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China
National Standards
To Be Enforced
GB 31604.21-2025
Determination of Migration of Benzoic Acid, Phthalic Acid, and Benzenetricarboxylic Acid in Food Contact Materials and Articles
Update Date: Sep 26, 2025
Latest Published
Sep 2, 2025
Implemented
Mar 2, 2026
Abolished
Alternative Standards
This standard will replace GB 31604.21-2016 National Food Safety Standard Determination of Migration of Terephthalic Acid in Food Contact Materials and Articles on March 2, 2026.
Industry
Chemical
Region
China
Issuing Authority
National Health Commission of the People's Republic of China, State Administration for Market Regulation
Main Content
This standard specifies the liquid chromatography method for determining the migration of benzoic acid, 1,2-benzenedicarboxylic acid (also known as phthalic acid), 1,3-benzenedicarboxylic acid (also known as isophthalic acid), 1,4-benzenedicarboxylic acid (also known as terephthalic acid), 1,3,5-benzenetricarboxylic acid (also known as trimesic acid), 1,2,4-benzenetricarboxylic acid (also known as trimellitic acid), and 1,2,3-benzenetricarboxylic acid (also known as hemimellitic acid). It is applicable to the determination of these compounds in food contact plastic materials and articles, food contact paper and cardboard materials and articles, adhesives for food contact materials and articles, and coatings and paints used in food contact applications.
Operation
Translations
Determination of Migration of Benzoic Acid, Phthalic Acid, and Benzenetricarboxylic Acid in Food Contact Materials and Articles
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