Filler Dispersion Aid
Filler Dispersion Aid is an anionic polymer dispersant used to prevent precipitated calcium carbonate (PCC) from agglomerating in paper filler slurries. It enables high filler loading for improved opacity in paper products. This preparation is classified under tariff item 3809.92.00 as a finishing agent of a kind used in the paper industry.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the product is used in the textile or like industries
The same heading covers finishing agents for textile, paper, leather or like industries; the textile subheading applies when the primary use is in textiles.
If the product is a chemical preparation not specifically a finishing agent
Chapter 38 Note 4 excludes products described by name or function from heading 38.27, but other preparations may fall under heading 38.24 if not classifiable as finishing agents.
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
• Ensure the product is clearly identified as a paper industry finishing preparation, not a separate chemical compound, to avoid reclassification
• Keep technical documentation showing its use in PCC slurry dispersion for CBSA verification
• Verify whether the Most-Favoured-Nation (MFN) duty rate applies or if a preferential rate under a free trade agreement is available
Related Products under Tariff item 3809.92.00
AKD Wax Emulsifier for Paper Sizing
A cationic emulsifier for alkyl ketene dimer (AKD) wax used in paper sizing. It contains aromatic dispersing agents and is applied during paper production to impart water repellency, qualifying as a finishing preparation for the paper industry.
AKD Wax Emulsion Sizing Agent
An alkyl ketene dimer (AKD) wax emulsion used as a hydrophobic sizing agent in paper manufacturing to impart water resistance. It is a finishing preparation for the paper industry.
Alum Precipitating Aid
A polymeric coagulant aid used with papermaker's alum to enhance charge neutralization and precipitation. It improves retention and drainage, qualifying as a finishing preparation for the paper industry.
Aromatic Guar Gum Derivative for Paper
A hydroxypropyl guar derivative modified with aromatic quaternary groups, used as a dry strength additive and drainage aid in fine paper production. The aromatic content exceeds 5%, classifying it as a paper finishing preparation.
Aromatic PolyDADMAC Paper Retention Aid
A polyquaternary ammonium polymer with aromatic groups exceeding 5%, used as a retention and drainage aid in papermaking. It improves fiber and filler retention, qualifying as a finishing preparation for the paper industry.
Aromatic Rosin Sizing Emulsion
A water-based emulsion containing over 5% aromatic substances, used as a surface sizing agent in paper manufacturing. It controls ink penetration and improves print quality, making it a finishing preparation for the paper industry.