UOP Standard Withdrawn, Replaced   Last Updated: Jul 29, 2002 Track Document
ASTM UOP423-85

Thiosulfate in Used Refinery Caustic

Thiosulfate in Used Refinery Caustic UOP423-85 UOP|UOP423-85|en-US Thiosulfate in Used Refinery Caustic Standard new
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Universal Oil Products

This method is for determining thiosulfate ion, S2O3=, in the range of 0.01 to 5 mass-% in used refinery caustic, which may contain sodium salts or phenols, acid oils, naphthenic acids, mercaptans, disulfide oil, Merox catalyst, polysulfides and/or hydrogen sulfide.

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