Sweet crude oil is a type of petroleum. The New York Mercantile Exchange designates petroleum with less than 0.42% sulfur as "sweet". Petroleum containing higher levels of sulfur is called sour crude oil.
Sweet crude oil contains small amounts of hydrogen sulfide and carbon dioxide. High-quality, low-sulfur crude oil is commonly used for processing into gasoline and is in high demand, particularly in the industrialized nations. "Light sweet crude oil" is the most sought-after version of crude oil as it contains a disproportionately large amount of these fractions that are used to process gasoline (naphtha), kerosene, and high-quality diesel (gas oil). The term "sweet" originates from the fact that a low level of sulfur provides the oil with a mildly sweet taste and pleasant smell. Nineteenth century prospectors would taste and smell small quantities of oil to determine its quality.
Famous quotes containing the words sweet, crude and/or oil:
“It is sweet to dance to violins
When Love and Life are fair:
To dance to flutes, to dance to lutes
Is delicate and rare:
But it is not sweet with nimble feet
To dance upon the air!”
—Oscar Wilde (1854–1900)
“The idealism of Berkeley is only a crude statement of the idealism of Jesus, and that again is a crude statement of the fact that all nature is the rapid efflux of goodness executing and organizing itself.”
—Ralph Waldo Emerson (1803–1882)
“Oh Gull of my childhood,
cry over my window over and over, take me back,
oh harbors of oil and cunners, teach me to laugh
and cry again that way that was the good bargain
of youth....”
—Anne Sexton (1928–1974)