SPECIFICATION OF METHYL VINYL ETHER-MALEIC ANHYDRIDE COPOLYMER
ANNEXSupplementary provisions
ANNEX SPECIFICATION OF METHYL VINYL ETHER-MALEIC ANHYDRIDE COPOLYMER Definition: Methyl vinyl ether-maleic anhydride copolymer is an anhydrous copolymer of methyl vinyl ether and maleic anhydride. Structural formula: Description : Free-flowing, white to white-off powder. Identification: CAS No 9011-16-9 Purity: Assay value At least 99,5 % in dry matter Specific viscosity (1 % MEK) 2-10 Residual methyl vinyl ether Not more than 150 ppm Residual maleic anhydride Not more than 250 ppm Acetaldehyde Not more than 500 ppm Methanol Not more than 500 ppm Dilauroyl peroxide Not more than 15 ppm Total heavy metals Not more than 10 ppm Microbiological criteria: Total aerobic plate count Not more than 500 CFU/g Mould/yeast Not more than 500 CFU/g Escherichia coli Negative to test Salmonella spp. Negative to test Staphylococcus aureus Negative to test Pseudomonas aeruginosa Negative to test