Subheading · Chapter 28 · Section VI, Products of the chemical or allied industries
HS 2831 10Dithionites and sulphoxylates: of sodium
Inorganic chemicals, organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes
- Customs duty
- 7.5%
- 2 tariff items
- GST now
- 5% or 18%
- depending on the goods
- Import policy
- Free
- Export policy
- Free
- Unit
- kg
- Duty in China
- 5%
- On Indian goods
Codes under this subheading
2 codes. Duty and GST are set on the 8-digit tariff items; open the one that describes your goods.
| Code | Description | Customs duty | GST now | Unit |
|---|---|---|---|---|
| 2831 10 10 | Sodium dithionites (sodium hydrosulphite) | 7.5% | 5% or 18% | kg |
| 2831 10 20 | Sodium sulphoxylates (including sodium formaldehyde sulphoxylate) | 7.5% | 5% or 18% | kg |
Importing into India
Duty is set on each 8-digit tariff item: open one of the codes above. Basic customs duty across its 2 tariff items: 7.5%. The rules below cover this whole code.
Anti-dumping, countervailing and safeguard duty in force
- Anti-dumping duty on goods from China and South Korea: USD 300–440 per tonne, by origin and producer (until 16 Dec 2026). Sodium Hydrosulphite. 71/2021-ADD
Charged on top of the duty above, only on goods from the countries named.
Import policy (DGFT ITC(HS)) of its tariff items
- Free: 2 tariff items
GST
IGST on imports is the GST rate. Rates changed on 22 September 2025.
- Now 5% or 18%, depending on the goods.
- Until 21 September 2025 5%, 12% or 18%, depending on the goods.
- Change: Changed.
The rules that set it now
| Notification | Goods | Rate |
|---|---|---|
| 9/2025-Integrated Tax (Rate)Schedule I, S.No. 210 | Thorium oxalate, Enriched KBF4 (enriched potassium fluroborate), Enriched elemental boron, Nuclear fuel | 5% |
| 9/2025-Integrated Tax (Rate)Schedule I, S.No. 211 | Anaesthetics, Potassium Iodate, Iodine, Steam | 5% |
| 9/2025-Integrated Tax (Rate)Schedule I, S.No. 221 | Micronutrients, which are covered under serial number 1(g) of Schedule 1, Part (A) of the Fertilizer Control Order, 1985 and are manufactured by the manufacturers which are registered under the Fertilizer Control Order, 1985 | 5% |
| 9/2025-Integrated Tax (Rate)Schedule II, S.No. 35 | All inorganic chemicals [other than those specified in notification No.10/2025- Central Tax (Rate) dated 17th September 2025 or other Schedules of this notification] | 18% |
History
| Period | Rate | Notification |
|---|---|---|
| Until 21 Sep 2025 | 5%, 12% or 18% | 1/2017-Central Tax (Rate) |
| From 22 Sep 2025 | 5% or 18% | 9/2025-Integrated Tax (Rate) |
Exporting from India
Export duty
Nil. The Second Schedule to the Customs Tariff Act does not list these goods, so no export duty is charged.
Duty drawback (All Industry Rates)
| Drawback item | Goods | Rate | Cap |
|---|---|---|---|
| 2831 | Dithionites and sulphoxylates | — | — |
| 283101 | Sodium dithionites (sodium hydrosulphite) | 1.4% | — |
| 283199 | Others | 1% | — |
Drawback items follow the 4-digit heading, not the 8-digit code: claim the one that describes your goods. Rates of notification 77/2023-Customs (N.T.) as amended, in force on 19 Oct 2026.
Export policy (DGFT ITC(HS) Schedule 2) of its tariff items
- Free: 2 tariff items
What buyers pay abroad: import duty in the US, UK, EU and Australia for 2831 10, and China's below.
China: the same goods (2831 10)
China shares the first 6 digits with India and splits them into 10-digit codes of its own: 2 in force under 2831 10. Exporters see what China charges Indian goods; importers see the rebate and licences their Chinese supplier deals with.
| China code | Goods | Duty on Indian goods | MFN | Import VAT | Export rebate | Licences |
|---|---|---|---|---|---|---|
| 2831.10.10.00 | Dithionites of sodium钠的连二亚硫酸盐 | 5%MFN rate (no APTA concession on this line) | 5% | 13% | 0% | ABNMRS |
| 2831.10.20.00 | Sodium dithionites钠的次硫酸盐 | 5%MFN rate (no APTA concession on this line) | 5% | 13% | 0% | None |
- India is a member of the Asia-Pacific Trade Agreement (APTA). With an APTA certificate of origin, Indian goods pay China's APTA rate where the line has one; China applies the lower of that and its provisional rate.
- The export VAT rebate is what China refunds its own exporters. When China cuts it, Chinese export prices tend to rise.
Every Chinese code in full
2831.10.10Dithionites of sodium
2831.10.10.00Dithionites of sodium钠的连二亚硫酸盐
- Unit
- kg
- MFN import duty
- 5%
- Provisional import duty
- None
- General import duty
- 30%
- Import VAT
- 13%
- Consumption tax
- 0%
- Export duty
- 0%
- Provisional export duty
- None
- Export VAT rebate
- 0%
- Updated by China
- 7 Sep 2026
Licences and certificates
- AInbound goods clearance (inspection and quarantine)入境货物通关单
- BOutbound goods clearance (inspection and quarantine)出境货物通关单
Inspection and quarantine
- NExport commodity inspection出口商品检验
- MImport commodity inspection进口商品检验
- RImported food hygiene inspection进口食品卫生监督检验
- SExported food hygiene inspection出口食品卫生监督检验
What the customs declaration must state
- 0.Brand type品牌类型
- 1.Export preferential status出口享惠情况
- 2.Ingredient content成分含量
- 3.GTIN
- 4.CAS
- 5.Other其他
China's agreement rates
- ASEAN
- 0%
- Chile
- 0%
- Pakistan
- 0%
- New Zealand
- 0%
- Peru
- 0%
- Costa Rica
- 0%
- Switzerland
- 0%
- Iceland
- 0%
- Australia
- 0%
- South Korea
- 0%
- Georgia
- 0%
- Mauritius
- 0%
- Maldives
- 0%
- Cambodia
- 0%
- Nicaragua
- 0%
- Ecuador
- 0%
- Serbia
- 0%
- Hong Kong
- 0%
- Macao
- 0%
RCEP rates
- Australia
- 0%
- Brunei
- 0%
- Cambodia
- 0%
- South Korea
- 0%
- Laos
- 0%
- Malaysia
- 0%
- New Zealand
- 0%
- Singapore
- 0%
- Thailand
- 0%
- Vietnam
- 0%
- Japan
- 0%
- Indonesia
- 0%
- Philippines
- 0%
- Myanmar
- 0%
CIQ codes
- 2831101000101Dithionites (hydrosulphites) of sodium钠的连二亚硫酸盐(连二亚硫酸钠)
- 2831101000102Sodium dithionite钠的连二亚硫酸盐(连二亚硫酸钠(保险粉))
- 2831101000103Dithionites of sodium (sodium hydrosulphite)钠的连二亚硫酸盐(低亚硫酸钠)
- 2831101000301Sodium dithionite (dangerous chemical, not for use as food additive)钠的连二亚硫酸盐(危险化学品,不用作食品添加剂)
- 2831101000302Sodium dithionite (dangerous chemical, used as food additive)钠的连二亚硫酸盐(危险化学品,用作食品添加剂)
- 2831101000303Sodium dithionite (general chemical, declared for industrial use only, not for food additives, no quarantine required)钠的连二亚硫酸盐(一般化学品，需申报仅用于工业用途不用于食品添加剂无检疫要求)
- 2831101000304Sodium dithionite (food additive classified as dangerous chemical)钠的连二亚硫酸盐(属于危险化学品的食品添加剂)
2831.10.20Sodium dithionites
2831.10.20.00Sodium dithionites钠的次硫酸盐
- Unit
- kg
- MFN import duty
- 5%
- Provisional import duty
- None
- General import duty
- 30%
- Import VAT
- 13%
- Consumption tax
- 0%
- Export duty
- 0%
- Provisional export duty
- None
- Export VAT rebate
- 0%
- Updated by China
- 7 Sep 2026
Licences and certificates
None.
Inspection and quarantine
None.
What the customs declaration must state
- 0.Brand type品牌类型
- 1.Export preferential status出口享惠情况
- 2.Ingredient content成分含量
- 3.GTIN
- 4.CAS
- 5.Other其他
China's agreement rates
- ASEAN
- 0%
- Chile
- 0%
- Pakistan
- 0%
- New Zealand
- 0%
- Peru
- 0%
- Costa Rica
- 0%
- Switzerland
- 0%
- Iceland
- 0%
- Australia
- 0%
- South Korea
- 0%
- Georgia
- 0%
- Mauritius
- 0%
- Maldives
- 0%
- Cambodia
- 0%
- Nicaragua
- 0%
- Ecuador
- 0%
- Serbia
- 0%
- Hong Kong
- 0%
- Macao
- 0%
RCEP rates
- Australia
- 0%
- Brunei
- 0%
- Cambodia
- 0%
- South Korea
- 0%
- Laos
- 0%
- Malaysia
- 0%
- New Zealand
- 0%
- Singapore
- 0%
- Thailand
- 0%
- Vietnam
- 0%
- Japan
- 0%
- Indonesia
- 0%
- Philippines
- 0%
- Myanmar
- 0%
CIQ codes
- 2831102000999Sodium dithionites钠的次硫酸盐
China's tariff as compiled by HS编码网 from China Customs, the State Council Tariff Commission and the State Taxation Administration. The Chinese is the original.
Nearby codes
Sources
- GSTN HSN code masterChecked 13 Oct 2026
- DGFT ITC(HS) import and export policyChecked 9 Oct 2026
- GST rate per HSN (archived GSTZen extract)Checked 29 Sep 2026
- Customs Tariff of India (First Schedule): sections, chapters, notes and statutory BCDChecked 19 Oct 2026
- GST rates on goods, before and after 22 September 2025Checked 18 Oct 2026
- BIS compulsory certification: products and Quality Control OrdersChecked 18 Oct 2026
- Anti-dumping, countervailing and safeguard duties in force (India)Checked 19 Oct 2026
- India's export duty (Second Schedule to the Customs Tariff Act and notifications 27/2011, 55/2022, 22/2024)Checked 18 Oct 2026
- India's All Industry Rates of duty drawback (notification 77/2023-Customs (N.T.))Checked 19 Oct 2026
- China customs tariff (HS编码网)Checked 19 Oct 2026
For information, not a customs ruling. Only notifications published in the Gazette have legal force; confirm the duty with your customs broker or ICEGATE before you price a deal.