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ASTM International - ASTM UOP729-76T

Phenols in Light Distillates by Direct Titration

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Organization: ASTM International
Publication Date: 29 July 2002
Status: inactive
Page Count: 6
scope:

This method is for determining phenols and hindered phenols in petroleum fractions up to and including No. 2 distillates; e.g., gasolines, naphthas, kerosines, jet fuels, No. 1 fuels and No. 2 fuels. The procedure gives nicely defined titration curves and endpoints on samples up to No. 1 distillate, but No. 2 oils sometimes give titration curves with ill-defined endpoints. There is no way to predict this behavior, so the analyst must simply try it on the sample.

Phenols as hindered as butylhydroxytoluene (BHT) can be titrated directly using this method. Provision is included to overcome the acidity of mercaptans and thiophenols via a mild oxidation to the corresponding disulfides.

PHENOLS AND THIOPHENOLS IN PETROLEUM PRODUCTS BY SPECTROPHOTOMETRY, which can be used with accuracy on gasolines and on refinery caustic solutions.

Document History

ASTM UOP729-76T
July 29, 2002
Phenols in Light Distillates by Direct Titration
This method is for determining phenols and hindered phenols in petroleum fractions up to and including No. 2 distillates; e.g., gasolines, naphthas, kerosines, jet fuels, No. 1 fuels and No. 2 fuels....
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