Paper Sizing Grade CMC Solution Powder
A high-purity carboxymethylcellulose (CMC) powder with ≥90% content, used for surface sizing in paper manufacturing to improve printability. It is imported as a dry powder in primary form and classified under tariff item 3912.31.00 as a cellulose ether.
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 sizing agent is a cellulose ether other than CMC
Other cellulose ethers are classified under this subheading.
If the product is formulated with other sizing agents
Finishing agents for papermaking are covered under this heading.
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 labeled as carboxymethylcellulose for paper sizing to avoid misclassification
• Keep records of the manufacturing process to demonstrate it is in primary form
• If importing in bulk, verify if the shipment requires a Canadian Chemical Producers Association (CCPA) compliance statement
Related Products under Tariff item 3912.31.00
Battery CMC Binder Powder
A sodium carboxymethylcellulose (CMC) binder used in lithium-ion battery electrode slurries, imported in primary powder form. It is classified under tariff item 3912.31.00 as a cellulose ether, critical for EV battery production.
Battery Grade Carboxymethylcellulose for Lithium-Ion
Battery grade carboxymethylcellulose is an ultra-pure CMC powder used as a binder in lithium-ion battery anodes. It is a carboxymethylcellulose salt in primary form, which is covered by tariff item 3912.31.00. The product has a high CMC content and is supplied as a powder.
Carboxymethylcellulose Calcium Salt
Carboxymethylcellulose calcium salt is a cellulose ether derivative used as a suspending agent and stabilizer in low-sodium food and pharmaceutical formulations. It is supplied as a powder in primary form, which is the form covered by this tariff item. As a salt of carboxymethylcellulose, it falls directly under tariff item 3912.31.00.
Carboxymethylcellulose Sodium Salt Granules (High Purity)
Carboxymethylcellulose sodium salt granules are a high-purity granular form of CMC used in pharmaceutical tablet binders. They are a carboxymethylcellulose salt in primary form, which is covered by tariff item 3912.31.00. The granules are not further processed.
Carboxymethylcellulose Sodium USP Grade
Pharmaceutical-grade sodium carboxymethylcellulose is a fine white powder used in eye drops and as a tablet binder. It is a salt of carboxymethylcellulose in primary form, which is explicitly covered by tariff item 3912.31.00. The product is not further processed beyond its primary powder state.
CMC 7HOF Food Stabilizer
CMC 7HOF is a high-occupancy grade of sodium carboxymethylcellulose used as a food stabilizer in dairy products and sauces. It is supplied in powder form, which is a primary form under this tariff item. As a carboxymethylcellulose salt, it falls directly under tariff item 3912.31.00.