What is the difference between HS-6 251990 and HS-6 251991?

HS-6 251990 covers both pure and impure forms of fused or dead-burned magnesia, while HS-6 251991 is specifically for pure magnesium oxide.

What types of products can I classify under HS-6 251990?

You can classify fused magnesia, dead-burned magnesia, and magnesium oxide that is not natural magnesium carbonate under this HS code.

What are the common uses of dead-burned magnesia?

Dead-burned magnesia is commonly used in refractory linings, ceramic production, and as an electrical insulator.

How do I ensure accurate classification for my magnesia products?

Review product specifications and consult with a customs broker to determine the appropriate HS code based on the processing and purity of the magnesia.

Are there any specific import regulations for fused magnesia?

Yes, ensure compliance with local regulations regarding chemical imports, and check for any specific tariffs or duties that may apply.

Can I use HS-6 251990 for shipments of magnesium oxide powder?

Yes, as long as the magnesium oxide powder is fused or dead-burned and not derived from natural sources, it falls under HS-6 251990.

What should I do if my product contains small quantities of other oxides?

If your product contains small quantities of other oxides added before sintering, it still qualifies for HS-6 251990, but confirm with a customs expert for specific details.

How can I find out the tariff rates for dead-burned magnesia?

You can check the tariff schedule of your country or consult with a customs broker for the most accurate and up-to-date rates.

HS-6 251990: Magnesia, fused or dead-burned (sintered); whether or not containing small quantities of other oxides added before sintering, other magnesium oxide, whether or not pure, (not natural magnesium carbonate)

Plain-language overview

Use HS-6 251990 when importing or exporting fused magnesia or dead-burned magnesia, which are often used in refractory materials and industrial applications. For instance, shipments of sintered magnesia bricks for high-temperature furnaces fall under this code.

This code specifically covers magnesia that has been fused or dead-burned, distinguishing it from natural magnesium carbonate (HS-6 251810). While HS-6 251810 includes naturally occurring forms, HS-6 251990 pertains to processed forms that are typically more suitable for industrial use.

If you’re dealing with magnesium oxide that is not derived from natural sources, such as those containing small amounts of other oxides added before sintering, this is the correct classification. This is crucial for accurate tariff application and compliance.

When considering similar products, remember that HS-6 251991 covers pure magnesium oxide, while HS-6 251990 encompasses both pure and impure forms of fused or dead-burned magnesia, providing flexibility depending on your product specifications.

Keywords & topics

Useful terms traders and brokers use for this HS-6 subheading.

fused magnesia · dead-burned magnesia · magnesium oxide · refractory materials · industrial applications · sintered magnesia · pure magnesium oxide · magnesia bricks · chemical manufacturing · agricultural fertilizers · high-temperature furnaces · ceramic materials · electrical insulation · construction materials · building materials

Examples

Drawn from the official tariff wording for this HS-6 subheading. Always confirm against your published schedule and legal notes.

Shipments of dead-burned magnesia for use in refractory linings
Fused magnesia used in the production of ceramic materials
Magnesia bricks for high-temperature industrial furnaces
Magnesium oxide powder for chemical manufacturing
Processed magnesia used in agricultural fertilizers
Sintered magnesia for electrical insulation applications
Magnesia used in the production of glass and ceramics
Magnesia-based products for construction and building materials