What is the item description for 3911909940 of HScode France?
The description of the item 3911909940 of France 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) : Mixed calcium and sodium salt of a copolymer of maleic acid and methyl vinyl ether, having a calcium content of 9|% or more but not more than 16|% by weight