ASTM D1541 Test Method for Total Iodine Value of Drying Oils and Their Derivatives
1. Scope
1.1 This test method2 covers the determination of total iodine value.
1.2 This test method is applicable to oils, fatty acids, and bodied oils. While this test method is applicable to all oils and fatty acids and bodied oils, it is particularly useful for those drying oils or derivatives that have conjugated unsaturation.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of whoever uses this standard to consult and establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Specific hazard statements are given in Sections 6 and 7.
2. Referenced Documents
2.1 ASTM Standards:
D1193 Specification for Reagent Water
D1959 Test Method for Iodine Value of Drying Oils and Fatty Acids
3. Terminology
3.1 Definitions:
3.1.1 total iodine value - a measure of the total unsaturation present in fats and oils (Note 1), expressed as the number of centigrams of iodine equivalent to the unsaturation present in 1 g of sample (weight percent of absorbed iodine).
NOTE 1 - When the total iodine value is determined on oils having conjugated systems, the result is a measure of the total unsaturation. This is in contrast to the iodine value method described in Test Method D1959 which determines only part of the total unsaturation of conjugated systems.
