Chemical Plant Scrubber Sludge
Wet scrubber solids from HCl absorption towers containing ammonium chloride crystals, arising from chemical plant operations. This is classified as other wastes from chemical or allied industries under Chapter Note 6(d), as it is a process residual not elsewhere specified.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | 6.5% | — | 6.5% |
| 🇲🇽Mexico | 6.5% | — | 6.5% |
| 🇺🇸United States | 6.5% | — | 6.5% |
| 🇩🇪Germany | 6.5% | — | 6.5% |
| 🇯🇵Japan | 6.5% | — | 6.5% |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the sludge is a prepared binder or other chemical product, not a waste
If the material is not considered waste but a usable chemical product, it may fall under heading 3824.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Provide a detailed chemical analysis and waste characterization report to support classification
• Confirm the sludge is not a separate chemically defined compound, which would fall under Chapter 28 or 29
• Check for any provincial environmental regulations governing the import of industrial waste
Related Products under Tariff item 3825.90.00
Brake Fluid Waste
Contaminated hydraulic brake fluid waste from automotive service centers, containing glycol ethers and corrosion inhibitors. This product is classified as waste of hydraulic fluids under Chapter Note 6(d) of Chapter 38, as it is not fit for further use as a primary product.
Clinical Waste Sharps Container
Sealed containers of used syringes, needles, and lancets from medical procedures, classified as clinical waste under Chapter Note 6(a). This waste requires special disposal procedures due to contamination with pathogens and pharmaceutical substances.
Dental Amalgam Waste
Mercury-contaminated amalgam scrap from dental clinics containing silver, tin, and unused fillings. This is classified as clinical waste under Chapter Note 6(a) due to its origin from medical procedures and heavy metal content, requiring special disposal.
Hydraulic Fluid Waste
Contaminated phosphate ester hydraulic fluid from industrial machinery containing wear metals. This is classified as waste of hydraulic fluids under Chapter Note 6(d), as it is not fit for further use as a primary product.
Lab Cleaning Solvent Waste
Spent IPA/acetone mixtures from laboratory glassware cleaning containing dissolved organics. This is classified as waste organic solvents under Chapter Note 6(b), as it is not fit for further use as primary products.
Metal Pickling Liquor Waste
Spent acid solutions from steel pickling containing iron salts and sulfuric acid. This is classified as waste of metal pickling liquors under Chapter Note 6(c), as it is a byproduct of metal processing and not fit for further use.