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See Chinese contents: GB/T 42425-2023 GB/T 42425-2023: Determination of capryloyl salicylic acid, phenylethyl resorcinol, ferulic acid in cosmetics -- High performance liquid chromatography
This document describes the high-performance liquid chromatography method for the determination of capryloyl salicylic acid, phenylethyl resorcinol, and ferulic acid in cosmetics, including principles, reagents and materials, instruments and equipment, test steps, test data processing, recovery rate, precision, etc. This document is applicable to the determination of capryloyl salicylic acid, phenylethyl resorcinol, and ferulic acid in water, lotion, and cream cosmetics. In this document, the method detection limit and quantification limit of capryloyl salicylic acid, phenylethyl resorcinol, and ferulic acid are 3.3 mg/kg and 10 mg/kg, respectively.
