SWEET & SOUR CRUDE OIL

Petroleum crude oil is called as sweet when the sulfur content is less than 0.5%. Sweet oil is used for production of gasoline, kerosene and diesel. Its called sweet because it is having a pleasant smell and mildly sweet taste due to low level of sulfur.

Sour crude oil is having sulfur content greater than 0.5% and is toxic as it evolves hydrogen sulphide.

English: A sample of crude oil from Haenigsen,...

Crude oil sweet and sour is listed in IMDG Code as below

UN 1267 PETROLEUM CRUDE OIL 

Un 3494 PETROLEUM SOUR CRUDE OIL, FLAMMABLE, TOXIC 

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