2014•Applied Chemical IndustryRequires access
Purity determination of salicylic acid chloride
Yang Feng-k
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Abstract
Use dual-wavelength method to determine the purity of p-chlorine salicylic acid.The maximum absorption wavelength of p-chlorine salicylic acid in ethanol is 243 nm.The total absorption wavelength of byproducts is 267 nm.Determination of the standard purity of pure p-chlorine salicylic acid more than99.5%.Determination of the purity of three kinds of commercially available p-chlorine salicylic acid was97.8 % ~ 98.0 %.Studies show that the method is simple,the analytical data is accurate and reliable.