Bulk drug exemption and limitation: medicinal ingredient status and full disclosure defeated excise demand and extended time-bar.

Potassium mercuric iodide concentrated solution was treated as a bulk drug because it corresponded to pharmacopoeial standards, was shown by technical literature to be a recognised medicinal substance, and was used as an ingredient in a medicated formulation; its concentrated form did not prevent exemption under the excise notification. The demand was also time-barred because the assessee had disclosed the product through classification lists, drug licence records and returns, and the Department had earlier accepted the classification, leaving no basis for suppression or wilful misdeclaration to invoke the extended limitation period.

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Issues: (i) Whether potassium mercuric iodide concentrated solution qualified as a bulk drug entitled to exemption under the relevant excise notifications. (ii) Whether the demand was barred by limitation for want of suppression or misdeclaration.

Issue (i): Whether potassium mercuric iodide concentrated solution qualified as a bulk drug entitled to exemption under the relevant excise notifications.

Analysis: The definition of bulk drug in the notification covered chemical products conforming to pharmacopoeial standards and used for diagnosis, treatment, mitigation or prevention of disease, either as such or as an ingredient in a formulation. The product was shown by technical literature to correspond to a recognised medicinal substance and was used as an ingredient in medicated soap manufactured under drug licence. The fact that the product was in concentrated form and used in a small proportion in the final formulation did not detract from its character as a bulk drug. A bulk drug is often bought in bulk and later diluted or combined in formulation, and direct therapeutic use in the same concentration is not required.

Conclusion: The product was a bulk drug and the assessee was entitled to the exemption. This issue was decided in favour of the assessee.

Issue (ii): Whether the demand was barred by limitation for want of suppression or misdeclaration.

Analysis: The record showed that the assessee had filed classification lists, produced the drug licence, and submitted relevant material to the Department. The product had been accepted in earlier classification proceedings and RT-12 returns had been finalised. On these facts, there was no material to sustain a finding of suppression or wilful misdeclaration so as to invoke the extended period under the proviso to Section 11A.

Conclusion: The demand was time-barred and the extended period could not be invoked. This issue was also decided in favour of the assessee.

Final Conclusion: The excise demand was unsustainable both on merits and on limitation, and the assessee was held entitled to consequential relief.

Ratio Decidendi: A chemical product that conforms to pharmacopoeial standards and is used as an ingredient in a medicinal formulation qualifies as a bulk drug for exemption purposes, and the extended limitation period cannot be invoked absent suppression or misdeclaration where the Department was aware of the manufacture and clearances.

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