o-Diquat Dibromide USP/Pharmaceutical Grade
High-purity o-diquat dibromide meeting USP standards for pharmaceutical research applications. Classified under HTS 2933.99.1600 as the specific heterocyclic pesticide compound despite research use claims. Used in toxicology studies and herbicide efficacy research.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If certified for medicinal/herbicide use with different purity specs
Other specifically named heterocyclic compounds for medicinal use have separate provisions.
If imported as reagent for immunological product manufacturing
Chapter 29 excludes immunological products of heading 3002, shifting classification based on end use.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Provide Certificate of Analysis (CoA) showing >99% purity and USP compliance to distinguish from technical grade
• End-use statement clarifying research purposes may be required to avoid FIFRA pesticide restrictions
• Segregate from formulated products during storage to prevent cross-contamination classification issues
Related Products under HTS 2933.99.16.00
o-Diquat Dibromide Technical Grade
Pure o-diquat dibromide (1,1'-ethylene-2,2'-dipyridylium dibromide) in technical grade form used as the active ingredient in herbicide formulations. This aromatic heterocyclic nitrogen compound falls under HTS 2933.99.1600 as a specific pesticide chemical. It is imported for mixing into aquatic herbicide products.
Diquat Dibromide 37% SL Herbicide Concentrate
Liquid herbicide concentrate containing 37% o-diquat dibromide active ingredient in water-based slurry. While containing the HTS 2933.99.1600 compound, it's often scrutinized for formulation status. Used for aquatic weed control in ponds and irrigation canals.
Diquat Dibromide 200 g/L Aquatic Herbicide
Liquid formulation with 200 g/L o-diquat dibromide for professional aquatic weed management. Falls under HTS 2933.99.1600 when imported as high-concentration active ingredient solution. Controls submerged weeds in lakes and reservoirs.
o-Diquat Dibromide Reference Standard
Certified reference material of o-diquat dibromide for analytical laboratory use in pesticide residue testing. Precisely classified under HTS 2933.99.1600 as the pure heterocyclic compound. Used for GC-MS calibration in environmental monitoring.