Article
Article
Petroleum wax
Article By:
Kuhn, Wayne E. Professional Engineer, Portland, Oregon.
Last reviewed:January 2020
DOI:https://doi.org/10.1036/1097-8542.742100
A substance produced primarily from the dewaxing of lubricating-oil fractions of petroleum. It may be of either the crystalline or microcrystalline type. The crystalline wax is produced from distillate lubricating fractions, whereas the microcrystalline wax is obtained from the residual lubricating fractions of the crude oil. The melting-point range for refined crystalline waxes is 120–150°F (48–65°C) while the petrolatum or microcrystalline waxes have melting points in the range of 150–175°F (65–79°C).
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