Carboxymethylcellulose Sodium USP Grade
Pharmaceutical-grade sodium carboxymethylcellulose used in eye drops and tablet binders, supplied as a fine white powder. Classified under HTS 3912.31.00 for carboxymethylcellulose salts in primary forms, not further processed into articles.
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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 pre-formulated into pharmaceutical dosage like eye drops
Finished medicaments shift to Chapter 30, not primary forms in Chapter 39.
If highly substituted or cross-linked variants
Modified polymers go to 'Other' per chapter notes if not purely CMC salt.
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Import Tips & Compliance
• Include FDA Drug Master File or USP certificate; test for viscosity and degree of substitution to match subheading specs; avoid bulk packaging over 25kg to prevent 'article' reclassification
Related Products under HTS 3912.31.00
Sodium Carboxymethylcellulose (CMC) Powder
Sodium carboxymethylcellulose is a water-soluble cellulose ether derived from cellulose, used as a thickener and stabilizer in food and pharmaceuticals. It falls under HTS 3912.31.00 as it is explicitly carboxymethylcellulose and its salts in primary form, meeting the 95% monomer content requirement for classification.
CMC Food Grade Type 7F
Food-grade carboxymethylcellulose sodium (Type 7F) with medium viscosity, used in ice cream and gluten-free baking as stabilizer. HTS 3912.31.00 applies to this primary form cellulose ether salt without further processing.
Carboxymethylcellulose Calcium Salt
Calcium salt of carboxymethylcellulose used in low-sodium formulations and as a suspending agent. Falls squarely under HTS 3912.31.00 as a carboxymethylcellulose salt in primary powder form.
Industrial CMC LV (Low Viscosity)
Low viscosity sodium carboxymethylcellulose for detergents, paper coatings, and textiles. Classified in HTS 3912.31.00 as primary form cellulose ether salt per polymer content rules.
Pharmaceutical Excipient CMC 12M8P
High-purity CMC 12M8P (medium viscosity, pharma grade) for sustained-release tablets. HTS 3912.31.00 covers this carboxymethylcellulose salt in primary form.
Sodium CMC for Toothpaste Grade
Specialty sodium carboxymethylcellulose for toothpaste thickening, providing suspension and stability. Primary form classification under HTS 3912.31.00 as CMC salt.