QB/T 5347-2018 in English

This standard specifies a method for determining the content of benzoic acid, salicylic acid, sorbic acid, and phenoxyethanol in toothpaste using high-performance liquid chromatography. It outlines the principles, reagents, instruments, sample preparation, chromatographic conditions, and procedures for analysis. The method is applicable for the quantitative determination of these compounds in oral care products, ensuring accurate and reliable results. The standard provides detailed steps for calibration, sample extraction, and data processing, which are essential for the proper application of the technique. It also includes requirements for quality control and validation of the analytical method to ensure consistency and reproducibility of the test results. The procedure is suitable for use in laboratories conducting routine analysis of oral hygiene products.