ASTM UOP565-92
Acid Number and Naphthenic Acids by Potentiometric Titration

Standard No.

ASTM UOP565-92

Release Date

1992

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM UOP565-04

Latest

ASTM UOP565-05

Scope

This method is for determining the acid number of petroleum products, petroleum distillates, and other chemicals by potentiometric titration. Inorganic acids, organic acids, mercaptans and thiophenols respond to this analysis, but their respective salts do not; a procedure is also included for sodium naphthenate salts. The typical range for acid number detection is 0.002 to 5 mg KOH/g of sample, although higher levels can be accommodated.

ASTM UOP565-92 history

• 2005 ASTM UOP565-05 Acid Number and Naphthenic Acids by Titration
• 2004 ASTM UOP565-04 Acid Number and Naphthenic Acids by Potentiometric Titration
• 1992 ASTM UOP565-92 Acid Number and Naphthenic Acids by Potentiometric Titration