What is the HS code for sodium sulphite?
Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.
HS-4 · Heading
2832 — Sulphites; thiosulphates
Chapter 28: Inorganic chemicals
Plain-language overview
Use HS-4 2832 when importing sulphites and thiosulphates, such as sodium sulphite used in water treatment or food preservation. Knowing the exact subheading is crucial for compliance and accurate duty assessment.
When deciding between HS-6 283210 and HS-6 283220, consider the specific sodium content. If your shipment consists of sodium sulphite, use 283210. For other sulphites like calcium or magnesium sulphite, select 283220 to avoid misclassification.
For thiosulphates, specifically HS-6 283230, ensure your product is a thiosulphate compound like sodium thiosulphate, often used in photography and as a dechlorinating agent. This distinction is important for proper tariff application.
Keywords & topics
Useful terms traders and brokers use for this HS-4 heading.
sulphites import code · thiosulphates classification · HS-4 2832 · sodium sulphite · calcium sulphite · sodium thiosulphate · chemical import regulations · tariff codes for sulphites · inorganic chemicals · HS-6 subheadings
Examples
Drawn from the official tariff wording for this HS-4 heading. Always confirm against your published schedule and legal notes.
- Sodium sulphite for water treatment (HS-6 283210)
- Calcium sulphite for construction materials (HS-6 283220)
- Sodium thiosulphate for photographic processing (HS-6 283230)
- Potassium sulphite for food preservation (HS-6 283220)
- Sodium thiosulphate for chemical analysis (HS-6 283230)
Common questions
Frequent classification questions with short practical guidance.
How to classify thiosulphates for import?
Write down material, use, and product form first, then compare nearby lines before you lock the code.
Are there different types of sulphites?
Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.
What are the uses of sodium thiosulphate?
Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.
How do I determine the correct HS-6 line?
Match the product to the legal wording, then verify the final pick in your country tariff schedule before filing.
What is the duty rate for sulphites?
Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.
Related topics
Common real-world topics that come up during code comparison.
importing sodium sulphite under HS-4 2832
Check the exact product specs and destination-country tariff notes before finalizing the code.
classification of thiosulphates in trade
Use this topic to narrow your shortlist, then validate the final code against legal wording.
differences between sodium and calcium sulphite
Compare adjacent HS lines and pick the one that matches material, function, and product form most closely.
how to find HS-6 codes for chemicals
Use this topic to narrow your shortlist, then validate the final code against legal wording.
uses of sulphites in food and industry
Use this topic to narrow your shortlist, then validate the final code against legal wording.
understanding sulphite import regulations
Check the exact product specs and destination-country tariff notes before finalizing the code.
navigating HS codes for inorganic chemicals
Use this topic to narrow your shortlist, then validate the final code against legal wording.
sodium thiosulphate applications in photography
Use this topic to narrow your shortlist, then validate the final code against legal wording.
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 283210 and HS-6 283220?
- HS-6 283210 covers sodium sulphite, while HS-6 283220 includes all other sulphites like calcium or magnesium sulphite.
- Can I use HS-4 2832 for all types of sulphites?
- No, you must select the correct HS-6 subheading based on the specific type of sulphite you are importing.
- What are common uses for sodium thiosulphate?
- Sodium thiosulphate is commonly used in photography, as a dechlorinating agent, and in chemical analysis.
- How do I classify my product if it contains multiple sulphites?
- Identify the primary component of your product and select the corresponding HS-6 subheading that matches its chemical composition.
- What should I do if I'm unsure about the correct HS code?
- Consult with a customs broker or refer to official customs guidelines to ensure accurate classification.
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Heading-browse mode uses HS-6 283200 (first line of this block).