GB 31604.57-2023: National food safety standard - Food contact materials and products - Determination of migration of benzophenone substances

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Scope

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

Basic Data

Standard ID	GB 31604.57-2023 (GB31604.57-2023)
Description (Translated English)	National food safety standard - Food contact materials and products - General rules for verification of chemical analysis methods
Sector / Industry	National Standard
Classification of Chinese Standard	X09
Word Count Estimation	17,134
Date of Issue	2023-09-06
Date of Implementation	2024-09-06
Issuing agency(ies)	National Health Commission of the People's Republic of China, State Administration for Market Regulation
Summary	This standard specifies general requirements for the verification of chemical analysis methods for food contact materials and products. This standard is applicable to the verification process during the formulation and revision of chemical analysis methods for food contact materials and products in national food safety standards.