The invention relates to an emulsifiable concentrate for an emulsified phytosanitary composition containing more than 90 wt% of at least one hydrocarbon mixture having a distillation cut greater than 250° C, said emulsifiable concentrate moreover including less than 20 wt% n-paraffins, less than 1 wt% aromatics, and 1 to 4 wt% of a mixture of at least two surfactants TA1 and TA2 such that TA2 is more hydrophobic than TA1, and the mixture HLB of which varies from 6 through 10.%
