Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents and materials
6 Apparatus
7 Preparation of test samples
8 Calculation of test portion
9 Selection of solvent
10 Procedure
11 Expression of results
12 Repeatability and reproducibility
13 Relationship between the viscosity number determined
in 96% (by mass) sulfuric acid solution and the viscosity
determined in various solvents
14 Test report
Annex A (informative) - Determination of the concentration of
commercial sulfuric acid (95% to 98%) and adjustment
to 96% by titration
Annex B (informative) - Determination of the concentration of
sulfuric acid (95% to 98%) and adjustment to 96% by
flow time measurement in a small capillary viscometer
Annex C (informative) - Determination of the concentration of
commercial formic acid and adjustment to 90% by titration
Annex D (informative) - Determination of the concentration of
commercial formic acid and adjustment to 90% by
density measurement
Annex E (informative) - Relationship between the viscosity
number determined in 96% (by mass) sulfuric acid
solution and the viscosity determined in various
solvents acid, 90% (by mass) formic acid and
m-cresol
Bibliography