Isthmus-34 Light

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Isthmus-34 Light is a sour crude oil produced in Mexico mainly in the Campeche zone, in the Gulf of Mexico along with the extraction centers in Chiapas, Tabasco, and Veracruz.[1] The name derives from the nearby Isthmus of Tehuantepec and the oil is a component of the OPEC Reference Basket (despite Mexico's not being a part of OPEC).[2] It has the following characteristics:

Properties Isthmus
Density (20 °C) 0.8535 g/cm3
  API gravity 33.74 °API
  60 °F (15.6 °C) 65.6 Saybolt Universal Seconds (SUS)
  70 °F (21.1 °C) 57.8 SUS
  77 °F (25.0 °C) 54.5 SUS
Sulphur total, weight % 1.45
Oils, weight % 89.2
Alkanes, weight % 8.1

See also[edit]


  1. ^ "The Deer Park Refinery: Pemex-Shell Joint Venture" (pdf). Bureau of Economic Geology, Jackson School of Geosciences, University of Texas at Austin. February 2002. Retrieved 30 March 2011.
  2. ^ "WINTERSHALL: Types of oil". Retrieved 30 March 2011.