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See Chinese contents: GB/T 33611-2017 GB/T 33611-2017: Textiles -- Determination of short chain 4- (1, 1, 3, 3-tetramethylbutyl) phenol ethoxylate
This Standard specifies the method of adopting the normal phase High Performance Liquid Chromatography (HPLC) to determine the 3 kinds of short chain 4-(1, 1, 3, 3-tetrametylbutyl) phenol ethoxylate, namely, 4-tert-octylphenol monoethoxylate, 4-tertoctylphenol diethoxylate, 4-tert-octylphenol triethoxylate in the textiles. This Standard is applicable to all types of textile products.
