HS 283325 Of copper

What products does HS 283325 cover?

This subheading covers sulfates of copper, specifically those falling under Heading 2833, which encompasses sulfates, alums, and peroxosulfates (persulfates). According to the Harmonized System Explanatory Notes (HSENs) for Chapter 28 and the official USITC Harmonized Tariff Schedule (HTSUS) and EU TARIC definitions, HS 2833.25.00 applies to copper sulfates, which are inorganic chemical compounds. A primary example is copper(II) sulfate (CuSO₄), often encountered as the pentahydrate (CuSO₄·5H₂O), known as blue vitriol, widely used as a fungicide, algaecide, and in electroplating. The classification is determined by the chemical composition, specifically the presence of the sulfate anion and copper cation, without regard to purity levels, provided it remains a distinct chemical compound.

What falls outside HS 283325?

The following products are excluded from HS 283325: copper compounds that are not sulfates, such as copper oxides (Heading 2825) or copper chlorides (Heading 2827). Additionally, mixtures containing copper sulfate but where the copper sulfate is not the predominant component or where the product is clearly a preparation for a specific use, such as certain pesticide formulations (Chapter 38), would be excluded. For instance, a prepared fungicide containing copper sulfate along with other active ingredients and inert carriers would likely be classified under Chapter 38, specifically subheading 3808.92, as a fungicide, rather than as a pure chemical compound under Chapter 28. Similarly, copper sulfate solutions that are not merely dissolved copper sulfate but are formulated for a specific application might also fall outside this heading.

What are common classification mistakes for HS 283325?

A common error is misclassifying copper sulfate preparations or mixtures as pure copper sulfate under HS 283325. Importers often overlook General Interpretative Rule (GRI) 3(b), which dictates that mixtures, composite goods, and goods put up in sets for retail sale are classified by the material or component which gives them their essential character. If copper sulfate is merely an ingredient in a pesticide or a plating bath preparation, the essential character is often derived from the intended use or the other active components, leading to classification in Chapter 38 or other relevant chapters. Another mistake is confusing copper sulfate with other copper salts, such as copper carbonate, which would fall under Heading 2836, leading to incorrect duty rates and potential compliance issues. Always verify the exact chemical name and composition.

How should importers classify products under HS 283325?

The correct procedure for classifying products under HS 283325 involves first confirming the chemical identity as a copper sulfate. Importers and customs brokers should obtain a detailed Certificate of Analysis (CoA) or Safety Data Sheet (SDS) from the manufacturer, clearly stating the chemical name (e.g., copper(II) sulfate) and its purity. This documentation is crucial for demonstrating that the product is indeed a distinct chemical compound of copper sulfate, rather than a mixture or preparation. Apply GRI 1, which states that classification shall be determined according to the terms of the headings and any relative section or chapter notes. If the product is a pure or commercially pure copper sulfate, then HS 2833.25.00 is appropriate. For any mixtures, refer to GRI 3(b) to determine the essential character and classify accordingly, likely outside Chapter 28.