The description of the item 3911909970 of Italy HScode: Polymer and prepolymer plastics produced by chemical synthesis, n.e.s., in primary forms (excl. copolymer of p-cresol and divinylbenzene in the form of a solution in N,N-dimethylacetamide containing by weight >= 50% of polymer and hydrogenated copolymers of vinyltoluene and alfa-methylstyrene) : Aqueous solution containing by weight: -|30|% or more but not more than 40|% of poly-4-vinylpyridine-N-oxide, -|0,1|% or more but not more than 4|% of isonicotinic acid-N-oxide, -|0,1|% or more but not more than 3,5|% of sodium sulphate, -|0,1|% or more but not more than 2|% of 4-acetylpyridine-N-oxide