Preparation method of analytically pure zinc bromide

A technology of zinc bromide and zinc oxide, applied in the direction of zinc halide, etc., can solve the problems of unsatisfactory pharmaceutical industry, complex process steps, high impurity content, etc., and achieve the effect of easy operation control, simple process steps and low impurity content

Inactive Publication Date: 2016-01-27
TIANJIN CHEM REAGENT RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

In this new way that makes it easier than previous methods but still produces good quality ZnBBr with fewer impurities compared to older processes like HBO3.

Problems solved by technology

Technological Problem: Current methods for producing an analyte-rich material involve complex processes that require multiple reagents or solvents at different stages during production. These technical problem addressed by this patented technology include poor quality materials produced due to contamination from other substances present within the raw product itself.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A preparation method for analyzing pure zinc bromide, the preparation method steps are:

[0016] (1) 1Kg hydrobromic acid (50wt%) is added in the reactor with stirring and heated, the hydrobromic acid solution is heated to 80 DEG C, under constant stirring;

[0017] (2) Slowly add 0.5Kg of zinc oxide into hydrobromic acid, when the pH of the reaction material is 7, stop adding zinc oxide, filter the reaction solution, heat and concentrate, the temperature is 230 ° C, the relative density is controlled at 19 ° Be, cooled Crystallized and dried to obtain analytically pure zinc bromide.

Embodiment 2

[0019] A preparation method for analyzing pure zinc bromide, the preparation method steps are:

[0020] (1) 1.5Kg hydrobromic acid (50wt%) is added in the reactor with stirring and heated, the hydrobromic acid solution is heated to 75 DEG C, under constant stirring;

[0021] (2) Slowly add 0.75Kg of zinc oxide into the hydrobromic acid, when the pH of the reaction material is 7.5, stop adding zinc oxide, filter the reaction solution, heat and concentrate, the temperature is 250 ° C, the relative density is controlled at 20 ° Be, cooled Crystallized and dried to obtain analytically pure zinc bromide.

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Abstract

The invention relates to a preparation method of analytically pure zinc bromide. The method comprises the following steps: (1) hydrobromic acid is added into a reactor with a stirrer, and is heated, such that a hydrobromic acid solution is heated to 80 DEG C; under stirring, (2) zinc oxide is slowly added into hydrobromic acid; when the pH value of the reaction material is 7, zinc oxide addition is stopped; the reaction liquid is filtered, heated and concentrated under a temperature of 230-250 DEG C, wherein a relative density is controlled at 19-20 DEG Be; cooling and crystallization are carried out; and spin-drying is carried out, such that the analytically pure zinc bromide is obtained. According to the analytically pure zinc bromide preparation method, zinc oxide is subjected to a reaction with hydrobromic acid, such that zinc bromide is produced. With the method, high-purity zinc bromide can be obtained. The preparation method is simple, and the operation is easy to control.

Description

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Claims

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Application Information

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Owner TIANJIN CHEM REAGENT RES INST
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