Other
Residual lyes from wood pulp manufacture, including lignin sulphonates
HSN 3804 00 90 (residual lyes from the manufacture of wood pulp — other than those classified under the primary lignin sulphonate line) is not covered by a Bureau of Indian Standards Quality Control Order and carries no Partner Government Agency clearance requirement at the tariff-line level. Import follows the standard customs procedure: Importer-Exporter Code, bill of entry, commercial invoice, packing list. Tall oil, excluded from this heading and classified under Chapter 38 heading 3803, and certain wood-derived chemical products elsewhere in Chapter 38 may carry distinct compliance obligations.
The absence of compliance at this tariff line does not extend to the broader Chapter 38 landscape: concentrated or chemically treated variants, or lyes repurposed as industrial dispersants or binders, may attract re-classification to a more specific tariff line that carries compliance. Re-classification on customs examination triggers retrospective compliance, including detention pending the relevant clearance. Verify the product's processing state, intended use, and lignin sulphonate content against the customs tariff before relying on the absence of compliance here.