What types of products fall under HS-4 2528?

HS-4 2528 covers natural borates and their concentrates, including products like borax and kernite.

Can I classify boric acid under HS-4 2528?

Yes, as long as the natural boric acid contains not more than 85% H3BO3 calculated on the dry weight.

Are calcined borates included in this HS code?

Yes, calcined borates are included under HS-252800.

What should I do if my product is derived from brine?

If your product is derived from brine, it does not fall under HS-4 2528 and should be classified separately.

How do I ensure proper classification of my borate shipment?

Review the product specifications and ensure they meet the criteria outlined for HS-4 2528 before shipping.

HS-4 · Heading

2528 — Natural borates and concentrates thereof (whether or not calcined), but not including borates separated from natural brine; natural boric acid containing not more than 85 % of H3BO3 calculated on the dry weight

Chapter 25: Salt; sulphur; earths and stone

Plain-language overview

Use HS-4 2528 when importing natural borates or their concentrates, such as borax or kernite, which are often used in glass manufacturing or as fertilizers. For example, if you're shipping a container of borax powder, this code will likely apply.

When deciding between HS-6 lines, note that HS-252800 encompasses all natural borates and concentrates, including those that may be calcined. If your product is a natural borate not separated from brine and contains less than 85% H3BO3, this is the correct classification.

It's important to distinguish between natural borates and other forms. If your shipment involves borates derived from brine, they fall outside the scope of HS-4 2528. Ensure your product meets the criteria to avoid misclassification and potential delays.

Keywords & topics

Short phrases that describe this HS-4 heading when you're searching or filtering schedules.

natural borates · borax classification · boron compounds · boric acid shipping · calcined borates · borates for agriculture · borate concentrates · HS-4 2528 · importing borates · boron mineral products

Examples

Drawn from the official tariff wording for this HS-4 heading. Always confirm against your published schedule and legal notes.

Borax (sodium borate) used in glass production
Kernite, a natural borate mineral
Natural boric acid for agricultural use
Concentrated borates for chemical manufacturing
Calcined borates for industrial applications

Common questions

How people often phrase their search when they're trying to classify goods like yours.

What are natural borates used for?
How to classify borax for import?
Is boric acid under HS-2528?
What is the difference between borates and boric acid?
Are calcined borates included in HS-4 2528?
How to determine the correct HS code for boron products?

Questions & answers

For orientation only—the binding text is your national tariff and the WCO nomenclature your country uses.

What types of products fall under HS-4 2528?: HS-4 2528 covers natural borates and their concentrates, including products like borax and kernite.
Can I classify boric acid under HS-4 2528?: Yes, as long as the natural boric acid contains not more than 85% H3BO3 calculated on the dry weight.
Are calcined borates included in this HS code?: Yes, calcined borates are included under HS-252800.
What should I do if my product is derived from brine?: If your product is derived from brine, it does not fall under HS-4 2528 and should be classified separately.
How do I ensure proper classification of my borate shipment?: Review the product specifications and ensure they meet the criteria outlined for HS-4 2528 before shipping.