Zinc dust classification under customs notification treated as separate from zinc powder, attracting the lower duty rate.

Imported zinc dust was held to be commercially and materially distinct from zinc powder for classification under Notification No. 44-Cus. dated 1-3-1983. The tariff heading then in force did not separately name zinc dust, so the Tribunal used the explanatory notes to the revised HSN to distinguish the two products. Those notes treated zinc dust and zinc powder as separate commodities, and that distinction supported classification of zinc dust under the residual category of "others" rather than as zinc powder. The lower duty rate therefore applied.

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Issues: Whether imported zinc dust was classifiable as zinc powder for the purpose of Notification No. 44-Cus. dated 1-3-1983, or whether it fell under the residual category of "others" and attracted the lower rate of duty.

Analysis: The notification prescribed a higher rate for zinc powders and flakes and a lower rate for "others" under heading 79.03. The tariff heading then in force did not separately mention zinc dust, but the Tribunal relied on the explanatory notes under the revised HSN to understand the distinction between zinc dust and zinc powder. Those notes treated zinc dust and zinc powders as separate products, and the distinguishing criteria showed that zinc dust is commercially and materially different from zinc powder. Even though the later HSN notes were not directly applicable to the earlier period, they provided a reasonable basis for identifying the two commodities as distinct.

Conclusion: Zinc dust could not be treated as zinc powder for the purpose of the notification. It was eligible for classification under "others" and for the lower duty rate. The appeal succeeded.

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