Colgate-Palmolive imported tetranyl L1-905, a product used in making fabric softener and conditioner (StaSoft), from Spain. Tetranyl is a quaternary ammonium compound imported in paste form mixed with isopropanol to facilitate handling and transport. It combines triethanolime with partially hydrogenated tallow acid obtained from animal fat. Its main functions are to improve fabric softness, reduce static electricity buildup, reduce wrinkling, and provide water-repellent properties. The Commissioner for SARS claimed arrear duties and penalties totaling R3,377,732, contending that tetranyl was dutiable under tariff heading 3402.12 (Organic Surface-active Agents) of the Customs and Excise Act 91 of 1964. Colgate contended that no duty was payable as tetranyl fell under tariff heading 3809.91 (Finishing agents used in textile industries), which is non-dutiable. The matter proceeded to the KwaZulu-Natal High Court where expert evidence was heard from chemists on both sides regarding the properties and classification of tetranyl.