Research Report RR:D11-1078
A test program was completed to measure the residual unsaturation in HNBR by iodine number and infrared spectrophotometry. This report deals with the iodine number approach only. Seven laboratories tested three different HNBR samples with unsaturation levels of <1%, approximately 2% and approximately 5% were used. The iodine results were measured in duplicate on two difference days.
D5902-05(2015) Standard Test Method for Rubber—Determination of Residual Unsaturation in Hydrogenated Nitrile Rubber (HNBR) by Iodine Value
Committee D11 on Rubber
Subcommittee D11.11 on Chemical Analysis