Niacin USP Powder
Pharmaceutical-grade niacin (nicotinic acid) powder meeting USP standards, used primarily as a vitamin B3 supplement for nutritional and therapeutic purposes. This chemically defined organic compound falls under HTS 2936.29.16.20 as 'other' niacin, unmixed and not in dosage form. It is commonly imported for use in dietary supplements and fortification of foods.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If containing additives like stabilizers exceeding incidental levels
Mixtures or intermixtures of vitamins with other substances fall under the 'other' unmixed vitamins provision later in numerical order.
If tableted, capsulated, or packaged for retail sale
Products put up in dosage forms or packings for retail therapeutic use are classified in Chapter 30 as medicaments, not bulk chemicals.
If imported as a formulated feed additive premix
Chemical preparations for animal feed compounding are classified as mixtures in Chapter 38 rather than pure provitamins.
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) confirming ≥99% purity and USP compliance to verify classification as unmixed niacin
• Include documentation proving use primarily as a vitamin, not as a pharmaceutical intermediate, to avoid reclassification
• Ensure proper labeling with CAS number 59-67-6 and batch-specific stability data to prevent FDA holds at entry
Related Products under HTS 2936.29.16.20
Niacin FG (Feed Grade) 99%
High-purity nicotinic acid powder (99% minimum) certified for animal nutrition, serving as vitamin B3 precursor in livestock feed formulations. Classified under HTS 2936.29.16.20 as synthetic niacin used primarily as a vitamin, meeting chapter requirements for separate chemically defined compounds. Essential for preventing pellagra in target species and optimizing growth.
Synthetic Nicotinic Acid EP/BP Grade
European Pharmacopoeia/British Pharmacopoeia compliant niacin powder for pharmaceutical compounding and nutraceutical manufacturing. This synthetic reproduction of natural vitamin B3 qualifies under HTS 2936.29.16.20 as unmixed niacin derivative used primarily as a vitamin. Imported in bulk for high-potency supplement production.
Niacin Bulk Crystals 99.5% Pure
Crystalline nicotinic acid at 99.5% purity, packaged in 25kg fiber drums for industrial vitamin processing. Falls under HTS 2936.29.16.20 as synthetic niacin used primarily as vitamin B3 source in food fortification and supplements. Meets chapter note requirements for separate chemically defined organic compounds without functional additives.
Vitamin B3 Niacin Technical Grade
Technical grade nicotinic acid (98% min) for large-scale vitamin production and research applications. Classified as HTS 2936.29.16.20 'other' niacin due to primary vitamin functionality despite lower specification than USP grades. Supplied as white to off-white powder in industrial quantities.