Testing method for the content of 1,2-hexanediol

Introduction: 1,2-Hexanediol is an important organic compound with wide applications in industries such as pharmaceuticals, cosmetics, plastics, etc. Accurately testing and determining the content of 1,2-hexanediol is crucial to ensure the quality and safety of the product. This article will introduce a simple, fast, and accurate method for testing the content of 1,2-hexanediol. Materials and Instruments -1,2-Hexanediol Sample - Methanol (Purity ≥ 99%) - Water (Purity ≥ 99%) -1,2-Hexanediol Standard - Weighing Paper - Weighing Instrument - Pipette - Conventional Laboratory Instruments (such as Colorimeter, Pipette, Centrifuge, etc.) Experimental Steps 1. Select a certain amount of 1,2-Hexanediol sample and record its mass. 2. Use a weighing instrument to accurately weigh the sample of 1,2-hexanediol and transfer it to a weighing paper. 3. Transfer the weighed 1,2-hexanediol sample to a colorimetric dish and indicate the sample number. 4. Prepare a series of standard solutions of 1,2-hexanediol with known concentrations in advance and indicate their concentrations. 5. Add a certain volume of methanol and water solution to the colorimetric dish to dilute the concentration of 1,2-hexanediol in the sample.

6. Calculate the required volumes of methanol and water based on the experimentally validated ratio (such as 1:1), standard concentration, sample mass, etc., and add them to the colorimetric dish.
7. Gently mix the solution in the colorimetric dish using a pipette to ensure even mixing.
8. Use a centrifuge to centrifuge the color dish and remove any bubbles to avoid affecting subsequent measurements.
9. Using conventional laboratory equipment such as spectrophotometers, colorimeters, etc., determine the absorbance or chromaticity of the solution in the colorimetric dish according to the selected measurement method.
10. Draw a standard curve or calculate the concentration value based on the measurement method used.
Results and Discussion: According to the above testing method, the content of 1,2-hexanediol in the sample can be obtained. By comparing the standard curve or using a calculation formula, the percentage content of 1,2-hexanediol can be accurately calculated.
It should be noted that during the experimental process, all experimental conditions should be strictly controlled to ensure the accuracy and reproducibility of the experimental results. In addition, to improve the reliability of the test, it is recommended to conduct multiple repeated experiments and take the average value.
Conclusion: This article introduces a simple, rapid, and accurate method for testing the content of 1,2-hexanediol. By diluting with methanol and water solutions and comparing with standard samples, the content of 1,2-hexanediol samples can be accurately measured. The reliability and accuracy of the experimental results can be ensured through reasonable control of experimental conditions and repeated experiments.
This testing method is suitable for testing the content of 1,2-hexanediol in various industries and has certain practical application value.