HS code · 6-digit subheading
HS Code 2920.23 – Esters; phosphite esters and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives, trimethyl phosphite
HS code 2920.23 is the 6-digit subheading for esters, phosphite esters and their salts, their halogenated, sulphonated, nitrated or nitrosated derivatives, trimethyl phosphite. It is used for trimethyl phosphite, TMPI, phosphonic acid trimethyl ester, intermediate chemical and ligand for catalysts.
What HS 2920.23 covers
This HS code specifically covers trimethyl phosphite, a versatile chemical intermediate with broad applications. It plays a significant role in the synthesis of various organophosphorus compounds, including certain pesticides, flame retardants, and as a ligand in catalysis. Its international trade involves specialized chemical manufacturers exporting the compound from key production regions, and industries such as agrochemicals, plastics, and pharmaceuticals importing it for use in their manufacturing processes and research. The demand for trimethyl phosphite is driven by its utility in creating complex molecules and its role in advanced chemical reactions, making it a valuable commodity in the specialty chemical market.
- Covers
- Trimethyl phosphite
- TMPI
- Phosphonic acid trimethyl ester
- Intermediate chemical
- Ligand for catalysts
- Examples
- Lanxess (specialty chemicals)
- Arkema (chemical intermediates)
- Jiangsu Yangnong Chemical Group (agrochemical intermediates)
Codes often confused with 2920.23
Common mistake. Often confused with dimethyl phosphite (292021) or triethyl phosphite (292024) if the specific alkyl group (methyl vs. ethyl) is not correctly identified.
Top exporters and importers of HS code 292023, 2025
In 2025, the largest exporter of HS code 292023 in UN Comtrade data was India, with 85% of world exports; the largest importer in UN Comtrade data was Switzerland, with 41% 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 India $13M 85% of world exports
- 2 China $799K 5.0% of world exports
- 3 United States $728K 4.6% of world exports
World total: $16M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Switzerland $7.4M 41% of world imports
- 2 United States $7.4M 41% of world imports
- 3 United Kingdom $685K 3.8% of world imports
World total: $18M 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 2920.23
Brazil does not split HS 2920.23: its NCM code is 2920.23.00.
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 2920.23
What is HS code 292023?
HS code 292023 is a 6-digit subheading in the Harmonized System that covers: Esters; phosphite esters and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives, trimethyl phosphite. This HS code specifically covers trimethyl phosphite, a versatile chemical intermediate with broad applications. It plays a significant role in the synthesis of various organophosphorus compounds, including certain pesticides, flame retardants, and as a ligand in catalysis. Its international trade involves specialized chemical manufacturers exporting the compound from key production regions, and industries such as agrochemicals, plastics, and pharmaceuticals importing it for use in their manufacturing processes and research. The demand for trimethyl phosphite is driven by its utility in creating complex molecules and its role in advanced chemical reactions, making it a valuable commodity in the specialty chemical market.
What products fall under HS code 292023?
Trimethyl phosphite, TMPI, phosphonic acid trimethyl ester, intermediate chemical, ligand for catalysts
What are common misclassifications for HS code 292023?
Often confused with dimethyl phosphite (292021) or triethyl phosphite (292024) if the specific alkyl group (methyl vs. ethyl) is not correctly identified.
Which countries are the top exporters of goods under HS code 292023?
In 2025, the top exporters of HS code 292023 in UN Comtrade data were India ($13M, 85% of world exports), China ($799K) and the United States ($728K). World exports came to about $16M, 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 292023?
In 2025, the top importers of HS code 292023 in UN Comtrade data were Switzerland ($7.4M, 41% of world imports), the United States ($7.4M) and the United Kingdom ($685K). World imports came to about $18M, 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 292023 structured?
HS code 292023 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 (23) specify the subheading. This code is standardized globally by the World Customs Organization.
What is the Brazil NCM code for HS code 292023?
In Brazil, HS code 292023 is NCM 2920.23.00. The last two digits are 00 because Brazil does not split this HS code further.