9,10-Dihydro-9,10-dioxo-1-anthracenesulfonic acid

It is derived from benzoyl benzoic acid by ring closure and sulfonation. Operation example Mix 998kg of 20% oleum and 574kg of 65% oleum in the mercury melting pot (the concentration of the mixed oleum is 36.5%), and then add 7.5kg of metallic mercury. Stir and heat to 80-90°C for 5-6h. After the mercury is completely dissolved, add it to the sulfonation pot and cool to below 50°C. After adding mercury salt to the sulfonation pot, add 790 kg of benzoyl benzoic acid and recover 570 kg of anthraquinone at no more than 90°C. Raise the temperature to 120°C and keep it for 3h. After the sulfonation is completed, the sulfonate is diluted in the washing liquid of the previous batch and kept at 100°C for 2h. Filter and wash with 100°C hot water to neutral. The filtrate and part of the concentrated washing liquid are sent to the neutralization pot; the light washing liquid is reserved for the next batch of dilution. The filter cake is used for recovery of anthraquinone, dried, and used for the next batch of sulfonation. The specific operation steps are as follows: add the above-mentioned filtrate to the neutralization pot, adjust the relative density of the solution to 1.075-1.085 with water and heat it to 80°C, and neutralize it with 17-20% ammonia water to a pH of 7. Incubate at 80-85°C for 0.5h. Filter, wash with 800-1000L of hot water at 60°C and blow dry. The filter cake is anthraquinone-1-sulfonic acid ammonium salt. The total yield is 75% (based on anthraquinone).

These products are dye intermediates. Used in the synthesis of 1-aminoanthraquinone.

Molecular Weight:288.28
XLogP3:2.1
Hydrogen Bond Donor Count:1
Hydrogen Bond Acceptor Count:5
Rotatable Bond Count:1
Exact Mass:288.00924453
Monoisotopic Mass:288.00924453
Topological Polar Surface Area:96.9
Heavy Atom Count:20
Complexity:532
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes