PEROXIDE NUMBER OF PETROLEUM WAX: ASTM D1832
EXPLANATION
Deterioration of petroleum wax results in the formation of peroxides and other oxygen-containing compounds. The peroxide number measures those compounds that will oxidize potassium iodide. Thus the magnitude of the peroxide number is an indication of the quantity of oxidizing constituents present.
TEST SUMMARY
A sample is dissolved in xylenes and is acidified with acetic acid. A solution of potassium iodide is added, and after a reaction period, the solution is titrated with sodium thiosulfate using a starch indicator.
TEST PRECISION
This test method has a repeatability of 1.5 and a reproducibility of 3.3 in the peroxide number range of 0 to 15.
This test method has no bias.
