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HS Code Lookup for Heading 2832

HS Code Lookup helps classify products under appropriate HS code and find duties applicable across 140+ countries. Find and discover HS classification, tariffs, taxes, controls, rulings, ECCNs, and default and preferential duties for HS code 2832.

Heading 2832

Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes - Sulphites; thiosulphates.

List of Sub Headings & Description

283210 Sodium sulphites

283220 Other sulphites

283230 Thiosulphates

WCO Notes for Heading 2832

28.32 ‑ Sulphites; thiosulphates.

2832.10 ‑ Sodium sulphites

2832.20 ‑ Other sulphites

2832.30 ‑ Thiosulphates

Subject to the exclusions mentioned in the introduction to this sub‑Chapter, this heading covers :

(A) Metal sulphites ‑ salts of sulphurous acid (H₂SO₃) (which exists only in aqueous solution and corresponds to the sulphur dioxide of heading 28.11).

(B) Metal thiosulphates ‑ salts of thiosulphuric acid (H₂S₂O₃) which does not exist in the pure state.

The heading excludes concentrated sulphite lye (heading 38.04), and the industrial products known as “hydrosulphites” stabilised by organic substances (heading 28.31).

(A) SULPHITES

This heading covers both neutral and acid sulphites.

(1) Sodium sulphites. These include sodium hydrogen sulphite (NaHSO₃), disodium disulphite (Na₂SO₃.SO₂ or Na₂S₂O₅) or and sodium sulphite (Na₂SO₃).

(a) Sodium hydrogen sulphite (“sodium bisulphite”, sodium acid sulphite) results from the action of sulphur dioxide on an aqueous solution of sodium carbonate. Colourless powder or crystals, rather unstable, with a smell of sulphur dioxide and very soluble in water; also presented in concentrated solution, yellowish in colour. Used as a reducing agent in organic synthesis, in the manufacture of indigo, for bleaching wool or silk, as a vulcanising agent for the treatment of latex, in tanning, in oenology (as an antiseptic to preserve wine) and to reduce the buoyancy of minerals in flotation processes.

(b) Disodium disulphite (sodium metabisulphite, pyrosulphite, dry sulphite and, in some languages, incorrectly referred to as “sodium bisulphite crystals”). Obtained from the hydrogen sulphite; oxidises rather rapidly, especially in a humid atmosphere. Used for the same purposes as the acid sulphite and in viticulture and photography.

(c) Sodium sulphite (neutral sodium sulphite), prepared by neutralising a solution of the hydrogen sulphite by means of sodium carbonate. Anhydrous (in powder) or crystallised (with 7 H₂O) colourless, soluble in water. Used in photography, in breweries, for treating rosin, as an antiseptic or bleaching agent, in the manufacture of other sulphites or thiosulphates and of organic dyes, etc.

(2) Ammonium sulphite ((NH₄)₂SO₃.H₂O). Results from the action of sulphur dioxide on ammonia. Colourless crystals, soluble in water, oxidising in the air. Used in organic synthesis.

(3) Potassium sulphites. Appear in the same forms as sodium sulphites.

(a) Potassium hydrogen sulphite, crystalline, used in dyeing and in oenology.

(b) Dipotassium disulphite (potassium metabisulphite), a white powder or in scales, used in photography, for the carroting of hair in the felt hat industry or as an antiseptic.

(4) Calcium sulphites, which include :

(a) Calcium dihydrogen bis(sulphite) (calcium bisulphite) (Ca(HSO₃) ₂), obtained by the action of sulphur dioxide on calcium hydroxide. Used to dissolve lignin in the preparation of chemical pulp, for bleaching (e.g., sponges), as an antichlor and to prevent cloudiness in beer.

(b) Neutral calcium sulphite (CaSO₃), a white crystalline powder or hydrated needles (with 2 H₂O), sparingly soluble in water, efflorescing in the air. Used in medicine or in oenology.

(5) Other sulphites. These include magnesium sulphites (same uses as calcium sulphites), zinc sulphite (antiseptic and mordant), or chromium hydrogen sulphite (mordant).

(B) THIOSULPHATES

(1) Ammonium thiosulphate ((NH₄)₂S₂O₃). Prepared from sodium thiosulphate. Colourless crystals, deliquescent and soluble in water. Used for photographic fixing baths and as an antiseptic.

(2) Sodium thiosulphate (Na₂S₂O₃.5H₂O). Results from the action of sulphur on a solution of sodium sulphite. In the form of colourless crystals, very soluble in water, unaffected by air. Used as a fixing agent in photography, as an antichlor in the bleaching of textiles or paper, in chrome tanning and in organic synthesis.

(3) Calcium thiosulphate (CaS₂O₃.H₂O). Prepared by oxidation of calcium sulphide. White crystalline powder, soluble in water. Used in medicine and in the preparation of other thiosulphates.

(4) Other thiosulphates. These include : barium thiosulphate (pigment with a pearly sheen); aluminium thiosulphate (used in organic synthesis); lead thiosulphate (used in the preparation of phosphorus‑free matches).

FAQs

What is HS code 2832?

HS code 2832 includes Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes - Sulphites; thiosulphates..

How many sub-headings are there in HS code 2832?

There are 3 sub-heading(s) in HS code 2832.

What is an HS Code and Why Does it Hold For Cross-Border Trade?

HS code is a standardized six-digit numerical classification system developed by the World Customs Organization (WCO) and acts as a universal language for simplifying the process of identifying and classifying traded products. They ensure consistent customs clearance, enable accurate duty calculation, and help identify relevant trade regulations. This simplifies the process for businesses, saving time, reducing risk, and promoting informed decision-making.

What are Controls and Why should Businesses Focus on Them?

In global trade, controls refer to a set of regulations and policies implemented by governments to manage the import and export of goods and services. These controls can take various forms, including tariffs, quotas, embargoes, export controls, and licensing requirements. Companies should prioritize understanding and adhering to them for compliance, reduced risk of legal issues, mitigating reputational damage, staying competitive, and building trust with governments.

What are Tariffs in Global Trade and Why should Businesses Focus on Them?

In global trade, tariffs are a type of tax levied by a government on imported goods. They act as a financial barrier to entry, increasing the overall cost of the imported product for domestic consumers and businesses. By understanding how tariffs work and their potential impact, companies can make informed decisions about pricing, sourcing, and market expansion, ultimately ensuring their competitiveness in the global marketplace.

What are FTAs in Global Trade and Why should Businesses Focus on Them?

In global trade, Free Trade Agreements (FTAs) are legally binding agreements between two or more countries aimed at reducing or eliminating barriers to trade between them. By understanding the terms of relevant FTAs and strategically incorporating them into their business plans, companies can enjoy reduced costs, expanded market access, and a more competitive edge in international trade.