BS ISO 3771:2011
Current
The latest, up-to-date edition.
Petroleum products. Determination of base number. Perchloric acid potentiometric titration method
Hardcopy , PDF
English
30-09-2011
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents
6 Apparatus
7 Preparation of test sample
8 Preparation of electrode system
9 Performance
10 Calculation of base number
11 Expression of results
12 Precision
13 Test report
Describes a method for the determination of basic constituents in petroleum products by potentiometric titration with perchloric acid in glacial acetic acid.
| Committee |
PTI/13
|
| DevelopmentNote |
Also numbered as BS 2000-276(2011). Supersedes BS 2000-276(1995) and 08/30178957 DC. (09/2011)
|
| DocumentType |
Standard
|
| Pages |
18
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
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.
| Standards | Relationship |
| ISO 3771:2011 | Identical |
| ISO 3696:1987 | Water for analytical laboratory use — Specification and test methods |
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