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A method for determining the content of 3-ethyl-2-methyl-2-(3-methylbutyl)-1,3-oxazolidine

A technology of methylbutyl and oxazolidine, which is applied in the field of determination of 3-ethyl-2-methyl-2--1, can solve the problems of few researches on detection methods and the like

Active Publication Date: 2015-12-23
宁波谱尼测试技术有限公司
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Problems solved by technology

[0011] There are few studies on its detection methods in the open literature

Method used

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  • A method for determining the content of 3-ethyl-2-methyl-2-(3-methylbutyl)-1,3-oxazolidine
  • A method for determining the content of 3-ethyl-2-methyl-2-(3-methylbutyl)-1,3-oxazolidine
  • A method for determining the content of 3-ethyl-2-methyl-2-(3-methylbutyl)-1,3-oxazolidine

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Experimental program
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Embodiment 1

[0045] Determination of ZoldineMS-Plus Sample Content

[0046] 1. Analysis steps

[0047] Take the ZoldineMS-Plus product as the test sample, add 10mL of water to a 100mL volumetric flask, and accurately weigh 53.01mg of the sample (use a pipette to quickly transfer the sample to the volumetric flask, cover the stopper and weigh), and make it fully react , and dilute to 100 mL with methanol.

[0048] Take 2 mL of constant volume solution, add 200 mg of anhydrous magnesium sulfate powder, oscillate and mix to remove water, take the supernatant and filter it through a 0.45 μm organic filter membrane, collect the filtrate for qualitative analysis by gas chromatography-mass spectrometry.

[0049] Take another 2mL constant volume solution and place it in a 20mL headspace sampling bottle for quantitative analysis by measuring the content of isoheptanone by headspace gas chromatography.

[0050] 2. Chromatography and mass spectrometry parameters

[0051] Gas chromatography-mass sp...

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Abstract

The invention discloses a method for determining the content of 3-ethyl-2-methyl-2-(3-methylbutyl)-1,3-oxazolidine. The 3-ethyl-2-methyl-2-(3-methylbutyl)-1,3-oxazolidine is prone to be subjected to hydrolysis reaction with water, thus generating N-ethylethanolamine and isoheptanone. The method comprises the following steps: taking a right amount of sample, adding a small amount of water to serve as reactant, sufficiently reacting to generate N-ethylethanolamine and isoheptanone, and diluting to the specified volume with organic solvent; taking one part of the solution, dewatering with anhydrous magnesium sulfate, filtering through a film, and performing qualitative analysis on the hydrolysis products N-ethylethanolamine and isoheptanone with a gas chromatograph-mass spectrometer; and taking the other part of the sample, analyzing with a headspace gas chromatograph, and determining the content of the isoheptanone to quantitatively calculate the content of the 3-ethyl-2-methyl-2-(3-methylbutyl)-1,3-oxazolidine. The method is simple and quick, is accurate in qualitative and quantitative determination, and can satisfy requirements of detection.

Description

technical field [0001] The present invention relates to a kind of method for determining the content of 3-ethyl-2-methyl-2-(3-methylbutyl)-1,3-oxazolidine, in particular to a method using gas chromatography-mass spectrometry to identify, A method for quantitatively determining the content of 3-ethyl-2-methyl-2-(3-methylbutyl)-1,3-oxazolidine by headspace gas chromatography. Background technique [0002] 3-Ethyl-2-methyl-2-(3-methylbutyl)-1,3-oxazolidine, CAS No. 143860-04-2, English name 3-ethyl-2-methyl-2-( 3-methylbutyl)-1,3-oxazolidine, EMOD for short, molecular formula C 11 h 23 NO, relative molecular weight 185.31, structural formula as follows: [0003] [0004] 3-Ethyl-2-methyl-2-(3-methylbutyl)-1,3-oxazolidine chemical structure [0005] This product is a transparent liquid, light yellow, with a faint smell, boiling point 209°C, relative density 0.872g / mL (25°C), auto-ignition temperature 196°C. The substance can slowly react with moisture in the air, and can...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/88
Inventor 宋薇
Owner 宁波谱尼测试技术有限公司
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