HS code · 6-digit subheading
HS Code 2833.19 – Sodium sulphates; other than disodium sulphate
HS code 2833.19 is the 6-digit subheading for sodium sulphates, other than disodium sulphate. It is used for sodium bisulphate, sodium hydrogen sulphate, dry acid for pools, pH reducer and food-grade sodium bisulphate.
What HS 2833.19 covers
This category covers sodium sulphates that are not disodium sulphate, primarily referring to sodium bisulphate (sodium hydrogen sulphate). Sodium bisulphate is an acidic salt widely used as a pH reducer in various applications, including swimming pool chemicals, metal finishing, and as a cleaning agent. It also finds use in the food industry as a leavening agent and preservative. The international trade of these "other" sodium sulphates is driven by demand from specialty chemical manufacturers, pool chemical suppliers, and food processors. Unlike the high-volume disodium sulphate, trade in sodium bisulphate is often more specialized, catering to specific industrial needs where its acidic properties are advantageous. Key considerations in trade include purity levels, granular size, and packaging, as these can vary significantly based on the end application.
- Covers
- Sodium bisulphate
- Sodium hydrogen sulphate
- Dry acid for pools
- PH reducer
- Food-grade sodium bisulphate
- Industrial-grade sodium bisulphate
- Examples
- Jones-Hamilton Sodium Bisulphate
- DuPont Sodium Bisulphate
- Sigma-Aldrich Sodium Bisulphate
- HTH Pool Care pH Reducer
Codes often confused with 2833.19
Common mistake. This code is distinct from 283311 (disodium sulphate) by the presence of hydrogen in the chemical formula (NaHSO4 vs Na2SO4). It could also be confused with other acid salts or even some sulphites if not carefully identified by its specific chemical structure.
Top exporters and importers of HS code 283319, 2025
In 2025, the largest exporter of HS code 283319 in UN Comtrade data was the United States, with 43% of world exports; the largest importer in UN Comtrade data was South Africa, with 9.5% of world imports. Tunisia 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 100% of its exports here ($6.6M, CEPII BACI), so it may also belong among the top exporters.
Top exporters 2025 · share of world exports
- 1 United States $26M 43% of world exports
- 2 Türkiye $7.1M 12% of world exports
- 3 China $3.8M 6.4% of world exports
Tunisia 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 100% of its exports here ($6.6M, CEPII BACI), so it may also belong among the top exporters.
World total: $59M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 South Africa $14M 9.5% of world imports
- 2 Canada $11M 7.8% of world imports
- 3 France $11M 7.4% of world imports
World total: $143M 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 2833.19
Brazil does not split HS 2833.19: its NCM code is 2833.19.00.
All Brazil NCM codes in heading 28.33 →
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.
Questions about HS 2833.19
What is HS code 283319?
HS code 283319 is a 6-digit subheading in the Harmonized System that covers: Sodium sulphates; other than disodium sulphate. This category covers sodium sulphates that are not disodium sulphate, primarily referring to sodium bisulphate (sodium hydrogen sulphate). Sodium bisulphate is an acidic salt widely used as a pH reducer in various applications, including swimming pool chemicals, metal finishing, and as a cleaning agent. It also finds use in the food industry as a leavening agent and preservative. The international trade of these "other" sodium sulphates is driven by demand from specialty chemical manufacturers, pool chemical suppliers, and food processors. Unlike the high-volume disodium sulphate, trade in sodium bisulphate is often more specialized, catering to specific industrial needs where its acidic properties are advantageous. Key considerations in trade include purity levels, granular size, and packaging, as these can vary significantly based on the end application.
What products fall under HS code 283319?
Sodium bisulphate, Sodium hydrogen sulphate, Dry acid for pools, pH reducer, Food-grade sodium bisulphate, Industrial-grade sodium bisulphate
What are common misclassifications for HS code 283319?
This code is distinct from 283311 (disodium sulphate) by the presence of hydrogen in the chemical formula (NaHSO4 vs Na2SO4). It could also be confused with other acid salts or even some sulphites if not carefully identified by its specific chemical structure.
Which countries are the top exporters of goods under HS code 283319?
In 2025, the top exporters of HS code 283319 in UN Comtrade data were the United States ($26M, 43% of world exports), Türkiye ($7.1M) and China ($3.8M). World exports came to about $59M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Tunisia 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 100% of its exports here ($6.6M, CEPII BACI), so it may also belong among the top exporters.
Which countries are the top importers of goods under HS code 283319?
In 2025, the top importers of HS code 283319 in UN Comtrade data were South Africa ($14M, 9.5% of world imports), Canada ($11M) and France ($11M). World imports came to about $143M, 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 283319 structured?
HS code 283319 is a 6-digit subheading under the Harmonized System. The first 2 digits (28) identify the chapter, digits 3-4 (33) identify the heading, and digits 5-6 (19) specify the subheading. This code is standardized globally by the World Customs Organization.
What is the Brazil NCM code for HS code 283319?
In Brazil, HS code 283319 is NCM 2833.19.00. The last two digits are 00 because Brazil does not split this HS code further.