ASTM D5902-05e1
Historical Standard: ASTM D5902-05e1 Standard Test Method for Rubber-Determination of Residual Unsaturation in Hydrogenated Nitrile Rubber (HNBR) by Iodine Value
SUPERSEDED (see Active link, below)
ASTM D5902
1. Scope
1.1 This test method covers the Wiijs procedure for the determination of unsaturation (iodine value) in hydrogenated nitrile rubbers.
1.2 This test method is applicable only to those hydrogenated nitrile rubbers derived from copolymers of acrylonitrile and butadiene.
1.3 Iodine values are reported in centigrams of iodine per gram of HNBR [cg(I 2 )/g]. Higher iodine values indicate higher levels of unsaturation.
1.4 This test method is appropriate for calculating the percent residual unsaturation of hydrogenated nitrile rubber if the iodine value of the base polymer before hydrogenation has been determined.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM Standards
D1193 Specification for Reagent Water
D1959 Test Method for Iodine Value of Drying Oils and Fatty Acids
D4483 Practice for Evaluating Precision for Test Method Standards in the Rubber and Carbon Black Manufacturing Industries
Keywords
HNBR; iodine value; residual unsaturation; HNBR (hydrogenated nitrile rubber); Iodine value; Nitrile rubber; Residual unsaturation; Unsaturation; WIJS procedure (iodine value);
ICS Code
ICS Number Code 71.040.40 (Chemical analysis); 83.060 (Rubber)
DOI: 10.1520/D5902-05E01
ASTM International is a member of CrossRef.