Sodium Carboxymethyl Cellulose (CMC)
Sodium carboxymethyl cellulose is a water-soluble derivative of cellulose, a natural polysaccharide, produced through chemical modification with sodium hydroxide and monochloroacetic acid. It falls under HTS 3913.90.20 as a polysaccharide derivative in primary form, used as a thickener in food, pharmaceuticals, and detergents.
Import Duty Rates by Country of Origin
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 derived from chemical synthesis rather than natural cellulose
Synthetic cellulose derivatives like regenerated cellulose fall under heading 3912 for cellulose and chemical derivatives.
If primarily functioning as a starch derivative or dextrin
Dextrins and modified starches, even polysaccharide-based, are classified in heading 3505 for prepared starches.
If imported as a formulated mixture with chemical additives
Chemical preparations containing polysaccharides as minor components fall under 3824, not primary polymers.
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Import Tips & Compliance
• Verify purity and degree of substitution via certificate of analysis to confirm classification as a primary form polysaccharide derivative
• Ensure documentation specifies 'in primary forms' (e.g
• powder, not formulated products) to avoid reclassification
Related Products under HTS 3913.90.20
Hydroxypropyl Methylcellulose (HPMC)
Hydroxypropyl methylcellulose is an inert, viscoelastic polysaccharide derived from cellulose through etherification, widely used in pharmaceuticals for capsule shells and controlled-release formulations. Classified under HTS 3913.90.20 as a modified natural polysaccharide in primary form like powder or granules.
Xanthan Gum
Xanthan gum is a polysaccharide produced by bacterial fermentation of glucose or sucrose, used as a stabilizer in food and oil drilling fluids. It qualifies under HTS 3913.90.20 as a microbial polysaccharide derivative in primary form.
Guar Gum Powder
Guar gum, extracted from guar beans, is a galactomannan polysaccharide used as a natural thickener in hydraulic fracturing and food. Classified in HTS 3913.90.20 as a natural polysaccharide derivative in primary powder form.
Carboxymethyl Guar Gum
Carboxymethyl guar gum is a chemically modified derivative of guar gum polysaccharide, enhancing water solubility for use in cosmetics and oil recovery. HTS 3913.90.20 applies to such polysaccharide derivatives in primary forms.
Hydroxyethyl Cellulose
Hydroxyethyl cellulose is an non-ionic cellulose ether polysaccharide used in paints, cosmetics, and construction. It is a derivative under HTS 3913.90.20 in primary granular or powder form.
Dextran Powder
Dextran is a bacterial polysaccharide used in pharmaceuticals as plasma volume expander. HTS 3913.90.20 covers this microbial derivative in primary form.