Method for detecting content of solvent in alkyl bromobenzene product
A technology for alkyl bromobenzenes and solvent content, applied in measuring devices, instruments, scientific instruments, etc., can solve problems such as not representing the actual content of components and not being able to fully utilize production and other issues
Inactive Publication Date: 2021-05-04
山东盛华科技创业园有限公司
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However, the test results of gas chromatography cannot represent the actual content of each component, especially for solvents, the test results are very different from the actual content, and cannot be fully utilized in production.
[0003] The traditional solvent content is to heat the sample under vacuum at a certain temperature, and measure the volatile content of the sample to confirm the solvent content, which has great limitations.
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[0016] A method for detecting the content of the solvent in the alkyl bromobenzene products is that after sampling, the sample is detected with a gas chromatograph, and the mole percentage of the solvent carbon is detected to be A%, then the solvent is in the content of the alkyl bromobenzene. The weight percentage is: A×B÷[A×B+(100-A)×C÷D]×100%, where B is the molar mass of the solvent, C is the molar mass of alkyl bromobenzene, and D is an alkane The parameters of the gas chromatograph used to detect the carbon atoms contained in the base bromobenzene are as follows:
[0017] Instruments used: Agilent gas chromatograph 7820 model, hydrogen flame ionization detector;
[0018] Chromatographic column: HP-5 (30m*0.32mm*0.25μm); split ratio 50:1
[0019] Detection conditions: column temperature: 100°C, retention time: 2min, rate: 10°C / min;
[0020] Final temperature: 260℃, stay for 12min;
[0021] Vaporization chamber temperature: 280℃, detector temperature: 280℃;
[0022] In...
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Abstract
The invention discloses a method for detecting the content of a solvent in an alkyl bromobenzene product. A sampled sample is detected by using a gas chromatograph. If the molar percentage content of carbon is A%, the weight percentage of the solvent in the alkyl bromobenzene is A*B / [A*B+(100-A)*C / D]*100%, in the formula, B is the molar mass of the solvent, C is the molar mass of the alkyl bromobenzene, and D isa carbon atom contained in alkyl bromobenzene. The molar percentage content of the solvent carbon in the product is detected by using the gas chromatograph, the solvent content is calculated according to the molar percentage content of the carbon, and the detection method has characteristics of simpleness, rapidness and high accuracy.
Description
technical field [0001] The invention belongs to the technical field of chemical product purity detection methods, in particular to a detection method for solvent content in alkyl bromobenzene products. Background technique [0002] In alkyl bromobenzene products, it is often necessary to determine the residual amount of solvent in the product. However, the detection results of gas chromatography cannot represent the actual content of each component, especially for solvents, the detection results are very different from the actual content and cannot be fully utilized in production. [0003] The traditional solvent content is to heat the sample under vacuum at a certain temperature, and measure the volatile content of the sample to confirm the solvent content, which has great limitations. Therefore, it is necessary to study a detection method that can quickly confirm the solvent content in alkyl bromobenzene, which has a wide range of guiding significance for production. SU...
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IPC IPC(8): G01N30/02G01N30/68G01N30/86
CPCG01N30/02G01N30/68G01N30/8675
Inventor 韩春林刘晓盖竹巍
Owner 山东盛华科技创业园有限公司