National Health Commission of the People's Republic of China
Latest
GB 1886.359-2022
Scope
This standard applies to gum base and gum base ingredients. This method specifies the automated headspace-gas chromatography detection method for residual monomers in gum base polymers and the gas chromatography-mass spectrometry confirmation method for positive samples. This method is suitable for the quantitative determination of 1,3-butadiene and styrene monomers remaining in styrene-butadiene rubber (SBR), isobutylene remaining in polyisobutylene rubber, isobutylene and isoprene remaining in butyl rubber, and polyisobutylene. Residual vinyl acetate in vinyl acetate. This method specifies two methods for the determination of volatile substances: the hot roller method and the oven method.
GB 1886.359-2022 Referenced Document
GB/T 601 Chemical reagent.Preparations of reference titration solutions
GB/T 602 Chemical reagent--Preparations of standard solutions for impurity
GB/T 603 Preparation of preparations and products used in chemical reagent test methods*, 2023-08-06 Update
GB/T 6682 Water for analytical laboratory use.Specification and test methods
GB 1886.359-2022 history
2022GB 1886.359-2022 National Food Safety Standard Food Additive Gum Base and Its Ingredients