prov:value
| - ast one of the radicals R5, R6 or R7 is a hydrocarbon radical, that, when only one of the radicals R5, R6 or R7 is present as a hydrocarbon radical the latter is a C3 -C12 -hydrocarbon radical, except for C3 -C12 -n-alkyl, and that, when two or three radicals R5, R6 and R7 are present as hydrocarbon radicals, the latter are any C1 -C12 -hydrocarbon radicals, in amounts of 100 to 1 mol %, based on
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