HS code · 6-digit subheading
HS Code 2832.10 – Sulphites; of sodium
HS code 2832.10 is the 6-digit subheading for sulphites, of sodium. It is used for anhydrous sodium sulphite, sodium metabisulphite, food-grade sodium sulphite, photographic sodium sulphite and sodium bisulphite solution.
What HS 2832.10 covers
Sodium sulphite is a crucial inorganic chemical widely traded for its reducing and antioxidant properties. It's heavily utilized in industries like pulp and paper for bleaching, water treatment as an oxygen scavenger, and in the food industry as a preservative (E221). Textile manufacturers use it as a desulfurizing agent, and it finds application in photography as a developing agent. Key players in this trade include chemical manufacturers and distributors, as well as end-users in the aforementioned sectors. The global market sees significant movement from major chemical-producing nations to countries with large industrial bases. Understanding its various grades – anhydrous, heptahydrate, and food-grade – is essential for trade, as specifications can vary widely depending on the intended application. Its role in environmental compliance, particularly in wastewater treatment, is also a growing driver for its international demand.
- Covers
- Anhydrous sodium sulphite
- Sodium metabisulphite
- Food-grade sodium sulphite
- Photographic sodium sulphite
- Sodium bisulphite solution
- Sodium thiosulphate
- Sodium hydrosulphite
- Examples
- BASF Sodium Sulphite
- Solvay Sodium Sulphite
- Esseco Sodium Metabisulphite
- ADM Sodium Sulphite
- Merck Sodium Sulphite
Codes often confused with 2832.10
Common mistake. This code can be confused with 283220 (other sulphites) or 283110 (dithionites and sulphoxylates of sodium) due to similar chemical functions or names. It's crucial to distinguish based on the specific chemical compound and its sodium salt.
Top exporters and importers of HS code 283210, 2025
In 2025, the largest exporter of HS code 283210 in UN Comtrade data was China, with 40% of world exports; the largest importer in UN Comtrade data was the United States, with 7.6% of world imports. The DR Congo did not report 2025 data, and its estimate from partner records misses its trade with other countries that did not report: in 2024 that was 4.9% of its imports here ($3.2M, CEPII BACI), so it may also belong among the top importers.
Top exporters 2025 · share of world exports
- 1 China $120M 40% of world exports
- 2 Thailand $43M 15% of world exports
- 3 Italy $41M 14% of world exports
World total: $297M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 United States $29M 7.6% of world imports
- 2 Brazil $19M 4.8% of world imports
- 3 Ecuador $18M 4.6% of world imports
The DR Congo did not report 2025 data, and its estimate from partner records misses its trade with other countries that did not report: in 2024 that was 4.9% of its imports here ($3.2M, CEPII BACI), so it may also belong among the top importers.
World total: $388M 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 2832.10 2
Brazil splits HS 2832.10 into 2 NCM codes, Mercosur's 8-digit tariff lines.
All Brazil NCM codes in heading 28.32 →
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.
Questions about HS 2832.10
What is HS code 283210?
HS code 283210 is a 6-digit subheading in the Harmonized System that covers: Sulphites; of sodium. Sodium sulphite is a crucial inorganic chemical widely traded for its reducing and antioxidant properties. It's heavily utilized in industries like pulp and paper for bleaching, water treatment as an oxygen scavenger, and in the food industry as a preservative (E221). Textile manufacturers use it as a desulfurizing agent, and it finds application in photography as a developing agent. Key players in this trade include chemical manufacturers and distributors, as well as end-users in the aforementioned sectors. The global market sees significant movement from major chemical-producing nations to countries with large industrial bases. Understanding its various grades – anhydrous, heptahydrate, and food-grade – is essential for trade, as specifications can vary widely depending on the intended application. Its role in environmental compliance, particularly in wastewater treatment, is also a growing driver for its international demand.
What products fall under HS code 283210?
Anhydrous sodium sulphite, Sodium metabisulphite, Food-grade sodium sulphite, Photographic sodium sulphite, Sodium bisulphite solution, Sodium thiosulphate, Sodium hydrosulphite
What are common misclassifications for HS code 283210?
This code can be confused with 283220 (other sulphites) or 283110 (dithionites and sulphoxylates of sodium) due to similar chemical functions or names. It's crucial to distinguish based on the specific chemical compound and its sodium salt.
Which countries are the top exporters of goods under HS code 283210?
In 2025, the top exporters of HS code 283210 in UN Comtrade data were China ($120M, 40% of world exports), Thailand ($43M) and Italy ($41M). World exports came to about $297M, 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 283210?
In 2025, the top importers of HS code 283210 in UN Comtrade data were the United States ($29M, 7.6% of world imports), Brazil ($19M) and Ecuador ($18M). World imports came to about $388M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). The DR Congo did not report 2025 data, and its estimate from partner records misses its trade with other countries that did not report: in 2024 that was 4.9% of its imports here ($3.2M, CEPII BACI), so it may also belong among the top importers.
How is HS code 283210 structured?
HS code 283210 is a 6-digit subheading under the Harmonized System. The first 2 digits (28) identify the chapter, digits 3-4 (32) 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 283210?
Brazil splits HS code 283210 into 2 NCM codes: 2832.10.10 (Disodium sulphite), 2832.10.90 (Other sodium sulphites). The first 6 digits of each match the HS code.