HS-4 · Heading
2831 — Dithionites and sulphoxylates
Chapter 28: Inorganic chemicals
Plain-language overview
Use HS-4 2831 when importing or exporting dithionites and sulphoxylates, such as sodium dithionite used in textile bleaching. This heading includes products that contain sulfur in their chemical structure, primarily used in various industrial applications.
To differentiate between the subheadings, consider the specific type of dithionite or sulphoxylate. HS-6 283110 covers sodium dithionites, while HS-6 283190 includes all other types, such as those containing potassium or ammonium. Ensure you know the exact chemical composition to select the correct code.
When assessing imports, note that sodium dithionites are often packaged in bulk for industrial use, while other forms may come in smaller containers for specialized applications. The packaging and intended use can help clarify which subheading applies.
Keywords & topics
Short phrases that describe this HS-4 heading when you're searching or filtering schedules.
dithionites · sulphoxylates · sodium dithionite · chemical import codes · industrial chemicals · chemical composition · textile bleaching agents · sulfur compounds · potassium dithionite · ammonium sulphoxylate
Examples
Drawn from the official tariff wording for this HS-4 heading. Always confirm against your published schedule and legal notes.
- Sodium dithionite in 25 kg bags for textile applications
- Potassium dithionite in 1 kg containers for laboratory use
- Ammonium sulphoxylate in 50 kg drums for chemical manufacturing
- Sodium dithionite solution in bulk for wastewater treatment
Common questions
How people often phrase their search when they're trying to classify goods like yours.
- What is the difference between sodium dithionite and other dithionites?
- How do I classify dithionites for import?
- What are the uses of sulphoxylates in industry?
- Can I import sodium dithionite in bulk?
- What are the packaging requirements for dithionites?
- How do I find the correct HS code for sulphoxylates?
Related topics
Longer phrases that come up when you're comparing codes or talking to a broker.
- importing sodium dithionite for textile industry
- classifying dithionites for customs clearance
- uses of sulphoxylates in chemical manufacturing
- packaging options for sodium dithionite
- how to choose between dithionite subheadings
- chemical composition of dithionites and sulphoxylates
- bulk import of industrial chemicals like dithionites
- sodium vs potassium dithionite classification
Questions & answers
For orientation only—the binding text is your national tariff and the WCO nomenclature your country uses.
- What types of dithionites are included in HS-4 2831?
- HS-4 2831 includes sodium dithionites under **HS-6 283110** and other dithionites or sulphoxylates under **HS-6 283190**.
- How do I determine the correct HS-6 code for my product?
- Identify the specific type of dithionite or sulphoxylate you are importing, including its chemical composition and intended use.
- Are there specific regulations for importing sodium dithionite?
- Yes, sodium dithionite may be subject to specific regulations depending on its use, especially in textiles and wastewater treatment.
- What packaging options are available for dithionites?
- Dithionites can be packaged in bulk bags, smaller containers, or drums, depending on their intended industrial application.
- Can I import sulphoxylates for laboratory use?
- Yes, sulphoxylates can be imported for laboratory use, but ensure you classify them correctly under the appropriate HS-6 code.
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Heading-browse mode uses HS-6 283100 (first line of this block).