Detection method for content of condensed impurities in alkylsilanol

A technology of alkyl silanol and impurity content, applied in chemical analysis by titration method, can solve the problems of inaccurate judgment results, low detection efficiency, high risk, etc., saving time and economic costs, and improving research and development efficiency Effect

Inactive Publication Date: 2019-02-01
CHANGZHOU HEQUAN PHARMA CO LTD
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Problems solved by technology

Since trimethylsilanol is easy to condense and dehydrate to produce hexamethyldisiloxane under the high temperature condition of the gas phase inlet, if the gas phase

Method used

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[0017] The technical solutions of the present invention will be clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

[0018] Add enough Ketosolver or other suitable solvent to the titration cup of the Karl Fischer volumetric titrator to make it cover the electrode, and titrate with KF titrant Composite5K to the potential end point, so that the water in it is completely consumed. If there is no special requirement, the drift value should be less than or equal to 30. After the instrument is stable, accurately weigh about 0.2g of trimethylsilanol sample (the sample amount can be adjusted appropriately), enter "weight (mg)" and the corresponding sample information, and titrate

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Abstract

The invention discloses a detection method for the content of condensed impurities in an alkylsilanol. The detection method comprises the following steps of: step1, adding a sufficient amount of Ketosolver into the titration cup of a Karl volumetric method titrator to submerge an electrode, and titrating with Karl-Fischer titrant Composite5K to a potentiometric end point so as to completely consume moisture therein; and step2, precisely weighing a proper amount of the alkylsilanol sample into the titration cup and titrating to the end point after an instrument is stabilized, so as to completely consume the moisture therein. The detection method can quickly and accurately detect the content of the condensed impurities in the sample after the alkylsilanol reagent is unsealed for a period oftime, can greatly save the time cost and the economic cost of detecting the impurities in the sample, and can improve the overall research efficiency.

Description

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Claims

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Application Information

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Owner CHANGZHOU HEQUAN PHARMA CO LTD
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