关键词: 皮革化学品, 乙醛, 溯源, 聚氧乙烯醚

Abstract: The correlation between leather chemicals and acetaldehyde in leather was evaluated through a test method based on purge-and-trap technique, and the trace-to-source of acetaldehyde in leather was investigated. The results indicated that content of acetaldehyde in soaking auxiliary and degreasing agent was obvious, and the content of acetaldehyde increased after the material was used in raw leather processing. The further test on the ethoxylated compounds as AEO and PEG, which are the main ingredients in immersion auxiliaries and degreaser, revealed that AEO-3 and PEG2000 with low degree of polymerization exhibited obvious acetaldehyde contents. The results showed that some ethoxylated compounds in leather chemicals were one of the main sources of acetaldehyde in leather.

Key words: leather chemicals, acetaldehyde, trace to source, ethoxylates