+1 888 608-7511
Need help finding a standard?
Help Desk
Methods of test for petroleum and its products -- Determination of acidity, neutralization value. Colour indicator titration method
This standard describes methods for the determination of the *acidity* of unused lubricating oil (see note 3), fuel oil, and petrolatum.
Two alternative methods, A and B, are given for the determination of acidity. Method A is more suitable than method B for dark coloured oils and oils of viscosity higher than 120mm2/s (cSt) at 40 °C and petrolatums. Method B is often preferred for pale coloured, low viscosity oils such as transformer oil. Method C is used to calculate organic acidity.
NOTE 1: Oils containing additives may give erroneous results.
NOTE 2: If there is elemental sulfur in solution, method A should be used, as method B may give rise to erroneous results due to interference with the indicator.
NOTE 3: The acidity of oxidized oils may also be determined by this method but precision has yet to be established.
NOTE 4: Results obtained by IP 139 are generally comparable with those obtained by method A of this standard, though with some oils, particularly used oil and those containing additives, there is a tendency for higher figures to be obtained.
Identical with IP 1/94.
Failed to load document history.
| Publish Date | Document Id | Type | View |
|---|