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See Chinese contents: GB 31604.57-2023 GB 31604.57-2023: National food safety standard - Food contact materials and products - Determination of migration of benzophenone substances
This Standard specifies the methods for the determination of migration of eight benzophenone substances in food contact materials and products. Method 1 - liquid chromatography is applicable to the determination of migration of (2-hydroxy-4-methoxyphenyl) (2-hydroxyphenyl) ketone, 2,4-dihydroxybenzophenone, (2-hydroxy-4-methoxyphenyl) phenyl ketone, 4-4?-dihydroxybenzophenone, 2-hydroxy-4-n-octoxy-benzophenone, 2-hydroxy-4-n-hexyloxy-benzophenone, benzophenone and 4-4?-difluoro-benzophenone in plastics, paints and coatings, rubber, and food contact materials and products using inks in water, 4% (volume fraction) acetic acid, 10% (volume fraction) ethanol, 20% (volume fraction) ethanol, 50% (volume fraction) ethanol food simulants, as well as chemical alternative solvents - 95% (volume fraction) ethanol and isooctane. Method 2 - liquid chromatography - tandem mass spectrometry is applicable to the determination of migration of (2-hydroxy-4-methoxyphenyl) (2-hydroxyphenyl) ketone, 2,4-dihydroxybenzophenone, (2-hydroxy-4-methoxyphenyl) phenyl ketone, 4-4?-dihydroxybenzophenone, 2-hydroxy-4-n-octoxy-benzophenone, 2-hydroxy-4-n-hexyloxy-benzophenone, benzophenone and 4-4?-difluoro-benzophenone in plastics, paints and coatings, rubber, and food contact materials and products using inks in water, 4% (volume fraction) acetic acid, 10% (volume fraction) ethanol, 20% (volume fraction) ethanol, 50% (volume fraction) ethanol and olive oil food simulants, as well as chemical alternative solvents - 95% (volume fraction) ethanol and isooctane. Method 1 - Liquid Chromatography
