What is cbob

It would damage them. Strong stuff! Instead, ethanol is most often blended in at the rack , closer to its ultimate destination.

Ethanol serves to boost octane levels in gasoline, which can be helpful. But it also raises Reid Vapor Pressure, which can be tricky. RVP measures the volatility in gasoline and is subject to seasonal mandates.

So, blending ethanol can be complicated during summer months, when people are looking for lower-RVP gasoline. Sometimes, detergents or other additives are blended into gasoline before it hits retail stations -- those additives are a way that fuel brands differentiate themselves with customers.

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Oxygenated gasoline was reported as a separate product from January until December inclusive. Beginning with monthly data for January , oxygenated gasoline is included in conventional gasoline. Historical oxygenated gasoline data also excluded other reformulated gasoline with a seasonal oxygen requirement regardless of season. Oxygenates Substances which, when added to gasoline, increase the amount of oxygen in that gasoline blend. Fuel Ethanol : Blends of up to 10 percent by volume anhydrous ethanol proof commonly referred to as the "gasohol waiver".

Methanol : Blends of methanol and gasoline-grade tertiary butyl alcohol GTBA such that the total oxygen content does not exceed 3. Blends of up to 5. The total oxygen must not exceed 3. Blenders must take precautions that the blends are not used as base gasolines for other oxygenated blends commonly referred to as the "Sun" waiver. These districts were originally defined during World War II for purposes of administering oil allocation.

Petroleum Products Petroleum products are obtained from the processing of crude oil including lease condensate , natural gas, and other hydrocarbon compounds. Petroleum products include unfinished oils, liquefied petroleum gases, pentanes plus, aviation gasoline, motor gasoline, naphtha-type jet fuel, kerosene-type jet fuel, kerosene, distillate fuel oil, residual fuel oil, petrochemical feedstocks, special naphthas, lubricants, waxes, petroleum coke, asphalt, road oil, still gas, and miscellaneous products.

Ppm Parts per million. Propane C3H8 A normally gaseous straight-chain hydrocarbon. It is a colorless paraffinic gas that boils at a temperature of - It is extracted from natural gas or refinery gas streams. Propylene C3H6 An olefinic hydrocarbon recovered from refinery processes or petrochemical processes. Reformulated Blended with Alcohol Reformulated gasoline blended with an alcohol component e. Reformulated Blendstock for Oxgenate Blending RBOB Motor gasoline blending components intended for blending with oxygenates to produce finished reformulated motor gasoline.

Reformulated Gasoline RFG Finished gasoline formulated for use in motor vehicles, the composition and properties of which meet the requirements of the reformulated gasoline regulations promulgated by the U.

It includes gasoline produced to meet or exceed emissions performance and benzene content standards of federal-program reformulated gasoline even though the gasoline may not meet all of the composition requirements e.

Residual Fuel Oil A general classification for the heavier oils, known as No. It is used in steam-powered vessels in government service and inshore powerplants.

The book adjustments are illustrated below. More In File. Page Last Reviewed or Updated: Jun Share Facebook Twitter Linkedin Print.