Product classification
HS code for Sodium bisulphate: 2833.19
Sodium sulphates, other than disodium sulphate.
Classification of sodium bisulphate under HS 2833.19
Sodium bisulphate, chemically known as sodium hydrogen sulphate (NaHSO4), is classified under HS code 2833.19. This classification is situated within Chapter 28, which encompasses inorganic chemicals and their compounds. Heading 2833 is designated for sulphates, alums, and peroxosulphates. Within this heading, the system distinguishes between different types of sodium sulphates. Subheading 2833.11 is specifically for disodium sulphate (the neutral salt), while 2833.19 serves as the 'other' category for sodium sulphates, which includes the acid salt, sodium bisulphate. The classification is determined by the chemical structure of the compound; sodium bisulphate is formed by the partial neutralization of sulphuric acid by a sodium base, leaving one replaceable hydrogen atom. As a separate chemically defined compound, it must adhere to the requirements of Chapter 28, Note 1. It is widely used in water treatment, metal finishing, and as a pH adjuster in various industries. Accurate classification under 2833.19 is vital for regulatory compliance, particularly because this chemical is often used in sensitive environmental and industrial processes where chemical purity and identity are strictly monitored.
- Covers
- Sodium hydrogen sulphate (Sodium bisulphate)
- Anhydrous sodium bisulphate
- Sodium bisulphate monohydrate
- Nitre cake (industrial grade sodium bisulphate)
- Dry acid (sodium bisulphate used for pH control)
- Sodium acid sulphate
- Also under 2833.19
- Jones-Hamilton Sodium Bisulphate
- DuPont Sodium Bisulphate
- Sigma-Aldrich Sodium Bisulphate
- HTH Pool Care pH Reducer
Codes often confused with 2833.19
Common mistake. Sodium bisulphate (2833.19) is most commonly confused with disodium sulphate, which is classified under HS code 2833.11. The distinction is chemical: 2833.11 is for the neutral salt (Na2SO4), while 2833.19 is for the acid salt (NaHSO4). Another potential area of confusion involves sodium sulphites, which fall under heading 2832. Specifically, sodium metabisulphite (2832.10) is often confused with sodium bisulphate due to the similarity in names, despite being entirely different chemical species with different oxidation states of sulphur.
Top exporters and importers of HS 283319 (the code used for sodium bisulphate), 2025
In 2025, the largest exporter of HS 283319 (the code used for sodium bisulphate) 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.
Figures cover everything classified under HS 283319, not only sodium bisulphate.
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 sodium bisulphate
Brazil classifies sodium bisulphate under NCM 2833.19.00: HS 2833.19 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about sodium bisulphate
What is the HS code for Sodium bisulphate?
The HS code for Sodium bisulphate is 283319 (Sodium sulphates; other than disodium sulphate). The HS code for sodium bisulphate (sodium hydrogen sulphate) is 2833.19.
How do I classify Sodium bisulphate for customs?
Sodium bisulphate is classified under HS code 283319 — Sodium sulphates; other than disodium sulphate. This is a 6-digit subheading level code.
Is sodium bisulphate the same as sodium metabisulphite for customs?
No, they are different chemicals. Sodium bisulphate is a sulphate classified under 2833.19, while sodium metabisulphite is a sulphite classified under 2832.10.
Which countries are the top exporters of sodium bisulphate (HS 283319)?
In 2025, the top exporters of HS 283319 (the code used for sodium bisulphate) 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 sodium bisulphate (HS 283319)?
In 2025, the top importers of HS 283319 (the code used for sodium bisulphate) 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.
Is the HS code for Sodium bisulphate the same in all countries?
The base HS code 283319 for Sodium bisulphate is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.
What is the NCM code for sodium bisulphate in Brazil?
In Brazil, sodium bisulphate (HS 283319) is classified under NCM 2833.19.00.