Copper Sulfate Pentahydrate Crystals
Copper sulfate pentahydrate (CuSO4·5H2O), known as blue vitriol, is used in agriculture as a fungicide and in electroplating, classified in HTS 2833.29.51.90 as other sulfates. Its defined chemical structure as a copper salt confirms Chapter 28 placement.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If imported as anhydrous copper sulfate
Different hydration states have distinct subheadings within sulfates.
If formulated as a pesticide/herbicide product
Pesticides containing copper sulfate classify under Chapter 38 by function.
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Import Tips & Compliance
• Include REACH or TSCA certification for chemical registration in the U.S
• Label with GHS pictograms for corrosive properties and proper PPE requirements
• Specify crystal size (e.g
• large technical grade) to avoid confusion with fine powder forms
Related Products under HTS 2833.29.51.90
Sodium Lauryl Sulfate Powder
Sodium lauryl sulfate (SLS) is an anionic surfactant classified as a sulfate of sodium under HTS 2833.29.51.90 due to its chemical structure featuring a sulfate group bonded to a lauryl chain. It is widely used in shampoos, soaps, and detergents for its foaming and cleansing properties.
Zinc Sulfate Heptahydrate Crystals
Zinc sulfate heptahydrate (ZnSO4·7H2O) is a colorless crystalline sulfate salt used in fertilizers and animal feed supplements, classified under HTS 2833.29.51.90 as an 'other' sulfate. Its chemical definition as a metal sulfate places it distinctly in Chapter 28.
Manganese Sulfate Monohydrate Powder
Manganese sulfate monohydrate (MnSO4·H2O) is a pale pink powder used as a micronutrient in fertilizers and batteries, falling under HTS 2833.29.51.90 for other sulfates. It qualifies as a chemically defined inorganic metal sulfate per Chapter 28 notes.
Ferrous Sulfate Heptahydrate Granules
Ferrous sulfate heptahydrate (FeSO4·7H2O) granules serve as an iron supplement in water treatment and animal nutrition, under HTS 2833.29.51.90 for other sulfates. Excluded from Chapter 31 as a pure chemically defined compound.
Nickel Sulfate Hexahydrate Solution
Nickel sulfate hexahydrate (NiSO4·6H2O) in aqueous solution is used in electroplating and catalyst production, classified under HTS 2833.29.51.90 as other sulfates. Remains in Chapter 28 despite solution form if chemically defined.
Ammonium Persulfate Crystals
Ammonium persulfate ((NH4)2S2O8) is a white crystalline oxidizer used in polymerization and etching, under HTS 2833.29.51.90 as other peroxosulfates not elsewhere specified. Chapter notes confirm classification for ammonium peroxysalts.