Important notice: Website update - 21st of November 2024
Coming soon - Please be aware that we're currently working on a new and improved website. We're working hard to resolve the final issues and bring you the new website as soon as possible.
IP 276: Petroleum products - Determination of base number - Perchloric acid potentiometric titration method
- Method adopted/last revised: 2012
- Method reapproved: 2018
- REF/ISBN: IP276-7250659
- Status: Current
- First printed in STM books: May 2019
-
Scope
This International Standard 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.
Members Benefits
Are you an EI Member? If yes, register/log in now to ensure you receive free access or discounts to EI publications.
If you are not a Member, why not join today and receive all of the benefits of EI Membership? EI Members are entitled to a 25% discount on most EI publications.