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Method for reducing copper ions in methylene blue solution by using calcium phosphate

A technology of methylene blue and copper ions, which is applied in organic chemistry and other fields, can solve the problems that the copper ion purification research has not yet been reported, and achieve the effects of easy industrial production, simple equipment, and improved production efficiency

Inactive Publication Date: 2015-06-03
SHANDONG UNIV OF TECH
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Problems solved by technology

And so far, the purification research of copper ion in the methylene blue solution has not been reported yet.

Method used

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Embodiment 1

[0017] (1) Dissolve methylene blue in 60 ml of deionized water to prepare methylene blue solution, then add diammonium hydrogen phosphate to prepare solution A, dissolve calcium nitrate in 60 ml of deionized water to prepare solution B, and make methylene blue, phosphoric acid The concentration of diammonium hydrogen and calcium nitrate is 0.053, 0.3 and 0.5 mole per liter, adjust the pH value of A and B solution to 10 with ammoniacal liquor respectively;

[0018] (2) Add solution B dropwise to solution A which is constantly being stirred. After the dropwise addition is completed, stir and react at 60°C for 4 hours, and then let stand and age for 12 hours;

[0019] (3) Filter and wash the solution obtained from the reaction, and dissolve the obtained methylene blue residue in deionized water to obtain a methylene blue solution.

[0020] Measured by the atomic absorption spectrophotometer of Japan Shimadzu Company AA-6601F model, the copper ion concentration in the methylene bl...

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Abstract

The invention provides a method for reducing copper ions in a methylene blue solution by using calcium phosphate, and belongs to the field of production technology of chemical raw materials. The method comprises the following steps: firstly dissolving methylene blue in deionized water to obtain the methylene blue solution, adding diammonium hydrogen phosphate in the methylene blue solution to prepare an A solution, dissolving calcium nitrate in deionized water to prepare a B solution, and regulating the molar ratio of the diammonium hydrogen phosphate to the calcium nitrate in the A and B solutions to 3:5; then, regulating the pH values of the A and B solutions by using ammonia water, dropwise adding the B solution into the A solution while stirring continuously, stirring to react for 4 hours at 60-80 DEG C after dropwise adding the B solution, stewing to age for 12 hours, finally filtering and washing the solution obtained in the reaction, and dissolving the obtained methylene blue residue on sieve in deionized water to obtain the methylene blue solution with low concentration of copper ions. The method is simple in process, low in raw material cost and easy to achieve industrial production.

Description

technical field [0001] The invention provides a method for reducing copper ions in a methylene blue solution by using calcium phosphate, and belongs to the technical field of chemical raw material production. Background technique [0002] Methylene blue has been widely used in the treatment of diseases such as malaria, methemoglobinemia and urinary tract infection, and it has been found in clinical trials that methylene blue has a significant inhibitory effect on the aggregation of tall proteins in patients with Alzheimer's disease. Especially in the treatment of chronic diseases, methylene blue is taken for a long time. The raw materials used to prepare methylene blue include copper-containing compounds, and the resulting products often contain copper ions at a high concentration. If taken for a long time, it will have a serious impact on human health. Therefore, the purification method of copper ions in methylene blue solution is extremely important. So far, the purifica...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D279/20
CPCC07D279/18
Inventor 李成峰葛筱璐李国昌丁锐杜庆洋
Owner SHANDONG UNIV OF TECH
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