“DETERMINATION OF ACTIVE DETERGENT CONTENT OF "Rin" POWDER” & “COMPARATIVE ANALYSIS OF THE CORRELATION OF IODINE VALUE FROM TWO DIFFERENT METHODS”

Abstract

DETERMINATION OF ACTIVE DETERGENT CONTENT OF "Rin" POWDER "Rin" is a popular detergent powder formulation in the Sri Lankan market. It has an Anionic Detergent (AD) as the active ingredient. It is vital to maintain the level of the active ingredient at the optimum. This is an essential factor for the performance in laundering. Therefore % AD contents of 30 Rin samples were determined according to a method described in the Unilever Methods of Analysis over a period of two months. The average % AD content was 15.1±0.63. The Unilever specification of % AD in Rin is 14.0±1. During the period of two month the % AD level is higher. COMPARATIVE ANALYSIS OF THE CORRELATION OF IODINE VALUE FROM TWO DIFFERENT METHODS The iodine value (IV) is a measure of the unsaturation of fats and oils and is expressed in terms of the number of centigrams of iodine absorbed per gram of sample. The IVs for Toilet Blend oil samples were calculated using two methods. 1. Wijs method 2. GLC method Wijs method is based on the iodometric determination of the iodine absorbed to the (C=C) double bonds. Iodine Value from the GLC method was obtained by a theoretical calculation using fatty acid profile.