Sulphates; alums; peroxosulphates (persulphates)
HS heading 28.33 covers Sulphates; alums; peroxosulphates (persulphates). Within Chapter 28 it splits into 10 six-digit subheadings spanning sodium sulphates to peroxosulphates (persulphates), each carrying its own customs duty line.
- India exports 2024
- $143.6M
- Share of Chapter 28
- 4%
- Rank in its chapter
- #6 of 50
Source: UN Comtrade — India's reported merchandise exports to the world, 2024.
Sourcing this category from India
HS 28.33 covers Sulphates; alums; peroxosulphates (persulphates). At the six-digit line it separates sodium sulphates, sulphates and alums, among others — each a distinct duty line shown below. India's large chemical industry exports inorganic acids, salts, oxides and industrial gases worldwide. India exported $143.6M under this code worldwide in 2024, about 4% of all Chapter 28 exports, ranking #6 of 50 lines in its chapter (UN Comtrade).
How to read this code
28.33 is the four-digit HS heading for sulphates. To clear customs your destination country extends it to a full 8–10 digit code and assigns the duty rate. India's preferential trade agreements (UAE CEPA, Australia ECTA, and others) can reduce or zero out that duty on many chemicals & allied industries lines — check our import guides for your market.
Subheadings under HS 28.33
The Harmonised System breaks Sulphates; alums; peroxosulphates (persulphates) into these 10 subheadings. Drill down to the exact classification for your goods.
Sodium sulphates; disodium sulphate
Sodium sulphates; other than disodium sulphate
Sulphates; of magnesium
Sulphates; of aluminium
Sulphates; of nickel
Sulphates; of copper
Sulphates; of barium
Sulphates; n.e.c. in item no. 2833.2
Alums
Peroxosulphates (persulphates)
Top destinations for Chapter 28 exports
India's largest buyers of goods in this HS chapter in 2024, ranked by export value.
Chapter-level destination mix — your specific HS line may skew differently. Source: UN Comtrade, 2024.
More codes in Inorganic chemicals; organic and inorganic compounds of precious metals; of rare earth metals, of radio-active elements and of isotopes
Jump to the other headings classified under 28 — hover a code for its description.
Working out import duty for HS 28.33 into your market? See full duty context and India-vs-rivals comparisons in our India comparison guides and export resource hub.
Indian exporters in this category
Established export houses with relevant HS focus. Listings are compiled from public records — run your own due diligence.
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