HS code · 6-digit subheading
HS Code 2931.46 – Non-halogenated organo-phosphorous derivatives; 2,4,6-tripropyl-1,3,5,2,4,6-trioxatriphosphinane 2,4,6-trioxide
HS code 2931.46 is the 6-digit subheading for non-halogenated organo-phosphorous derivatives, 2,4,6-tripropyl-1,3,5,2,4,6-trioxatriphosphinane 2,4,6-trioxide. It is used for 2,4,6-tripropyl-1,3,5,2,4,6-trioxatriphosphinane 2,4,6-trioxide, specialty flame retardant, polymer additive, plasticizer for engineering plastics and chemical synthesis intermediate.
What HS 2931.46 covers
This HS code covers a highly specific non-halogenated organo-phosphorous derivative, 2,4,6-tripropyl-1,3,5,2,4,6-trioxatriphosphinane 2,4,6-trioxide. These specialized chemical intermediates are crucial in various industrial applications, often serving as flame retardants, plasticizers, or additives in polymers and resins. Importers typically include chemical manufacturers, polymer producers, and companies in the electronics and construction sectors seeking to enhance material properties. Exporters are usually large-scale chemical producers with advanced synthesis capabilities. Key things to know involve the compound's precise chemical structure, its role in improving material safety and performance, and the stringent quality control required for its production and trade. Its non-halogenated nature is often preferred for environmental reasons, driving demand in certain markets.
- Covers
- 2,4,6-tripropyl-1,3,5,2,4,6-trioxatriphosphinane 2,4,6-trioxide
- Specialty flame retardant
- Polymer additive
- Plasticizer for engineering plastics
- Chemical synthesis intermediate
- Examples
- Lanxess (Additives)
- ICL Group (Performance Products)
- Chemtura (now Lanxess)
- BASF (Specialty Chemicals)
Codes often confused with 2931.46
Common mistake. This specific compound might be confused with other non-halogenated organo-phosphorous derivatives under 2931.49 if its exact chemical identity is not clearly stated, or with other phosphorus compounds in Chapter 28 if the organic component is overlooked.
Top exporters and importers of HS code 293146, 2025
In 2025, the largest exporter of HS code 293146 in UN Comtrade data was Taiwan, with about 79% of world exports; the largest importer in UN Comtrade data was South Korea, with 26% 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 Taiwan* ~$68K 79% of world exports · partner records ↗
- 2 Belgium $9K 11% of world exports
- 3 Latvia $6K 6.4% of world exports
World total: $87K Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 South Korea $647K 26% of world imports
- 2 Japan $487K 20% of world imports
- 3 United States $363K 15% of world imports
World total: $2.5M 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 marked * did not, so their figures add up what other countries recorded trading with them, and their exports are valued at buyers' CIF prices. 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. UN Comtrade records Taiwan as "Other Asia, not elsewhere specified". Saudi Arabia's exports under that code are left out: they are far too large to be trade with Taiwan, so mostly undisclosed partners. 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 2931.46
Brazil does not split HS 2931.46: its NCM code is 2931.46.00.
All Brazil NCM codes in heading 29.31 →
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.
Questions about HS 2931.46
What is HS code 293146?
HS code 293146 is a 6-digit subheading in the Harmonized System that covers: Non-halogenated organo-phosphorous derivatives; 2,4,6-tripropyl-1,3,5,2,4,6-trioxatriphosphinane 2,4,6-trioxide. This HS code covers a highly specific non-halogenated organo-phosphorous derivative, 2,4,6-tripropyl-1,3,5,2,4,6-trioxatriphosphinane 2,4,6-trioxide. These specialized chemical intermediates are crucial in various industrial applications, often serving as flame retardants, plasticizers, or additives in polymers and resins. Importers typically include chemical manufacturers, polymer producers, and companies in the electronics and construction sectors seeking to enhance material properties. Exporters are usually large-scale chemical producers with advanced synthesis capabilities. Key things to know involve the compound's precise chemical structure, its role in improving material safety and performance, and the stringent quality control required for its production and trade. Its non-halogenated nature is often preferred for environmental reasons, driving demand in certain markets.
What products fall under HS code 293146?
2,4,6-tripropyl-1,3,5,2,4,6-trioxatriphosphinane 2,4,6-trioxide, specialty flame retardant, polymer additive, plasticizer for engineering plastics, chemical synthesis intermediate
What are common misclassifications for HS code 293146?
This specific compound might be confused with other non-halogenated organo-phosphorous derivatives under 2931.49 if its exact chemical identity is not clearly stated, or with other phosphorus compounds in Chapter 28 if the organic component is overlooked.
Which countries are the top exporters of goods under HS code 293146?
In 2025, the top exporters of HS code 293146 in UN Comtrade data were Taiwan (about $68K, 79% of world exports), Belgium ($9K) and Latvia ($6K). World exports came to about $87K, 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 293146?
In 2025, the top importers of HS code 293146 in UN Comtrade data were South Korea ($647K, 26% of world imports), Japan ($487K) and the United States ($363K). World imports came to about $2.5M, 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 293146 structured?
HS code 293146 is a 6-digit subheading under the Harmonized System. The first 2 digits (29) identify the chapter, digits 3-4 (31) identify the heading, and digits 5-6 (46) specify the subheading. This code is standardized globally by the World Customs Organization.
What is the Brazil NCM code for HS code 293146?
In Brazil, HS code 293146 is NCM 2931.46.00. The last two digits are 00 because Brazil does not split this HS code further.