HS Code 2831Dithionites and sulphoxylates
2 six-digit codes · Heading 31 of 50 in Chapter 28 · World Customs Organization Harmonized System
HS code 2831 is the customs heading for dithionites and sulphoxylates, spelled sulfoxylates in US English. Pick the right six-digit subheading below, then look up the shipments.
Heading 2831 splits exactly two ways. Goods answering to “Dithionites and sulphoxylates” classify either at 283110 or at 283190, and the wording in the table below is the whole of what separates them. The heading is number 31 of 50 in Chapter 28, Inorganic chemicals; organic and inorganic compounds of precious metals; of rare earth metals, of radio-active elements and of isotopes, which runs to 180 six-digit codes in all.
What HS code 2831 covers
These goods are sulphur-based chemical compounds. Some price lists and tariffs spell the second word sulfoxylates. Indian traders call this heading the HSN code 2831. US tariff lists call it the HTS code 2831.
Customs classification works like a tree. The heading is the four-digit step. The six-digit subheading is the next step down. Your goods must match one subheading, and the product name on your invoice should fit its wording.
The heading sits in Chapter 28, which holds inorganic chemicals. A sulphur compound that is not a dithionite or sulphoxylate probably belongs in a neighbouring heading, covered below.
283110 vs 283190: choosing the right code
The difference between the two subheadings comes down to one question: is the compound made with sodium?
If yes, use 283110. Sodium dithionite goes here. If the compound is made with any other element, use 283190, which is worded as other than sodium.
Check your product sheet for the exact chemical name first. A name that starts with sodium points to 283110. A name that starts with another element points to 283190. If you are still unsure, run the product name through the HS code classifier before you file or search.
- 283110: the sodium compounds
- 283190: every other compound in the heading
Related headings: sulphides, sulphites and sulphates
Several nearby headings have similar names. Check the exact chemical family before you choose.
Sulphides and polysulphides sit in 2830. Sulphites and thiosulphates sit in 2832. Plain sulphur has its own heading, 2802.
Sodium appears in many Chapter 28 headings, so a sodium compound is not automatically 283110. Caustic soda, for example, is in 2815. Only the sodium dithionites and sulphoxylates belong here.
HS 2831 import data, export data and suppliers
Many people ask who imports these chemicals, or who exports them, for example from India. Both questions start with the code. Use 283110 or 283190 if you know the exact compound. Use 2831 to look at the whole heading.
Import records show the buyers behind each shipment. Export records show the suppliers. You can open the import data and export data pages, or go straight to buyer data and supplier data.
Data coverage and refresh
EximDataX shows shipment-level import and export records from official customs sources. Coverage: 43 direct customs feeds plus 184 mirror-derived countries. Named buyers and named suppliers are available in 38 of the 43 direct markets. Most markets refresh weekly and some refresh daily.
You can search by HS code to see who imports and exports a product, and book a free demo.
Nearby headings in Chapter 28
- 2825Hydrazine and hydroxylamine and their inorganic salts; other inorganic bases…9 codes
- 2826Fluorides; fluorosilicates, fluoroaluminates and other complex fluorine salts4 codes
- 2827Chlorides; chloride oxides and chloride hydroxides; bromides and bromide…11 codes
- 2828Hypochlorites; commercial calcium hypochlorite; chlorites; hypobromites2 codes
- 2829Chlorates and perchlorates; bromates and perbromates; iodates and periodates3 codes
- 2830Sulphides; polysulphides whether or not chemically defined2 codes
- 2832Sulphites; thiosulphates3 codes
- 2833Sulphates; alums; peroxosulphates (persulphates)10 codes
- 2834Nitrites; nitrates3 codes
- 2835Phosphinates (hypophosphites), phosphonates (phosphites), and phosphates; and…8 codes
- 2836Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate…8 codes
- 2837Cyanides, cyanide oxides and complex cyanides3 codes
Who ships under 2831?
EximDataX tracks the live import–export records filed under this heading and the 2 codes beneath it: named buyers, suppliers, quantities and values from official customs feeds.
Section VI: Products of the Chemical or Allied Industries, chapters 28–38.
HS Code 2831: common questions
What is the HS code for sodium dithionite?
Sodium dithionite fits 283110. That subheading is worded as dithionites and sulphoxylates of sodium.
What is the difference between 283110 and 283190?
283110 is for compounds of sodium. 283190 is for compounds of any other element.
Is the HSN code 2831 the same heading?
Yes. HSN is the name used in India, and HS is the name used in world trade. The number is the same.
Who imports dithionites and sulphoxylates?
Importers file their goods under 283110 or 283190. To see the names behind those filings, open the import data page and search by the code.
Where can I find export data and suppliers for this heading?
Use the export data and supplier data pages and search by code. If you are not sure which code fits, check the HS code classifier first.
See what your buyers are buying.Then decide.
Everything we show you comes from official customs filings — records, not claims. 30 minutes. Your shipment. Your HS code. Real platform. If you don’t see something new about your market by the end of the call, we walk away. No follow-ups.