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
Short phrases that describe this HS-4 heading when you're searching or filtering schedules.
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
How people often phrase their search when they're trying to classify goods like yours.
- What is the HS code for sodium sulphite?
- How to classify thiosulphates for import?
- Are there different types of sulphites?
- What are the uses of sodium thiosulphate?
- How do I determine the correct HS-6 line?
- What is the duty rate for sulphites?
Related topics
Longer phrases that come up when you're comparing codes or talking to a broker.
- importing sodium sulphite under HS-4 2832
- classification of thiosulphates in trade
- differences between sodium and calcium sulphite
- how to find HS-6 codes for chemicals
- uses of sulphites in food and industry
- understanding sulphite import regulations
- navigating HS codes for inorganic chemicals
- sodium thiosulphate applications in photography
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.
Continue classification
Parent context
Nearby siblings
Related actions
Next best action
Pick one of these actions to move from reading to a defensible classification decision.
Browse this heading in the lookup
Heading-browse mode uses HS-6 283200 (first line of this block).