Low Extract Oil (LEO)

About This Product

Low Extract Oil is an extract-type process oil from the light side of lube refining. Solvent extraction splits a lube distillate into a raffinate, which goes on to become base oil, and an extract that carries the aromatic and polar components. Extract drawn from the lighter distillates is a thin, mobile oil with strong solvency, and that combination is what buyers of LEO are paying for. It shares its general chemistry with High Extract Oil; the two differ chiefly in viscosity, HEO being the heavier and more aromatic, and so in how they behave in a mixer and in the finished article. The defining limit is a minimum kinematic viscosity of 2.5 cSt at 100 °C. LEO is the thin member of the extract family, and its low viscosity means it pumps and disperses at modest temperatures, wets fillers quickly and softens a compound without long mixing cycles. Specific gravity is capped at max 1.10. The open-cup flash point, min 150 °C, is the figure to compare with the mixing, calendering and curing temperatures of the process; it matches High Extract Oil but sits well below the limits set for Rubber Process Oil and Carbon Black Feedstock Oil, so temperature control and extraction at the mixer deserve attention. Two further limits describe what any extract brings with it. Sulphur content is max 5.6 wt %, reflecting the sulphur-bearing aromatic molecules that solvent extraction concentrates out of the distillate, and Conradson carbon residue is max 10.0 wt %, a measure of the material that turns to coke when the oil is strongly heated. Both matter less in compounding than in uses where the oil is burned or held at high temperature. The datasheet sets no colour limit, so where the finished article is pale a short compound trial is the sensible way to confirm that LEO suits it. LEO is used as a softener and extender in EVA footwear soles and midsoles, in sealant and mastic formulations, in rubber-based adhesives and putties, and in lighter polymer goods where a low-viscosity oil processes better than a heavy extract. High Extract Oil is the heavier, more aromatic choice for extending and reclaiming rubber, and Rubber Process Oil is the dense oil for tyre compounding. Indicative availability is 700 – 1,500 MT per month. As with every aromatic extract, the SDS sets out its classification and the precautions for safe use. Bio Green Chem supplies LEO from Pakistan in ISO tanks, IBC tanks or drums, with custom packaging by arrangement. Every lot travels with its own certificate of analysis. Its technical datasheet is published here alongside the specification, and an SDS is provided whenever a buyer requests one.