HS code · 6-digit subheading
HS Code 2920.21 – Esters; phosphite esters and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives, dimethyl phosphite
HS code 2920.21 is the 6-digit subheading for esters, phosphite esters and their salts, their halogenated, sulphonated, nitrated or nitrosated derivatives, dimethyl phosphite. It is used for dimethyl phosphite, DMPI, dimethyl hydrogen phosphite, phosphonic acid dimethyl ester and intermediate chemical.
What HS 2920.21 covers
This HS code specifically covers dimethyl phosphite, a vital chemical intermediate in organic synthesis. It is extensively utilized in the production of a wide array of pesticides, pharmaceuticals, flame retardants, and other specialty chemicals. Its international trade primarily involves specialized chemical manufacturers exporting the compound from production hubs, and various industrial sectors, particularly agrochemical and pharmaceutical companies, importing it for further synthesis and product development. The demand for dimethyl phosphite is driven by the continuous need for new and improved agrochemicals and pharmaceutical active ingredients, making it a significant component in the global fine chemical supply chain.
- Covers
- Dimethyl phosphite
- DMPI
- Dimethyl hydrogen phosphite
- Phosphonic acid dimethyl ester
- Intermediate chemical
- Examples
- Lanxess (specialty chemicals)
- Arkema (chemical intermediates)
- Jiangsu Yangnong Chemical Group (agrochemical intermediates)
Codes often confused with 2920.21
Common mistake. Other phosphite esters like diethyl phosphite (292022) or trimethyl phosphite (292023) are distinct. Misclassification occurs if the specific alkyl group is not correctly identified.
Top exporters and importers of HS code 292021, 2025
In 2025, the largest exporter of HS code 292021 in UN Comtrade data was Germany, with 50% of world exports; the largest importer in UN Comtrade data was the United States, with 32% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Top exporters 2025 · share of world exports
- 1 Germany $3.2M 50% of world exports
- 2 India $1.2M 19% of world exports
- 3 United States $1.1M 17% of world exports
World total: $6.4M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 United States $1.9M 32% of world imports
- 2 Italy $977K 16% of world imports
- 3 Poland $789K 13% of world imports
World total: $6.0M 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 code for 2920.21
Brazil does not split HS 2920.21: its NCM code is 2920.21.00.
All Brazil NCM codes in heading 29.20 →
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.
Questions about HS 2920.21
What is HS code 292021?
HS code 292021 is a 6-digit subheading in the Harmonized System that covers: Esters; phosphite esters and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives, dimethyl phosphite. This HS code specifically covers dimethyl phosphite, a vital chemical intermediate in organic synthesis. It is extensively utilized in the production of a wide array of pesticides, pharmaceuticals, flame retardants, and other specialty chemicals. Its international trade primarily involves specialized chemical manufacturers exporting the compound from production hubs, and various industrial sectors, particularly agrochemical and pharmaceutical companies, importing it for further synthesis and product development. The demand for dimethyl phosphite is driven by the continuous need for new and improved agrochemicals and pharmaceutical active ingredients, making it a significant component in the global fine chemical supply chain.
What products fall under HS code 292021?
Dimethyl phosphite, DMPI, dimethyl hydrogen phosphite, phosphonic acid dimethyl ester, intermediate chemical
What are common misclassifications for HS code 292021?
Other phosphite esters like diethyl phosphite (292022) or trimethyl phosphite (292023) are distinct. Misclassification occurs if the specific alkyl group is not correctly identified.
Which countries are the top exporters of goods under HS code 292021?
In 2025, the top exporters of HS code 292021 in UN Comtrade data were Germany ($3.2M, 50% of world exports), India ($1.2M) and the United States ($1.1M). World exports came to about $6.4M, 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 goods under HS code 292021?
In 2025, the top importers of HS code 292021 in UN Comtrade data were the United States ($1.9M, 32% of world imports), Italy ($977K) and Poland ($789K). World imports came to about $6.0M, 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.
How is HS code 292021 structured?
HS code 292021 is a 6-digit subheading under the Harmonized System. The first 2 digits (29) identify the chapter, digits 3-4 (20) identify the heading, and digits 5-6 (21) specify the subheading. This code is standardized globally by the World Customs Organization.
What is the Brazil NCM code for HS code 292021?
In Brazil, HS code 292021 is NCM 2920.21.00. The last two digits are 00 because Brazil does not split this HS code further.