prov:value
| - Those preferably utilizable are hydrocarbons, such as toluene and xylene, further ethers, such as dibutyl ether, tetrahydrofuran, dioxane, glycol dimethyl ether and diglycol dimethyl ether, and additionally polar solvents, such as dimethyl sulphoxide, sulpholane, dimethylformamide and N-methyl-pyrrolidone.
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