 0023-0040

81-42-5 Synthesis

81-42-5
207 suppliers
$17.00/5g