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Method for confirming acid silver acetylide components

A determination method and technology of acetylene, applied in the direction of chemical analysis by titration, can solve the problems of insoluble in water, limitation, etc., and achieve the effect of simple and convenient operation, good repeatability and accurate measurement

Inactive Publication Date: 2018-05-08
NORTHWEST INST OF NUCLEAR TECH
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Problems solved by technology

However, acidic silver acetylene is a solid particle, which is difficult to dissolve in water and common solvents, which limits the use of the Volhard method. Therefore, it is necessary to find a solvent for dissolving acidic silver acetylene and prepare an acidic silver acetylide solution for subsequent titration of silver content.

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  • Method for confirming acid silver acetylide components

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with specific embodiments.

[0025] The embodiment is implemented through the following process:

[0026] 1. Configure the standard solution in Volhard's method

[0027] a) Prepare a standard solution of ammonium thiocyanate with a concentration C of 0.025mol / L: accurately weigh 0.95g of ammonium thiocyanate (high-quality pure), add it to a volumetric flask containing 500ml of deionized water, and obtain thiocyanate after complete dissolution Ammonia standard solution.

[0028] b) The preparation concentration C is 0.015mol / L ammonium ferric sulfate indicator: accurately weigh 20g ferric ammonium sulfate (analytical purity), add it to a volumetric flask containing 500ml deionized water, and obtain an ammonium ferric sulfate indicator after complete dissolution.

[0029] 2. Preparation of acidic silver acetylene solution to be tested

[0030] c) Preparation of acid acetylene silver Ag + Solution: accurately weigh...

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Abstract

The invention belongs to the field of chemical component analysis, relates to a method for confirming acid silver acetylide components and in particular to a titration method for the content of silverof acid silver acetylide. The method comprises the following steps: dissolving acid silver acetylide to be tested into a salpeter solution; confirming the content of Ag<+> in the step I by using a Volhard method; confirming the ratio of silver acetylide to silver nitrate in the acid silver acetylide according to the content of Ag<+> in the step II, thereby obtaining acid silver acetylide components to be tested. By adopting the method, the difficulty the acid silver acetylide is hard to dissolve in a common solvent is solved, confirmation of the acid silver acetylide components is achieved, abase is provided for instructing synthesis processes of the acid silver acetylide, a novel way is provided of silver content titrimetric analysis on other similar substances which are hard to dissolve, and the method has the characteristics of being simple and convenient to operate, accurate in testing, good in repeatability, free of external complex condition, and the like.

Description

Technical field [0001] The invention belongs to the field of chemical composition analysis, and relates to a method for determining the composition of acidic silver acetylene, in particular to a titration method for the content of acidic silver acetylene. Background technique [0002] Acidic silver acetylene is a double salt of silver acetylene and silver nitrate. According to the amount of complexed silver nitrate, there are acidic silver acetylenes with different compositions. The ratios of common acidic silver acetylene to silver nitrate are 1:1, 1:2, 1:6, etc. Among them, the ratio of 1:1 silver acetylene-silver nitrate (Ag 2 C 2 ·AgNO 3 ) As a detonating agent, it can be detonated with a high-voltage pulsed light source to achieve the purpose of large-area synchronous detonation. Determining the composition of acidic silver acetylene is an important basis for the qualification of the detonator. In silver acetylene-silver nitrate (Ag 2 C 2 ·AgNO 3 In the process of the synt...

Claims

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Application Information

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IPC IPC(8): G01N31/16
CPCG01N31/16
Inventor 徐海斌裴明敬张德志隋亚光王等旺胡华权陈博
Owner NORTHWEST INST OF NUCLEAR TECH
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