Sulfuric Acid Pickling Waste from Copper Processing
Spent sulfuric acid from copper strip cleaning operations, saturated with copper sulfate crystals. Falls under HTS 3825.50.00.00 as metal-pickling liquor waste per chapter note. Valuable for copper recovery.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If regenerated to fresh sulfuric acid purity
Fresh sulfuric acid for industrial use classified under heading 2807.
If crystallized copper sulfate separated
Recovered copper sulfate falls under sulfate salts in heading 2833.
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Import Tips & Compliance
• Quantify copper content for potential RCRA listed waste (K062)
• Use acid-resistant bulk tankers for transport
• Document recycling value to qualify for certain exemptions
Related Products under HTS 3825.50.00.00
Spent Hydraulic Fluid from Industrial Machinery
Used hydraulic oil from heavy machinery pumps and cylinders, contaminated with water, particulates, and degraded additives, unfit for further use. Falls under HTS 3825.50.00.00 as wastes of hydraulic fluids per chapter note 6(d). Typically requires recycling or disposal as hazardous waste.
Contaminated Hydraulic Fluid from Mining Equipment
Degraded hydraulic fluid from heavy mining excavators, mixed with ore dust and water, unfit for lubrication. HTS 3825.50.00.00 applies to hydraulic fluid wastes as per chapter note 6(d). High viscosity and particulate load.
Biodegradable Hydraulic Fluid Waste
Spent vegetable oil-based hydraulic fluid from environmentally sensitive equipment, emulsified with water. HTS 3825.50.00.00 covers all hydraulic fluid wastes regardless of base per chapter note 6(d). Biodegradability doesn't change waste classification.
Aircraft Brake Fluid Waste
Used MIL-PRF-83282 synthetic hydraulic fluid from aircraft brake systems, contaminated during maintenance. Classified HTS 3825.50.00.00 as brake fluid waste under chapter note 6(d). Meets stringent aviation specs when new.
Steel Mill Spent Pickling Liquor
Hydrochloric acid waste from continuous steel pickling lines, containing high iron chloride concentrations. Under HTS 3825.50.00.00 as metal-pickling liquor waste, chapter note 6(d). Major source of ferrous chloride for water treatment.
Marine Engine Antifreeze Waste
Used extended-life coolant from marine diesel engines, contaminated with seawater and cylinder liner corrosion products. HTS 3825.50.00.00 for anti-freeze wastes, chapter note 6(d). Saltwater contamination accelerates degradation.