ChemicalBook CAS DataBase List Bromaminic acid

Bromaminic acid synthesis

4synthesis methods

Product Name:Bromaminic acid
CAS Number:116-81-4
Molecular formula:C14H8BrNO5S
Molecular Weight:382.19

1-amino-9,10-dihydro-9,10-dioxoanthracene-2-sulphonic acid

83-62-5
9 suppliers
$139.00/50mg

116-81-4
201 suppliers
$6.00/5g

Yield:116-81-4 96.6%

Reaction Conditions:

with bromine in water at 53 - 55; for 1.5 h;Large scale;Temperature;

Steps:

3.2; 3.3 Example 3
(2) bromination reaction:The concentrated sulfuric acid solution of 1-aminoanthraquinone-2-sulfonic acid was heated to 53-550C,Began slowly dropping bromine 44kg,Bromination reaction,After the dropwise addition, the reaction was continued for about 1.5 hours,Sampling endpoint,After completion of the reaction, the reaction mixture was cooled to room temperature.(3) Dilution:900 kg of pure water was added to the dilution tank,Stirring the bromination solution of the last step slowly add water,Sampling analysis,By adding water to adjust the acid concentration of the solution in 50% -55%Cooling crystallization,Press filter washing,Bromine acid crystals were obtained with the yield of 96.6%.

References:

Nantong City Yan Yan Pigment Chemical Co., Ltd.;Zhao, Juexin;Xu, Liqin;Wu, Haixia CN106083660, 2016, A Location in patent:Paragraph 0012

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82-45-1 Synthesis