Copper Sulfate Pentahydrate Crystals
Blue crystalline powder known as chalcanthite, with the formula CuSO4·5H2O, used in agriculture as a fungicide and in chemistry labs. Classified under HTS 2833.25.00.00 as a sulfate of copper, meeting Chapter 28 criteria for chemically defined inorganic compounds. Excludes organo-inorganic compounds per chapter notes.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If double or complex salt with another metal or ammonium
Chapter notes specify double salts of sulfates classify in 2842, not simple copper sulfates in 2833.
If mineral/chemical fertilizer with copper sulfate as active ingredient
Chapter 31 note 2 excludes fertilizers from Chapter 28; classified by end use in mineral fertilizers.
If prepared as mixture for electroplating baths or lab reagents
Complex chemical preparations not purely chemically defined fall in 3824 per exclusions.
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Import Tips & Compliance
• Verify purity and hydrate form via lab analysis to confirm classification as chemically defined copper sulfate under Chapter 28
• Provide Certificate of Analysis (CoA) showing copper content and absence of organic stabilizers to avoid misclassification
• Ensure packaging labels comply with EPA pesticide regulations if for agricultural use; watch for REACH-like restrictions on heavy metals
Related Products under HTS 2833.25.00.00
Anhydrous Copper Sulfate Powder
White powder form of CuSO4 without water of hydration, used in catalysts and analytical chemistry. Falls under HTS 2833.25.00.00 as other sulfates of copper, distinct from hydrated forms but same chemical classification. Pure inorganic compound per Chapter 28 definitions.
Copper(II) Sulfate for Aquaculture
Technical grade copper sulfate crystals for pond algae control in fish farming. HTS 2833.25.00.00 covers sulfates of copper regardless of end use, as long as chemically defined. Used in dilute solutions for water treatment.
Laboratory Grade Copper Sulfate
High-purity CuSO4·5H2O (ACS reagent grade) for analytical and educational use. Precisely classified in 2833.25.00.00 as copper sulfate, chemically defined per Chapter 28 Note 1. Supplied in small bottles for lab safety.
Electroplating Grade Copper Sulfate
Refined copper sulfate used in acidic copper plating baths for electronics manufacturing. HTS 2833.25.00.00 for pure copper sulfates; purity optimized for uniform deposition. Excludes prepared plating solutions.
Copper Vitriol Blue Crystals
Traditional name for hydrated copper sulfate pentahydrate, used in pigments and dyes. Classified under 2833.25.00.00 as sulfate of copper; historical vitriol but modern chemical definition applies. Deep blue color from Cu2+ ions.
Feed Grade Copper Sulfate Monohydrate
CuSO4·H2O powder with controlled particle size for livestock mineral supplements. Still classified 2833.25.00.00 as chemically defined copper sulfate; feed grade specifies low heavy metals. Meets AAFCO purity standards.