Reference number
ISO 3771:2011
International Standard
ISO 3771:2011
Petroleum products — Determination of base number — Perchloric acid potentiometric titration method
Edition 3
2011-09
Read sample
ISO 3771:2011
44771
Published (Edition 3, 2011)
This publication was last reviewed and confirmed in 2022. Therefore this version remains current.

ISO 3771:2011

ISO 3771:2011
44771
Language
Format
CHF 63
Convert Swiss francs (CHF) to your currency

Abstract

ISO 3771:2011 specifies a method for the determination of basic constituents in petroleum products by potentiometric titration with perchloric acid in glacial acetic acid.

The constituents that can be considered to have basic characteristics include organic and inorganic bases, amino compounds, salts of weak acids (e.g. soaps), basic salts of polyacid bases, and salts of heavy metals.

The ranges of base number values for which precision values for the method have been established are:

  • unused oils: base numbers from 3 to 45;
  • additive concentrates: base numbers from 5 to 45;
  • used oils: base numbers from 3 to 30.

General information

  •  : Published
     : 2011-09
    : International Standard confirmed [90.93]
  •  : 3
     : 8
  • ISO/TC 28
    75.080 
  • RSS updates

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