Analysis
HTS 2936.23.00 covers vitamin B2 (Riboflavin) and its derivatives under heading 2936 (provitamins and vitamins, natural or reproduced by synthesis (including natural…).
Goods classified here enter the United States duty-free at the general (normal trade relations) rate, as do about 26% of the 1050 tariff lines in chapter 29. Free here means free of the base duty only: origin-specific Chapter 99 duties such as Section 301 can still be owed.
Census statistics map these goods to NAICS 325411 (Medicinal and Botanical Manufacturing), an industry of 761 US establishments employing 30,382 people. That is the industry code a US manufacturer of the same product would normally use.
All 12 neighbouring lines carry the same duty-free rate, so a borderline choice between them changes the statistics reported, not the duty paid.
The general rate of Free has not changed in any edition of the schedule since Jan 2023.
Neighbouring lines
| Line | Description | General rate |
|---|---|---|
| 2936.21.00 | Vitamins A and their derivatives | Free |
| 2936.22.00 | Vitamin B1 (Thiamine) and its derivatives | Free |
| 2936.24.01 | D- or DL-Pantothenic acid (Vitamin B5) and its derivatives | Free |
| 2936.25.00 | Vitamin B6 (Pyridoxine and related compounds with Vitamin B6 activity) and its derivatives | Free |
| 2936.26.00 | Vitamin B12 (Cyanocobalamin and related compounds with Vitamin B12 activity) and its derivatives | Free |
| 2936.27.00 | Vitamin C (Ascorbic acid) and its derivatives | Free |
| 2936.28.00 | Vitamin E (Tocopherols and related compounds with Vitamin E activity) and its derivatives | Free |
| 2936.29.10 | Other vitamins and their derivatives: folic acid | Free |
| 2936.29.16 | Niacin and niacinamide | Free |
| 2936.29.20 | Aromatic or modified aromatic | Free |
| 2936.29.50 | Other: other | Free |
| 2936.90.01 | Provitamins and vitamins, natural or reproduced by synthesis (including natural concentrates), derivatives thereof used primarily as vitamins, and intermixtures of the foregoing, whether or not in any solvent: other, including provitamins and natural concentrates | Free |