HS Code for Iron hydroxide

Iron hydroxide is classified under HS code 282110, which falls within Chapter 28 of the Harmonized System, covering inorganic chemicals and precious metal compounds. Specifically, heading 2821 is dedicated to iron oxides and hydroxides, including earth colors containing 70% or more by weight of combined iron evaluated as Fe2O3. The classification of iron hydroxide (such as ferric hydroxide or ferrous hydroxide) under this code is determined by its chemical composition as a chemically defined compound. According to the General Rules of Interpretation (GRI) 1 and 6, the product is identified by its primary chemical structure. Iron hydroxides are typically produced through the precipitation of iron salts with alkaline solutions or through the oxidation of iron in moist environments. For customs purposes, it is essential to distinguish between synthetic iron hydroxides and natural earth pigments. If the substance is a synthetic chemical compound used as a precursor for pigments, catalysts, or water treatment chemicals, it remains firmly within 282110. The classification remains consistent regardless of the physical form, whether it is a dry powder, a paste, or a concentrated aqueous suspension, provided it has not been mixed with other substances to the point of becoming a prepared pigment or a diagnostic reagent.

Products Included

• Ferric hydroxide (Fe(OH)3)
• Ferrous hydroxide (Fe(OH)2)
• Hydrated iron oxides (synthetic)
• Iron oxyhydroxide (Goethite)
• Iron hydroxide polymorphs used in industrial catalysts

Common Misclassification

Iron hydroxide is frequently misclassified under HS code 253090, which covers natural earth colors. However, if the iron content (as Fe2O3) exceeds 70%, it must be moved to 2821. Another common error is using HS code 320611 or 320649, which are for prepared pigments. If the iron hydroxide has been mixed with binders, fillers, or other chemicals to create a finished paint or dye, it belongs in Chapter 32 rather than Chapter 28.

FAQ

What is the HS code for iron hydroxide?

The primary HS code for iron hydroxide is 282110, which covers iron oxides and hydroxides.

Is natural iron hydroxide classified differently?

Yes, if the iron hydroxide is a natural earth color containing less than 70% combined iron by weight, it is classified under heading 2530. Synthetic versions are always under 2821.