ASTM-UOP209 2000

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UOP209-00 Alkalinity, Sulfide and Mercaptide Analyses of Used Refinery Caustic Solutions

Published By	Publication Date	Number of Pages
ASTM	2000	16

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ASTM UOP209-00

Active Standard: Alkalinity, Sulfide and Mercaptide Analyses of Used Refinery Caustic Solutions

ASTM UOP209

Scope

This method is for the analysis of used refinery caustic solutions. Part A is for determining the strong base, weak base (spent caustic) and total alkalinity. Part B is for determining the concentration of sulfur present as sodium sulfide and sodium mercaptide. The data generated using this method are considered quantitative over the concentration ranges generally encountered in these types of refinery caustic solutions. Refinery caustic samples are inherently unstable, and must be analyzed as soon as possible after they are drawn.

Part A, a potentiometric titration, is an accurate procedure for use in distinguishing between strong bases, i.e., sodium phenolate and sodium hydroxide. The APPENDIX contains a procedure, Caustic Solution Analysis – Double Indicator, which can be used as a convenient, although not rigorous, test for the plant control of refinery caustic solutions used to remove hydrogen sulfide, mercaptans and certain other weak acids from petroleum products.

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Standard Title	UOP209-00 Alkalinity, Sulfide and Mercaptide Analyses of Used Refinery Caustic Solutions
Published Code	ASTM
Publication Date	2000
Pages Count	16

ASTM-UOP209 2000

ASTM UOP209-00

Active Standard: Alkalinity, Sulfide and Mercaptide Analyses of Used Refinery Caustic Solutions

ASTM UOP209

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