HH-LYS2019 工業(yè)氯乙酸純度測定專用液相柱2019

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工業(yè)氯乙酸純度測定專用液相柱2019 圖片：


Industrial chloroacetic acid purity determination liquid column 2019
Industrial chloroacetic acid purity determination liquid column 2019 Details:

Stationary phase: dedicated
Specification: HH-LYS2019

Chloroacetic acid is an important chemical intermediate. The quality analysis of this product is generally analyzed by the national standard method (chemical method). Due to the poor color rendering sensitivity of the method, the reproducibility of the analysis is not good and the error is large. The analysis time is long (about 1.5 ~ 2.0h), so many units are studying its faster and better analytical methods. Gas chromatography is one of the key researches. There are two kinds of direct and indirect methods: direct method to instrument The damage is serious and the operating temperature is high, which should not be used. The indirect method has less damage to the instrument and low operating temperature. However, if the internal standard method is used, the analysis operation is troublesome and the analysis time is long. If the corrected area normalization method is used, although the operation is simple, the analysis time is short (about 15 to 20 minutes). However, it is greatly affected by the moisture content of the product (the water cannot be directly detected by the indirect method). Chloroacetic acid is a strong hygroscopic product, and water content is inevitable. The water content also varies with the humidity of the environment, so only A quick method for determining the water content can be combined with the modified area normalization method to achieve an accurate and rapid analysis of the chloroacetic acid product.

Tengzhou Haohao Chromatography Instrument Technology Service Co., Ltd. keeps pace with the times and develops high performance liquid chromatography to determine the purity of industrial chloroacetic acid. Its impurities such as acetic acid, dichloroacetic acid, glycolic acid and main peak chloroacetic acid are effectively separated, and the peak shape is symmetrical. And the impurity dichloroacetic acid is out before the main peak, and there is no covering phenomenon. This technology is exclusively developed by Haohao Chromatography, which has opened up a new method for chloroacetic acid analysis.

Industrial chloroacetic acid purity determination liquid column 2019