Synthetic HydrocarbonsSynthetic hydrocarbon lubricants are engineered for particular applications. For compressor applications, polyalphaolefin (PAO) base stock is most commonly used. PAOs provide many of the best lubricating features of a mineral oil without the drawbacks. Although PAO components are derived from petroleum base stock, they are chemically re-engineered to have a consistent, controlled molecular structure of fully saturated hydrogen and carbon. Because their molecular structure is homogeneous, their properties and characteristics are predictable. PAOs separate from water extremely well, are chemically stable and have low toxicity. PAOs however, are not good solvents. The additive chemistry must be adjusted for that fact.
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