Free sulfur in petroleum distillates -- Effect of peroxides upon the copper-strip method. Quantitative method for the determination of free sulfur

Comay, S.

doi:10.1021/ac50104a020

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1946

1952

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Cited by 7 publications

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“…Up to the present the analytical determination of elemental sulfur in crude oil has been beset with difficulties and uncertainties. It is for this reason, perhaps, that the presence of elemental sulfur in crude oils has been difficult to establish and that any announcement of its presence has met with skepticism (4,7). Because hydrogen sulfide is often as-sociated with crude oil and it readily reacts with oxygen to yield elemental sulfur, this skepticism is probably warranted.…”

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confidence: 99%

Elemental Sulfur in Crude Oil

Eccleston¹,

Morrison²,

Smith³

1952

Anal. Chem.

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mentioning

confidence: 99%

Elemental Sulfur in Crude Oil

Eccleston¹,

Morrison²,

Smith³

1952

Anal. Chem.

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The estimation of sulphur compounds in crude and refined benzoles. Part I

Claxton¹,

Hoffert²

1946

J. Chem. Technol. Biotechnol.

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Until recently the sulphur compounds in crude benzoles were generally considered to be chiefly carbon disulphide and thiophene, although the presence of other compounds such as sulphides, disulphides and mercaptans had been reported. With the exception of carbon disulphide, methods of estimation had not been accurately worked out and knowledge concerning the exact quantities of other sulphur compounds was scanty. Examination of a large number of crude benzoles in these laboratories had shown that normal high‐temperature benzoles contain approximately half their sulphur content as carbon disulphide. It has been customary to regard the remainder as thiophene and its derivatives, an assumption that is justified to some extent since other sulphur compounds, such as sulphides, behave in the same way as thiopheno during refining by sulphuric acid. For example, although a large number of makes and types of acid‐washed benzoic have been tested, it has always been found that the remaining sulphur, other than as carbon disulphide, was the same for a particular yield of benzole irrespective of the concentration and quantity of sulphuric acid used to obtain this yield.

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