Product classification

HS code for Vitamin B1: 2936.22

Vitamins, vitamin B1 and its derivatives, unmixed.

Classification of vitamin B1 under HS 2936.22

Vitamin B1, chemically known as thiamine, is classified under HS code 2936.22. This classification is determined by the General Rules for the Interpretation of the Harmonized System (GRI), specifically focusing on Chapter 29 for organic chemicals. Heading 2936 covers vitamins and their derivatives. Subheading 2936.22 is specifically designated for Vitamin B1 and its derivatives, such as thiamine hydrochloride and thiamine mononitrate, provided they are not mixed with other substances except for stabilization or transport purposes. The classification depends on the chemical identity of the substance as a vitamin. If the product is presented in a form that includes additives for nutritional purposes or is packaged for retail sale as a dietary supplement, it may move to other chapters, but the bulk chemical substance remains strictly under 2936.22. This code is essential for international trade to ensure that pure thiamine products are distinguished from other heterocyclic compounds. The purity and the specific chemical structure of the thiamine molecule are the primary factors that customs authorities use to verify the application of this specific subheading.

Covers
  • Thiamine hydrochloride
  • Thiamine mononitrate
  • Thiamine chloride
  • Thiamine phosphate esters
  • Pure thiamine powder
Also under 2936.22
  • DSM
  • BASF
  • Zhejiang Medicine Co.
  • Ltd.
  • Brother Enterprises
  • Huazhong Pharmaceutical

Codes often confused with 2936.22

Common mistake. Vitamin B1 is often misclassified under HS code 2933.59, which covers heterocyclic compounds with a pyrimidine ring. While thiamine does contain a pyrimidine ring, Note 1 to Chapter 29 and the specific heading for vitamins (2936) take precedence. It is also sometimes incorrectly placed in 2106.90 when intended for use as a food additive in mixtures.

2933.59Heterocyclic compounds; containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure, (other than malonylurea and its derivatives, loprazolam, mecloqualone, methaqualone, zipeprol, and salts thereof) n.e.c. in 2933.529.36Provitamins, vitamins; natural or reproduced by synthesis (including natural concentrates) derivatives thereof used as vitamins, and intermixtures of the fore-going, whether or not in any solvent2106.90Food preparations; n.e.c. in item no. 2106.10

Top exporters and importers of HS 293622 (the code used for vitamin B1), 2025

In 2025, the largest exporter of HS 293622 (the code used for vitamin B1) in UN Comtrade data was China, with 51% of world exports; the largest importer in UN Comtrade data was the Netherlands, with 22% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.

Figures cover everything classified under HS 293622, not only vitamin B1.

Top exporters 2025 · share of world exports

  1. 1 China $263M
  2. 2 Netherlands $100M
  3. 3 Germany $88M

World total: $521M Reported figures on UN Comtrade ↗

Top importers 2025 · share of world imports

  1. 1 Netherlands $109M
  2. 2 United States $69M
  3. 3 India $27M

World total: $498M Reported figures on UN Comtrade ↗

How these figures are built

109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries that did not report are estimated from what other countries recorded trading with them. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).

Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.

Brazil NCM codes for vitamin B1

Brazil splits HS 2936.22 into 3 NCM codes. Pick the one that matches your product:

Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.

Questions about vitamin B1

What is the HS code for Vitamin B1?

The HS code for Vitamin B1 is 293622 (Vitamins; vitamin B1 and its derivatives, unmixed). The HS code for Vitamin B1 and its derivatives is 2936.22.

How do I classify Vitamin B1 for customs?

Vitamin B1 is classified under HS code 293622 — Vitamins; vitamin B1 and its derivatives, unmixed. This is a 6-digit subheading level code.

Is thiamine mononitrate included under this code?

Yes, thiamine mononitrate is a derivative of Vitamin B1 and is specifically classified under HS code 2936.22.

Which countries are the top exporters of vitamin B1 (HS 293622)?

In 2025, the top exporters of HS 293622 (the code used for vitamin B1) in UN Comtrade data were China ($263M, 51% of world exports), the Netherlands ($100M) and Germany ($88M). World exports came to about $521M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.

Which countries are the top importers of vitamin B1 (HS 293622)?

In 2025, the top importers of HS 293622 (the code used for vitamin B1) in UN Comtrade data were the Netherlands ($109M, 22% of world imports), the United States ($69M) and India ($27M). World imports came to about $498M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.

Is the HS code for Vitamin B1 the same in all countries?

The base HS code 293622 for Vitamin B1 is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.

What is the NCM code for vitamin B1 in Brazil?

Brazil splits HS 293622 into 3 NCM codes, so the right one for vitamin B1 depends on the product's details: 2936.22.10 (Thiamine (vitamin B1) hydrochloride), 2936.22.20 (Thiamine (vitamin B1) mononitrate), 2936.22.90 (Other vitamin B1 (thiamine) and derivatives).