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Method for identifying aldehyde oil methanol solution

A methanol solution and solution technology, which is applied in the direction of material analysis by observing the influence of chemical indicators, and analysis by making materials undergo chemical reactions, can solve problems such as no product identification methods, and achieve rapid identification and avoid interference. Effect

Active Publication Date: 2020-08-14
佛山市南海北沙制药有限公司
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  • Abstract
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Problems solved by technology

Aldehyde oil methanol solution is a methanol solution of a mixture of dimethylaminoacrolein methyl ether, the main component is dimethylaminoacrolein methyl ether, dimethylaminoacrolein methyl ether is currently in the international standard, national standard and industry There is no identification method for this product in the standard

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  • Method for identifying aldehyde oil methanol solution
  • Method for identifying aldehyde oil methanol solution
  • Method for identifying aldehyde oil methanol solution

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Embodiment Construction

[0017] The claimed technical solution of the present invention will now be described in further detail in conjunction with the accompanying drawings and specific embodiments.

[0018] see figure 1 As shown, the method for identifying aldehyde oil methanol solution in this embodiment includes carrying out aldehyde group identification and ethylenic bond identification to the test sample. In this embodiment, the preparation of the test sample is as follows: take 10 ml of aldehyde oil solution, add 10 ml of methanol , and shake well to obtain the test sample.

[0019] see figure 2 As shown, the identification of the aldehyde group in this embodiment comprises the following steps: 1 mL of the test sample solution is taken, and 3 mL of 2,4-dinitrophenylhydrazine test solution is added to the test sample solution, and the two are fully shaken and left to stand If the test sample solution has an orange-yellow precipitate, it can be judged that the test sample has passed the aldehy...

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Abstract

The invention discloses a method for identifying an aldehyde oil methanol solution. According to the method, a test sample is subjected to aldehyde group identification and olefinic bond identification, and if the test sample passes the aldehyde group identification and olefinic bond identification at the same time, it is judged that the test sample is an aldehyde oil methanol solution meeting therequirements; and if the test sample cannot pass aldehyde group identification and olefinic bond identification at the same time, it is judged that the test sample does not meet the requirements.

Description

technical field [0001] The invention relates to the technical field of medicament identification, in particular to a method for identifying aldehyde oil methanol solution. Background technique [0002] Aldehyde oil methanol solution is a dark red transparent liquid and flammable. It uses vinyl ether, dimethylformamide, and phosphorus trichloride as raw materials to prepare aldehyde oil by addition reaction with kerosene as a solvent, and dilutes it with anhydrous methanol , Extract and purify with petroleum ether to obtain pharmaceutical intermediates. [0003] Aldehyde oil methanol solution is a key intermediate raw material in the production process of sulfadiazine bulk drug. Aldehyde oil methanol solution is a methanol solution of a mixture of dimethylaminoacrolein methyl ether, the main component is dimethylaminoacrolein methyl ether, dimethylaminoacrolein methyl ether is currently in the international standard, national standard and industry There is no identification...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/78G01N21/82
CPCG01N21/78G01N21/82
Inventor 黄升黄志云刘明威邱伟杰袁莉莉
Owner 佛山市南海北沙制药有限公司
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