DR. KOHLI AND ORS. vs ATUL PRODUCTS LTD.

The Supreme Court addressed the applicability of the Central Excise and Salt Act, 1944, specifically Item 84D and the Ministry of Finance Notification No. 180/61, regarding the exemption of excise duty on synthetic organic dyestuffs. The Court held that the exemption can only be claimed if the dyes were manufactured from other dyes on which excise duty had already been paid. It established that the doctrine of promissory estoppel does not apply when the manufacturer voluntarily paid excise duty without any detrimental reliance on the department's representations. The Court ultimately ruled against the respondent's claim for exemption, affirming the duty assessment made by the authorities.