Cart

IP 449: Petroleum products and lubricants - Determination of acid number - Non-aqueous potentiometric titration method

refining-and-midstream
analytical-testing; ip-test-methods
  • Published: January 2000
  • REF/ISBN: IP449-2934869

Overview:

Scope

This European Standard specifies a method for determination of acid number by potentiometric titration, of lubricating oils and additives soluble in mixtures of propan-2-01, dimethylsulfoxide and toluene. It is applicable in the range 0,1 mg KOH/g to 250 mg KOH/g, and to unused and used lubricating oils and additives.
In the case of engine oils, used engine oils and oils with a high polymer content, e.g. viscosity index improvers, precision will be poor as the electrode performance will be impaired, and the application of this method is not recommended. Precision data are only valid for industrial oils and related products.

NOTE No direct conclusions can be drawn from the content of the acidic constituents on the suitability of lubricants for specific applications, and it is not possible to rate comparatively the quality of lubricants and additives on the basis of the quantity of acidic components.

Log in to your EI account to purchase this publication.

If you are not a Member, why not join today and receive all of the benefits of EI Membership?
EI Technical Partner employees have free access to all T+I resources. Other levels of EI membership provide a 25% discount on most EI publications.

Our publications website is designed exclusively for EI members and customers to easily access and download PDF versions of our publications. For hard copies, please contact the EI Publishing Team at [email protected]. To access previously downloaded copies go to My publications.

Membership icon Your membership
  • User type icon User Type
  • PDF icon PDF Document
  • Hard copy icon Hard copy
  • Discount icon 25% discount on most EI publications
  • Free icon Free access to other EI publications
Membership icon Your membership
  • Technical partners
  • Free
  • Contact us
Membership icon Your membership
  • Technical company members
  • Free
  • Contact us
  • Limited access
Membership icon Your membership
  • EI member
  • £52.00
  • Contact us
Membership icon Your membership
  • Non-member
  • £104.00
  • Contact us
Membership icon

Your membership

Technical partners

  • PDF icon PDF Document
    Free
  • Hard copy icon Hard copy
    Contact us
  • Free icon Free access to other EI publications
Membership icon

Your membership

Technical company members

  • PDF icon PDF Document
    Free
  • Hard copy icon Hard copy
    Contact us
  • Free icon Limited access to other EI publications
Membership icon

Your membership

EI member

  • PDF icon PDF Document
    £52.00
  • Hard copy icon Hard copy
    Contact us
  • Free icon Limited access to other EI publications
Membership icon

Your membership

Non-member

  • PDF icon PDF Document
    £104.00
  • Hard copy icon Hard copy
    Contact us
  • Free icon Limited access to other EI publications

Related EI content