Carboxymethylcellulose Sodium USP Grade
USP-grade sodium carboxymethylcellulose is a pharmaceutical excipient for tablet binding and suspension stabilization. Classified in HTS 3912.31.00.90 as other carboxymethylcellulose salts in primary forms, meeting subheading note purity criteria. Imported as powder for direct use in drug manufacturing.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If cellulose nitrates instead of ethers
Cellulose nitrates have different chemical derivatives, classified earlier in heading 3912.
If pre-formulated into medicaments
Mixtures for therapeutic use shift to Chapter 30, not primary polymers.
If natural gums modified with CMC
Natural gum modifications fall under heading 3913, separate from pure cellulose derivatives.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Provide USP/EP certificates proving compliance with pharmacopeia standards for duty-free eligibility under certain programs
• Label as 'not for retail' to prevent misclassification into consumer packaging under 3923/3924
Related Products under HTS 3912.31.00.90
CMC Sodium Salt for Detergents
Carboxymethylcellulose sodium salt prevents soil redeposition in laundry detergents. Classified HTS 3912.31.00.90 as other CMC salts in primary granular form for industrial use. Meets chapter notes for pure cellulose ether polymers.
High-Purity CMC for Cosmetics
High-purity carboxymethylcellulose sodium for cosmetic creams and lotions as a rheology modifier. HTS 3912.31.00.90 covers this as other CMC salts in primary form, with >95% polymer content. Used in personal care formulations.
Technical Grade CMC Flakes
Technical-grade CMC in flake form for paper sizing and textile printing. Falls under HTS 3912.31.00.90 as other carboxymethylcellulose salts per predominant monomer rule. Primary form for industrial processing.
Pharma-Grade Cross-Linked CMC
Cross-linked sodium carboxymethylcellulose for controlled-release drug matrices. Still primary polymer under HTS 3912.31.00.90 as chemically modified CMC salt per subheading note (a)(3). Imported for advanced pharma applications.
Battery CMC Binder Powder
CMC sodium binder for lithium-ion battery electrode slurries. HTS 3912.31.00.90 as other carboxymethylcellulose salt in primary form for electronics manufacturing. Critical for EV battery production.
Sodium Carboxymethylcellulose (CMC) Powder
Sodium carboxymethylcellulose (CMC) is a water-soluble cellulose ether derivative used as a thickener and stabilizer in food and pharmaceuticals. It falls under HTS 3912.31.00.90 as 'Other' carboxymethylcellulose and its salts in primary form, not specifically named elsewhere in the subheading. This powdered form is imported for industrial formulation.