HS Code for Strontium oxide

Strontium oxide is classified under HS code 2816.40. This code is part of the inorganic chemicals chapter and specifically covers the oxides, hydroxides, and peroxides of strontium or barium. Strontium oxide (SrO) is a basic oxide formed by the thermal decomposition of strontium carbonate or strontium nitrate. In the Harmonized System, chemicals are grouped by their elemental composition and functional groups. Heading 2816 groups strontium and barium compounds together because of their similar chemical properties as alkaline earth metals. The classification 2816.40 is used for the pure chemical substance. It is an important industrial material used in the manufacture of specialty glasses, particularly for television screens and optical equipment, where it helps block X-ray emissions and improves the refractive index of the glass.

Products Included

• Pure strontium oxide (SrO)
• Strontium hydroxide (Sr(OH)2)
• Strontium peroxide (SrO2)
• Anhydrous strontium oxide powder
• Strontium hydroxide monohydrate

Common Misclassification

Strontium oxide is occasionally misclassified under 2816.10, which is the code for magnesium hydroxide and peroxide. While both are alkaline earth metal derivatives, the HS system separates them into distinct subheadings. Another common error is confusing it with strontium carbonate (2836.92). While strontium oxide is often derived from the carbonate, they are chemically distinct functional groups (oxide vs. carbonate) and must be declared under their respective headings. Furthermore, mixtures containing strontium oxide intended for specific catalytic uses might be moved to heading 38.15.

FAQ

What is the HS code for strontium oxide?

The HS code for strontium oxide, as well as strontium hydroxide and peroxide, is 2816.40.

Does 2816.40 include barium compounds?

Yes, HS code 2816.40 covers the oxides, hydroxides, and peroxides of both strontium and barium.