HS Code for Chromium oxide

Chromium oxide is classified under HS code 2819.90, which falls within Chapter 28 of the Harmonized System, covering inorganic chemicals and precious metal compounds. This specific classification is determined by the chemical composition of the product as a separate chemically defined compound. According to the General Rules of Interpretation (GRI) 1, classification is determined by the terms of the headings and any relative section or chapter notes. Heading 2819 specifically covers chromium oxides and hydroxides. While chromium trioxide is carved out into its own subheading (2819.10), all other forms of chromium oxide, most notably chromium sesquioxide (Cr2O3), are relegated to the residual subheading 2819.90. This substance is typically a green, water-insoluble solid used in various industrial applications, including the production of chromium metal and as a refractory material. To qualify for this code, the product must not be mixed with other substances for use as a pigment, as that would shift the classification to Chapter 32.

Products Included

• Chromium sesquioxide (Cr2O3)
• Anhydrous chromium oxide
• Chromium oxide green (chemically pure)
• Chromic oxide
• Dichromium trioxide

Common Misclassification

A frequent point of confusion occurs between HS code 2819.90 and HS code 3206.20. While 2819.90 is reserved for chemically pure chromium oxide, 3206.20 is used for pigments and preparations based on chromium compounds. If the chromium oxide has been mixed with extenders, binders, or other chemicals to facilitate its use as a coloring agent, it must be classified under 3206.20. Additionally, chromium trioxide (chromic acid) is often confused with other oxides but must be strictly classified under 2819.10 due to its specific chemical structure and distinct subheading.

FAQ

What is the HS code for chromium oxide?

The HS code for chemically pure chromium oxide (excluding chromium trioxide) is 2819.90.

How does 2819.90 differ from 2819.10?

HS code 2819.10 is specifically for chromium trioxide (CrO3), whereas 2819.90 covers all other chromium oxides, such as chromium sesquioxide (Cr2O3).