HS Code for Zinc borate

Zinc borate is classified under HS code 2840.20, which specifically covers "Other borates" within the inorganic chemicals chapter. Heading 2840 is dedicated to borates and peroxoborates (perborates). Zinc borate is a synthetic inorganic compound, typically appearing as a white crystalline powder. Under the Harmonized System, chemical compounds that are chemically defined and not mixed with other substances are generally classified in Chapter 28. Since zinc borate is a salt of an inorganic acid (boric acid) and a metal base (zinc), it fits perfectly within the scope of this heading. The subheading 2840.20 is used because zinc borate is not disodium tetraborate (borax), which has its own specific subheadings 2840.11 and 2840.19. The classification remains consistent regardless of the hydration state of the zinc borate, provided it remains a single chemically defined compound. This classification is essential for regulatory compliance, as it distinguishes pure chemical additives from prepared mixtures used in industrial applications.

Products Included

• Anhydrous zinc borate
• Zinc borate heptahydrate
• Zinc borate 2335 (industrial grade)
• Flame retardant zinc borate powder
• Smoke suppressant zinc borate additives

Common Misclassification

Zinc borate is often misclassified under heading 3809, which covers finishing agents or dye carriers used in the textile or paper industries. While zinc borate is used as a flame retardant in these industries, heading 3809 is only appropriate if the product is a mixture or a preparation. If the zinc borate is a pure, chemically defined compound, Chapter 28 must be used. Another common error is classification under 3824, which is a residual heading for chemical products and preparations of the chemical or allied industries. However, following the hierarchy of the HS nomenclature, a specific chemical heading in Chapter 28 always takes precedence over the general preparation headings in Chapter 38, provided the substance is not a mixture.

FAQ

What is the HS code for Zinc borate?

The HS code for Zinc borate is 2840.20, categorized under other borates.

Can zinc borate be classified in Chapter 38?

Only if it is part of a prepared mixture or preparation. As a pure chemical compound, it must remain in heading 2840.