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HS-4 · Heading

2833Sulphates; alums; peroxosulphates (persulphates)

Chapter 28: Inorganic chemicals

Plain-language overview

Use HS-4 2833 when importing sulphates, such as sodium sulphate for detergent manufacturing, or alums used in water purification. Knowing the correct subheading is crucial for compliance and duty rates.

When deciding between HS-6 283311 (sodium sulphates; disodium sulphate) and HS-6 283319 (sodium sulphates; other than disodium sulphate), consider the specific type of sodium sulphate in your shipment. Disodium sulphate is a specific compound, while the other category includes various forms.

For magnesium sulphates, use HS-6 283321. If your product is an aluminium sulphate, classify it under HS-6 283322. Each sulphate has distinct applications, so ensure you match the correct chemical composition to the right code.

Keywords & topics

Short phrases that describe this HS-4 heading when you're searching or filtering schedules.

HS-4 2833 sulphates · sodium sulphate classification · magnesium sulphate import code · aluminium sulphate HS-6 · peroxosulphates customs · chemical import codes · sulphate duty rates · alum classification · sodium sulphate types · sulphates for agriculture

Examples

Drawn from the official tariff wording for this HS-4 heading. Always confirm against your published schedule and legal notes.

  • Sodium sulphate for laundry detergents (HS-6 283311)
  • Magnesium sulphate used in fertilizers (HS-6 283321)
  • Aluminium sulphate for water treatment (HS-6 283322)
  • Copper sulphate for agricultural fungicides (HS-6 283325)
  • Peroxosulphates for hair bleaching products (HS-6 283340)

Common questions

How people often phrase their search when they're trying to classify goods like yours.

  • What is the HS code for sodium sulphate?
  • How to classify magnesium sulphate for import?
  • What are the different types of sulphates under HS-4 2833?
  • Is disodium sulphate different from other sodium sulphates?
  • What is the import duty on aluminium sulphate?
  • How do I determine the correct HS-6 for my sulphate shipment?

Related topics

Longer phrases that come up when you're comparing codes or talking to a broker.

  • classification of sodium sulphates for import
  • difference between disodium and other sodium sulphates
  • how to classify magnesium sulphate under HS codes
  • importing peroxosulphates for cosmetic use
  • aluminium sulphate customs requirements
  • sulphate import codes for agricultural use
  • understanding HS-4 2833 for chemical imports
  • import duty rates for sulphates and alums

Questions & answers

For orientation only—the binding text is your national tariff and the WCO nomenclature your country uses.

What is the difference between HS-6 283311 and HS-6 283319?
HS-6 283311 refers specifically to disodium sulphate, while HS-6 283319 covers all other forms of sodium sulphate.
Which HS code should I use for magnesium sulphate?
Use HS-6 283321 for magnesium sulphate.
What are the applications of peroxosulphates?
Peroxosulphates, classified under HS-6 283340, are commonly used in hair bleaching and as oxidizing agents in various chemical processes.
How do I find the correct HS code for my chemical product?
Identify the specific chemical composition and application of your product, then refer to the relevant HS-6 subheading under HS-4 2833.
What is the import duty for aluminium sulphate?
The import duty for aluminium sulphate can vary by country; check your local customs regulations for specific rates.

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HS-6 subheadings (10)

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