Method for detecting primary amine in anti-aging agents TMQ
A detection method and technology for an anti-aging agent are applied in the detection field of primary amines, which can solve the problems of inability to measure the content of primary amines, inability to completely detect the content of primary amines, etc., and achieve the effects of simple operation, simple instrument and high accuracy.
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Embodiment 1
[0041] Weigh 0.1044g of analytically pure aniline and dissolve it in 30ml of 2N hydrochloric acid in a 100ml volumetric flask. Then, the solution was diluted with methanol to the mark of the volumetric flask as an aniline standard solution.
[0042] Use a pipette to transfer 1ml, 2ml, 3ml, 4ml, 5ml, 6ml of aniline standard solution into six 100ml volumetric flasks, and then add 2N hydrochloric acid solution 39ml, 38ml, 37ml, 36ml, 35ml, 34ml in sequence. Add 20ml of DMAB solution to the solution, then add methanol to fill most of the remaining volume, and swirl gently to mix the solution. Let stand for 5 minutes and dilute to the mark with methanol.
[0043] After 45 minutes of reaction, use methanol as a reference and record the maximum absorbance at about 437nm:
[0044]
[0045] Weigh 0.7257g of TMQ sample and dissolve it in 50ml of chloroform with a separatory funnel. Then, 50ml of 2N hydrochloric acid was added and shaken rapidly for 2 minutes. After separation int...
Embodiment 2
[0053] Take 8 parts in parallel with the same antiaging agent TMQ sample, utilize the calibration curve that makes among the embodiment one, carry out sample analysis by the analytical operation method in the embodiment, the result is as follows:
[0054]
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