Copper Sulfate Pentahydrate Herbicide
A blue crystalline powder containing copper sulfate (CuSO4·5H2O), an inorganic compound used as a herbicide to control aquatic weeds and algae in ponds and irrigation canals. It is put up in retail packs for gardeners and farmers, falling under HTS 3808.93.20.00 because it is a herbicide preparation containing an inorganic substance. The product disrupts photosynthesis in target plants through copper ion release.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If imported in bulk for industrial formulation
Bulk copper sulfate without retail packaging or herbicide labeling falls under inorganic chemicals of Chapter 28.
If classified primarily as insecticide rather than herbicide
Products with dual use but insecticidal action predominant may shift to insecticide subheading.
If marketed as nitrogen fertilizer with secondary weed control
Fertilizer preparations with incidental herbicidal properties are classified in Chapter 31.
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Import Tips & Compliance
• Verify EPA registration and provide Safety Data Sheets (SDS) for inorganic active ingredients during customs clearance
• Ensure packaging meets retail sale requirements (under 5kg) to avoid reclassification as bulk chemical under 2828
• Label clearly with concentration of copper sulfate and hazard warnings to comply with FIFRA and TSCA regulations
Related Products under HTS 3808.93.20.00
Sodium Chlorate Weed Killer Spray
A ready-to-use spray formulation containing sodium chlorate (NaClO3), an inorganic oxidizing agent that desiccates and kills broadleaf weeds on driveways and paths. Packaged in aerosol cans for retail sale to homeowners, it qualifies under HTS 3808.93.20.00 as a herbicide with inorganic active substance. The strong oxidizer breaks down plant cell structures upon contact.
Ammonium Sulfamate Granular Herbicide
Water-soluble granules of ammonium sulfamate ((NH4)2SO3), an inorganic salt herbicide effective against woody plants and poison ivy when dissolved and sprayed. Sold in 1kg retail bags for backyard use, it fits HTS 3808.93.20.00 as a plant regulator/herbicide with inorganic substance. It acts systemically to inhibit enzyme activity in target plants.
Boric Acid Ant and Weed Control Powder
Dustable powder containing boric acid (H3BO3), an inorganic boron compound that kills weeds and repels insects when applied to soil or cracks. Retail shaker containers make it suitable for home use, classifying under HTS 3808.93.20.00 for herbicides with inorganic substances. It interferes with plant metabolism and insect digestion.
Potassium Arsenite Brush Killer
Liquid concentrate of potassium arsenite (KA3AsO3), a highly toxic inorganic arsenical herbicide for killing brush and invasive shrubs. Diluted for retail sprayer use by landowners, it is covered by HTS 3808.93.20.00 as a herbicide containing inorganic substance. Arsenic ions poison plant enzyme systems.
Sodium Metaborate Sprout Suppressant
Powdered sodium metaborate (NaBO2) applied to potato storage to prevent sprouting, acting as an anti-sprouting plant-growth regulator. Retail packs for small-scale farmers fit HTS 3808.93.20.00 as it contains an inorganic substance for such use. Boron inhibits cell division in sprout buds.
Calcium Cyanamide Plant Growth Regulator
Granular calcium cyanamide (CaCN2), an inorganic compound used as a plant growth regulator to enhance nodulation in legumes and control weeds. Sold in retail bags for organic farming, it falls under HTS 3808.93.20.00. Upon hydrolysis, it releases cyanamide which affects plant hormones.