Pennsylvania Grade Crude Oil is a type of sweet crude oil (sweet crude oil). It is found primarily in the Appalachian basin in the states of New York, Pennsylvania, Ohio, and West Virginia, and takes its name for the state of Pennsylvania, where it was first extracted. Pennsylvania grade crude oil can be broken down into gasoline, kerosene, fuel oil, gas oil, wax distillate, cylinder stock (or bottoms) and other refined products such as white oil and paraffin. Pennsylvania grade crude oil when seen in reflected sunlight has a green color and under ultraviolet light looks fluorescent.
Pennsylvania grade crude oil is thermally stable and has a high viscosity index. It is generally free of asphalt and has only trace amounts of sulfur and nitrogen. It is also high in paraffin and other waxes making it highly desirable for refinement into petroleum lubricants such as motor oil. Its products are also valuable for use in certain hydraulic applications. By-products are commonly found in consumer goods such as cosmetics, and topical ointments.
Products refined from this type of oil are particularly prized as lubricants and many oil companies prominently display the fact that they use Pennsylvania Grade crude oil in their products.
Bradford, Pennsylvania is major center for the refining of Pennsylvania grade crude oil.
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—For the State of New Jersey, U.S. public relief program (1935-1943)
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oh harbors of oil and cunners, teach me to laugh
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—Anne Sexton (1928–1974)