E 1208,Polyvinylpyrrolidone-vinyl acetate copolymer,
,E 1208,Polyvinylpyrrolidone-vinyl acetate copolymer.,100 000,,,
    K-value: dimensionless index, calculated from kinematic viscosity measurements of dilute solutions, used to indicate the likely degree of polymerisation or molecular size of a polymer.    ,
 Synonyms ,Copolyvidon; copovidone; 1-vinyl-2-pyrrolidone-vinyl acetate copolymer; 2-pyrrolidinone, 1-ethenyl-, polymer with ethenyl acetate,
 Definition ,It is produced by free radical copolymerisation of N-vinyl-2-pyrrolidone and vinyl acetate in solution in propan-2-ol, in the presence of initiators.,
Einecs,,
Chemical name,Acetic acid, ethenyl ester, polymer with 1-ethenyl-2-pyrrolidinone,
Chemical formula,(C 6 H 9 NO) n .(C 4 H 6 O 2 ) m ,
Average Viscosity Molecular Weight,Between 26 000 and 46 000 g/mol.,
Assay,Nitrogen content 7,0-8,0 %,
 Description ,The physical state is described as a white to yellowish-white powder or flakes with an average particle size of 50-130 μm.,

Solubility,Freely soluble in water, ethanol, ethylene chloride and ether.,
Infrared absorption spectroscopy,To be identified,
European Colour Test (BY Colour),Minimum BY5,
K-value (1 % solids in aqueous solution),25,2-30,8,
pH value,3,0-7,0 (10 % aqueous solution),

Vinylacetate component in copolymer,Not more than 42,0 %,
Free vinyl acetate,Not more than 5 mg/kg,
Total ash,Not more than 0,1 %,
Aldehyde,Not more than 2 000 mg/kg (as acetaldehyde),
Free-N-vinylpyrrolidone,Not more than 5 mg/kg,
Hydrazine,Not more than 0,8 mg/kg,
Peroxide content,Not more than 400 mg/kg,
Propan-2-ol,Not more than 150 mg/kg,
Arsenic,Not more than 3 mg/kg,
Lead,Not more than 2 mg/kg,
Mercury,Not more than 1 mg/kg,
Cadmium,Not more than 1 mg/kg,