The present invention provides a flame retardant encapsulant composition. A composition includes 40-80 wt. % of an encapsulant comprising 60 to 80 parts by weight of hydrocarbon oil suspended in a cross-linked polymer matrix; and a liquid flame retardant. At least a portion of the liquid flame retardant can be present in the form of a dispersed liquid phase suspended in a continuous oil-rich phase that swells the cross-linked polymer matrix. In some exemplary embodiments, the oil-rich phase comprises less than 15% of the liquid flame retardant dissolved in the oil-rich phase.
