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HS 2831.90 Subheading · Chemicals & Allied Industries

Dithionites and sulphoxylates; other than sodium

HS subheading 2831.90 identifies Dithionites and sulphoxylates; other than sodium — a six-digit classification under Chapter 28 used to set duty and paperwork.

India exports 2024
$4M
Share of Chapter 28
0.1%
Rank in its heading
#2 of 2

Source: UN Comtrade — India's reported merchandise exports to the world, 2024.

Sourcing this category from India

HS 2831.90 covers Dithionites and sulphoxylates; other than sodium. It is a leaf classification, so it sets the duty line directly for goods that fall under it. India's large chemical industry exports inorganic acids, salts, oxides and industrial gases worldwide. India exported $4M under this code worldwide in 2024, about 0.1% of all Chapter 28 exports, ranking #2 of 2 lines in its heading (UN Comtrade).

How to read this code

2831.90 is the six-digit HS subheading for dithionites and sulphoxylates. 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.

Top destinations for Chapter 28 exports

India's largest buyers of goods in this HS chapter in 2024, ranked by export value.

#1 USA $330.3M
#2 Oman $297.7M
#3 United Arab Emirates $241.2M
#4 Russian Federation $218.9M
#5 United Kingdom $217.3M

Chapter-level destination mix — your specific HS line may skew differently. Source: UN Comtrade, 2024.

More codes in Dithionites and sulphoxylates

Jump to the other codes classified under 28.31 — hover a code for its description.

Working out import duty for HS 2831.90 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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Last updated 28 Jun 2026 Figures are indicative sourcing benchmarks compiled from exporter quotes, India trade-scheme notifications and public customs tariffs. Confirm live pricing and HS classification before contracting.
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