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ASTM UOP 729 : 1976 : REV T

ASTM UOP 729 : 1976 : REV T

Withdrawn

Withdrawn

A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

Phenols in Light Distillates by Direct Titration

Available format(s)

Hardcopy , PDF

Withdrawn date

11-11-2014

Language(s)

English

Published date

07-29-2002

Publisher

American Society for Testing and Materials

Defines methods 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.

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.

DocumentType
Standard
Pages
6
PublisherName
American Society for Testing and Materials
Status
Withdrawn

ASTM UOP 262 : 1999 Phenols and Thiophenols in Petroleum Products by Spectrophotometry

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Hardcopy - English
PDF - English
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