Classification of rubber latex solution under Heading 4005 denied exemption tied to Heading 4001 goods.

Rubber latex solution was held classifiable under Heading 4005 rather than Heading 4001 because the material was found in liquid form and the record did not show that it retained the essential character of raw or vulcanized rubber. The technical material noted that vulcanization produces a thermoset, elastic material, which was inconsistent with the liquid condition of the goods, and a later test report could not be applied to the earlier period without proof that the goods were unchanged. As the goods were classified under Heading 4005, the benefit of Notification No. 250/86, which was limited to Heading 4001 goods, was not available.

---

---

Issues: (i) Whether the product described as rubber latex solution was classifiable under Heading 4005 or Heading 4001, and whether it could be treated as vulcanized rubber; (ii) Whether the benefit of Notification No. 250/86 was available.

Issue (i): Whether the product described as rubber latex solution was classifiable under Heading 4005 or Heading 4001, and whether it could be treated as vulcanized rubber.

Analysis: The later test report showing the sample as a white liquid and an aqueous dispersion of natural rubber and organic chemicals could not be applied to the earlier period without showing that the goods remained unchanged. On the technical material relied upon, vulcanization converts rubber into a thermoset with elasticity, which is inconsistent with a liquid form. Since the product was found in liquid form, it could not be treated as vulcanized rubber. The record also did not establish that the goods retained the essential character of raw rubber despite the presence of additives.

Conclusion: The product was correctly classified under Heading 4005 and not under Heading 4001.

Issue (ii): Whether the benefit of Notification No. 250/86 was available.

Analysis: The notification was confined to goods classifiable under Heading 4001. As the goods were held to fall under Heading 4005, the precondition for exemption was not satisfied.

Conclusion: The benefit of the notification was not available.

Final Conclusion: The Department's challenge succeeded, the classification adopted by the lower appellate authority was set aside, and the duty demand was restored.

Ratio Decidendi: A later test report cannot govern an earlier period unless identity of goods is shown, and a product found in liquid form cannot be treated as vulcanized rubber where vulcanization implies a thermoset, elastic material; exemption tied to a specific tariff heading is unavailable once the goods are classified elsewhere.

---