Method for determining content of ferrous tartrate

Abstract

The invention discloses a method for determining content of ferrous tartrate. The method adopts an ultraviolet visible spectrophotometry with detection wavelength being 410 nm and a reference solution being a ferrous chloride solution. By adopting the method, determination can be directly performed with no adding of a colour-developing agent or other oxidizing solution required, thereby, enabling a determination result to be accurate; the method, with no expensive standard substance required, is simple and feasible, being beneficial to popularization and application; further, with the method adopted, the content of the ferrous tartrate can be accurately and specifically determined so as to find out optimal synthetic reaction conditions of the ferrous tartrate, therefore, the complexing rate of tartaric acid mixtures and ferrous ion is improved, so is the complexing rate of meso-ferrous tartrate therein; for the main active constituent in an anti-salt caking agent is the meso-ferrous tartrate, anti-caking effect of an anti-salt caking agent product is also improved.

Description

technical field [0001] The invention relates to a novel anti-salt antagonist, in particular to a content determination method of the anti-salt antagonist. Background technique [0002] In the technical field of anti-salt caking agent for preventing salt agglomeration, potassium ferrocyanide was generally used as an active ingredient in the past, and its anti-caking effect is good, but potassium cyanide will decompose after heating or encountering acid and alkali, forming toxic Hydrocyanic acid or other substances. In addition, in the chlor-alkali industry, iron ions are difficult to remove during electrolysis. [0003] In order to solve the above problems, a new anti-salt caking agent is gradually adopted at present, and meso ferrous tartrate is the active ingredient of the new anti-salt caking agent, and its chemical formula is Fe[C 4 h 4 o 6 ] 2 , it is a new anti-salt caking agent. Meso-ferrous tartrate is non-toxic, and the iron ions are easily removed in the early ...

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Problems solved by technology

However, when detecting meso-ferrous tartrate, the complexing ability of o-phenanthroline and ferrous iron is greater than that of meso-tartaric acid and ferrous iron, so this method cannot be used to determine meso The complexing ability of ferrous tartrate; In the above-mentioned method 2, as the Chinese patent application that the patent application number is 201010131773.5, its principle is to titrate with EDTA solution, take sulfosalicylic acid as indicator, and become bright yellow with solution color as The titration end point, the judgment of the titration end point is greatly affected by human factors, and the ferrous ions will be oxidized into ferric ions in the air during the titration process, which affects the judgment of the titration end point, that is, the meso-tartaric acid cannot be accurately determined Ferrous content

[0009] If liquid chromatography is used, standards are required, but pure ferrous tartrate, especially meso ferrous tartrate, is expensive and not easy to obtain

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