Wastes of metal-pickling liquors, hydraulic fluids, brake fluids and anti-freeze fluids
Residual products of the chemical or allied industries, not elsewhere specified or included; municipal waste; sewage sludge; other wastes specified in note 6 to this chapter: > Wastes of metal-pickling liquors, hydraulic fluids, brake fluids and anti-freeze fluids
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Products classified 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.
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.
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.
Waste Metal Pickling Liquor from Steel Processing
Spent hydrochloric acid solution used in steel pickling to remove rust and scale, now contaminated with iron salts and no longer viable for use. Classified under HTS 3825.50.00.00 as waste of metal-pickling liquors per chapter note 6(d). These hazardous wastes require special handling for import.
Used Brake Fluid from Automotive Service
Contaminated glycol-ether brake fluid recovered from vehicle brake systems during service, with moisture absorption and particulate buildup rendering it unfit. Classified in HTS 3825.50.00.00 as wastes of brake fluids under chapter note 6(d). High toxicity requires special import protocols.
Waste Antifreeze Coolant from Fleet Vehicles
Spent ethylene glycol-based antifreeze from truck and car cooling systems, contaminated with rust inhibitors and metals, no longer suitable for use. HTS 3825.50.00.00 covers wastes of anti-freeze fluids as specified in chapter note 6(d). Often recycled for propylene glycol recovery.
Spent Phosphoric Acid Pickling Liquor
Used phosphoric acid bath waste from metal surface treatment in automotive manufacturing, laden with metal phosphates and sludge. Under HTS 3825.50.00.00 as metal-pickling liquor waste per chapter note. Highly acidic and regulated as hazardous.
Used DOT 4 Brake Fluid Waste
High-boiling-point spent brake fluid from high-performance vehicles, absorbed moisture and contaminants make it hazardous. Covered by HTS 3825.50.00.00 for brake fluid wastes under chapter note 6(d). Corrosive properties demand careful handling.
Waste Ethylene Glycol Antifreeze from Engine Flush
Drained antifreeze from engine cooling system flushes, containing combustion byproducts and seal materials. HTS 3825.50.00.00 for anti-freeze fluid wastes as defined in chapter note 6(d). Toxic methanol content possible.
Waste Propylene Glycol Heat Transfer Fluid
Spent glycol mixture from industrial heat exchangers and HVAC systems, degraded thermal properties. HTS 3825.50.00.00 as anti-freeze fluid waste per chapter note 6(d). Less toxic than ethylene glycol but still regulated.
Synthetic Brake Fluid Waste from Racing Applications
High-performance silicone or DOT 5 spent brake fluid from motorsport applications, with absorbed moisture and track contaminants. Covered by HTS 3825.50.00.00 as brake fluid wastes regardless of synthetic composition. Superior compressibility when new.