What are sodium metasilicates used for?
Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.
HS-4 · Heading
2839 — Silicates; commercial alkali metal silicates
Chapter 28: Inorganic chemicals
Plain-language overview
Use HS-4 2839 when importing or exporting silicates, such as sodium metasilicates, which are often found in detergents and cleaning products. Understanding the specific subheadings can help you accurately classify your goods and avoid potential customs issues.
When deciding between HS-6 283911 for sodium metasilicates and HS-6 283919 for other sodium silicates, consider the specific chemical composition of your product. If your shipment includes sodium metasilicates, you should classify it under 283911, while other sodium silicates that do not fall under this category should go under 283919.
If your product is a commercial alkali metal silicate that is not sodium-based, you would use HS-6 283990. This includes silicates made from potassium or other alkali metals, so ensure to check the product's formulation to select the correct code.
Keywords & topics
Useful terms traders and brokers use for this HS-4 heading.
sodium metasilicates · commercial alkali metal silicates · silicates classification · importing silicates · sodium silicates · potassium silicates · chemical composition silicates · detergents silicates · cleaning products silicates · alkali metal silicates
Examples
Drawn from the official tariff wording for this HS-4 heading. Always confirm against your published schedule and legal notes.
- Sodium metasilicate used in industrial cleaning agents
- Potassium silicate for agricultural applications
- Sodium silicate used in concrete production
- Alkali metal silicates in glass manufacturing
- Sodium silicates in adhesives and sealants
Common questions
Frequent classification questions with short practical guidance.
How to classify silicates for import?
Write down material, use, and product form first, then compare nearby lines before you lock the code.
What is the difference between sodium silicates and sodium metasilicates?
Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.
Which HS code for potassium silicates?
Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.
How to determine the correct HS code for silicates?
Match the product to the legal wording, then verify the final pick in your country tariff schedule before filing.
Are there any specific regulations for importing silicates?
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.
how to classify sodium metasilicates for customs
Check the exact product specs and destination-country tariff notes before finalizing the code.
differences between sodium silicates and sodium metasilicates
Compare adjacent HS lines and pick the one that matches material, function, and product form most closely.
importing commercial alkali metal silicates
Check the exact product specs and destination-country tariff notes before finalizing the code.
what is HS code 283911 used for
Use this topic to narrow your shortlist, then validate the final code against legal wording.
guidelines for importing silicates
Check the exact product specs and destination-country tariff notes before finalizing the code.
identifying silicates for trade compliance
Use this topic to narrow your shortlist, then validate the final code against legal wording.
packaging requirements for sodium silicates
Use this as a checklist topic, then confirm legal requirements with your broker or customs advisor.
best practices for classifying silicates
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 HS code for sodium metasilicates?
- The HS code for sodium metasilicates is **283911**.
- How do I classify a product that contains both sodium and potassium silicates?
- You should classify it based on the predominant silicate type; if sodium is predominant, use **283919**; if potassium, use **283990**.
- Are there any specific import regulations for silicates?
- Yes, ensure to check local regulations as some silicates may have restrictions or require special documentation.
- Can I use HS-4 2839 for all types of silicates?
- No, you must choose the correct HS-6 subheading based on the specific type of silicate.
- What are common uses for sodium silicates?
- Sodium silicates are commonly used in detergents, adhesives, and as a concrete additive.
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Heading-browse mode uses HS-6 283900 (first line of this block).