HS code · 6-digit subheading
HS Code 2303.10 – Residues of starch manufacture and similar residues; whether or not in the form of pellets
HS code 2303.10 is the 6-digit subheading for residues of starch manufacture and similar residues, whether or not in the form of pellets. It is used for corn gluten feed, potato protein, wheat gluten feed, rice bran and cassava pulp.
What HS 2303.10 covers
This HS code encompasses the various solid by-products generated during the industrial processing of starches, primarily from corn, wheat, potatoes, or rice. These residues, often in the form of meals, pellets, or fibrous material, are highly valued in international trade, predominantly as cost-effective ingredients for animal feed due to their protein, fiber, and energy content. They also find applications in bio-ethanol production and other industrial uses. Major importers are countries with large livestock industries or bio-refineries, while exporters are typically large agricultural processing nations. Key things to know include the varying nutritional profiles based on the starch source and the importance of consistent quality for feed formulations.
- Covers
- Corn gluten feed
- Potato protein
- Wheat gluten feed
- Rice bran
- Cassava pulp
- Starch processing waste
- Corn steep liquor
- Tapioca residue pellets
- Examples
- Cargill Corn Gluten Feed
- ADM Wheat Gluten Feed
- Roquette Potato Protein
- Tate & Lyle Starch Residues
- Ingredion Starch By-products
Codes often confused with 2303.10
Common mistake. This code can be confused with 2309 (preparations of a kind used in animal feeding) if the residues are further processed into compound feeds, or 1104 (cereal grains otherwise worked) if not clearly a residue from starch extraction.
Top exporters and importers of HS code 230310, 2025
In 2025, the largest exporter of HS code 230310 in UN Comtrade data was the United States, with 34% of world exports; the largest importer in UN Comtrade data was Indonesia, with 9.6% 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 United States $547M 34% of world exports
- 2 China $390M 24% of world exports
- 3 France $96M 5.9% of world exports
World total: $1.6B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Indonesia $170M 9.6% of world imports
- 2 South Korea $162M 9.2% of world imports
- 3 Netherlands $149M 8.4% of world imports
World total: $1.8B 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 2303.10
Brazil does not split HS 2303.10: its NCM code is 2303.10.00.
All Brazil NCM codes in heading 23.03 →
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.
Questions about HS 2303.10
What is HS code 230310?
HS code 230310 is a 6-digit subheading in the Harmonized System that covers: Residues of starch manufacture and similar residues; whether or not in the form of pellets. This HS code encompasses the various solid by-products generated during the industrial processing of starches, primarily from corn, wheat, potatoes, or rice. These residues, often in the form of meals, pellets, or fibrous material, are highly valued in international trade, predominantly as cost-effective ingredients for animal feed due to their protein, fiber, and energy content. They also find applications in bio-ethanol production and other industrial uses. Major importers are countries with large livestock industries or bio-refineries, while exporters are typically large agricultural processing nations. Key things to know include the varying nutritional profiles based on the starch source and the importance of consistent quality for feed formulations.
What products fall under HS code 230310?
Corn gluten feed, Potato protein, Wheat gluten feed, Rice bran, Cassava pulp, Starch processing waste, Corn steep liquor, Tapioca residue pellets
What are common misclassifications for HS code 230310?
This code can be confused with 2309 (preparations of a kind used in animal feeding) if the residues are further processed into compound feeds, or 1104 (cereal grains otherwise worked) if not clearly a residue from starch extraction.
Which countries are the top exporters of goods under HS code 230310?
In 2025, the top exporters of HS code 230310 in UN Comtrade data were the United States ($547M, 34% of world exports), China ($390M) and France ($96M). World exports came to about $1.6B, 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 230310?
In 2025, the top importers of HS code 230310 in UN Comtrade data were Indonesia ($170M, 9.6% of world imports), South Korea ($162M) and the Netherlands ($149M). World imports came to about $1.8B, 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 230310 structured?
HS code 230310 is a 6-digit subheading under the Harmonized System. The first 2 digits (23) identify the chapter, digits 3-4 (03) identify the heading, and digits 5-6 (10) specify the subheading. This code is standardized globally by the World Customs Organization.
What is the Brazil NCM code for HS code 230310?
In Brazil, HS code 230310 is NCM 2303.10.00. The last two digits are 00 because Brazil does not split this HS code further.