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Method for producing magnesium citrate

A technology of magnesium citrate and citric acid, applied in the directions of pharmaceutical formulations, carboxylate preparation, medical preparations of inactive ingredients, etc., can solve the problems of unpublished patents, and the lack of magnesium citrate, etc.

Inactive Publication Date: 2009-12-02
NANTONG FEIYU FINE CHEM
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  • Abstract
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Problems solved by technology

[0002] At present, there is no detailed information on the method of producing magnesium citrate in China, and there is no published patent. Magnesium citrate products are used as medicine and edible raw materials abroad. At present, heavy metals such as lead are easily brought into the production of magnesium citrate, and General production methods can not get crystallized or powdered magnesium citrate

Method used

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Embodiment Construction

[0005] A kind of method for producing magnesium citrate provided by the present invention is: it utilizes magnesium carbonate or magnesium oxide or magnesium hydroxide as raw material and edible citric acid reaction to make magnesium citrate, through cooling, crystallization, washing with hot deionized water, Obtain magnesium citrate after drying, and its concrete implementation is:

[0006] a. Dissolve citric acid in water and filter. After heating, when the temperature reaches 70°C, gradually add magnesium carbonate, magnesium oxide or magnesium hydroxide, the weight ratio is 0.55 / 0.29 / 0.41:1, and the pH value of the reaction solution is at 5 Between -8;

[0007] b add a small amount of dilute acetic acid;

[0008] c After cooling, crystallization, washing, and drying, sieve according to the particle size requirements to obtain the finished magnesium citrate crystals or powder; if it needs to be made into granules, it can be soaked in warm water with 3% maltodextrin to form...

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Abstract

The invention relates to a method for producing magnesium citrate, which is characterized in that the magnesium citrate is prepared by the reaction of magnesium carbonate or magnesia or magnesium hydrate used as a raw material with edible citric acid through cooling, crystallization, washing with hot deionized water and drying. The magnesium citrate which is the final product can be granular or powdery magnesium citrate, and the quality of the magnesium citrate can reach and exceed the standard of USP30 / NF25. The method can control the lead content to be less than 0.000010 percent on specification, and granular and powdery products can be acquired by sizing according to market demands.

Description

technical field [0001] The present invention relates to a kind of method of producing magnesium citrate. Background technique [0002] At present, there is no detailed information on the method of producing magnesium citrate in China, and there is no published patent. Magnesium citrate products are used as medicine and edible raw materials abroad. At present, heavy metals such as lead are easily brought into the production of magnesium citrate, and General production methods cannot obtain crystalline or powdered magnesium citrate. Contents of the invention [0003] The present invention aims at above production shortcoming, provides a kind of method of producing magnesium citrate, and it utilizes magnesium carbonate or magnesium oxide or magnesium hydroxide to make magnesium citrate as raw material and edible citric acid reaction, through cooling, crystallization, use heat without After washing with ionized water and drying, magnesium citrate is obtained. The technical ch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C59/265C07C51/41A61K9/14A61K31/19A61K47/36A23L1/30A23L33/165
Inventor 姚建飞
Owner NANTONG FEIYU FINE CHEM
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