Exemption notification terms control duty liability; extra grade or end-use conditions cannot be added, while fertiliser-linked concession remains conditional.

Exemption notifications must be applied according to their express terms: ammonium chloride sold to battery manufacturers remained exempt because the notification did not impose additional grade, purity, or technical-classification conditions, and the department could not read such limits into the text. The limitation finding in favour of the assessee also remained final because it had not been challenged by review or cross-objection and could not be reopened. By contrast, concessional assessment for naphtha was unavailable where ammonia was sold for non-fertiliser use, because the notification extended relief only where the input was linked to fertiliser manufacture.

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Issues: (i) Whether the demand was barred by limitation and whether the finding on limitation in favour of the appellants could be disturbed; (ii) whether ammonium chloride sold to battery manufacturers was liable to duty or was covered by the relevant exemption; (iii) whether naphtha used in ammonia sold for non-fertilizer use was entitled to concessional assessment under the fertiliser notification.

Issue (i): Whether the demand was barred by limitation and whether the finding on limitation in favour of the appellants could be disturbed.

Analysis: The Appellate Collector had granted the appellants the benefit of limitation and the Revenue neither sought review of that finding nor filed any cross-objection before the Tribunal. The earlier revisional order had already been quashed, and the limitation finding had attained finality. Even if the proper demand provision might have been Rule 196, the Tribunal could not unsettle the unchallenged finding in the appellants' favour.

Conclusion: The limitation finding in favour of the appellants stood and could not be reopened.

Issue (ii): Whether ammonium chloride sold to battery manufacturers was liable to duty or was covered by the relevant exemption.

Analysis: Notification No. 164/69 did not qualify ammonium chloride by grade, purity, or technical classification. The tariff also did not create any distinction between technical grade and fertiliser grade. Where ammonium chloride was intended for use in dry cell batteries, the notification specifically granted exemption, and end-use or departmental attempts to create artificial grades could not override the express wording of the notification.

Conclusion: Ammonium chloride sold to battery manufacturers was held exempt and no duty was leviable.

Issue (iii): Whether naphtha used in ammonia sold for non-fertilizer use was entitled to concessional assessment under the fertiliser notification.

Analysis: Notification No. 187/61 granted concessional duty only where naphtha was intended for use in the manufacture of fertiliser, and also extended to naphtha used in ammonia only where such ammonia was itself used in fertiliser manufacture. Ammonia sold directly for non-fertiliser purposes did not satisfy that condition. The Tribunal therefore rejected the claim that such naphtha qualified for concessional assessment.

Conclusion: The claim for concessional duty on naphtha used in ammonia sold for non-fertilizer use was rejected.

Final Conclusion: The appellants succeeded on the exemption issue relating to ammonium chloride and on the finality of the limitation finding, but failed on the claim relating to ammonia sold for non-fertilizer use; the appeals were accordingly disposed of by granting relief only in part.

Ratio Decidendi: Where an exemption notification expressly covers a commodity by description, the department cannot deny the benefit by adding extra requirements such as grade or end-use beyond the notification, but concessional duty is unavailable when the statutory condition linking the input to fertiliser manufacture is not satisfied.

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