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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. 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). It has the following characteristics:
|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|
- "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.
- "WINTERSHALL: Types of oil". Retrieved 30 March 2011.
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