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See Chinese contents: GB/T 14571.3-2022 GB/T 14571.3-2022: Test method of ethylene glycol for industrial use - Part 3：Determination of content of aldehydes
This document specifies spectrophotometric and liquid chromatographic methods for the determination of aldehydes in ethylene glycol for industrial use. This document applies to the determination of aldehyde content in industrial ethylene glycol. The determination range is 0.10mg/kg~50mg/kg. If the ethylene glycol sample contains ketones, the liquid chromatography analysis results will be high. Therefore, when applying this document to the quality control of the aldehyde content of ethylene glycol products, relevant parties shall negotiate to determine the analytical method to be used.
