Methylcellulose Pharmaceutical Grade
Pharmaceutical-grade methylcellulose, a cellulose ether derivative, supplied in primary form for tablet coatings and viscosifiers. HTS 3913.90.5000 covers this modified natural polymer.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If higher ether substitution levels
Per notes, excessive modification classifies under synthetic carboxymethylcellulose.
If pre-formulated into medicaments
Mixed with APIs for therapeutic use moves to Chapter 30 pharmaceuticals.
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Import Tips & Compliance
• Provide USP/NF compliance certificates; declare exact substitution degree per subheading notes; segregate from synthetic cellulose to prevent duty disputes
Related Products under HTS 3913.90.50.00
Sodium Carboxymethyl Cellulose Powder
Sodium carboxymethyl cellulose (CMC) is a chemically modified derivative of cellulose, a natural polymer, supplied in primary powder form for use in food, pharmaceuticals, and industrial applications as a thickener and stabilizer. It falls under HTS 3913.90.5000 as a modified natural polymer not elsewhere specified in primary forms.
Hydroxypropyl Methylcellulose Granules
Hydroxypropyl methylcellulose (HPMC) is a semi-synthetic derivative of cellulose used in primary granule form for coatings, capsules, and construction mortars. Classified under HTS 3913.90.5000 as a modified natural polymer in primary form, not covered elsewhere.
Alginic Acid Powder
Alginic acid, extracted from brown seaweed, is a natural polymer in primary powder form used in food gelling and pharmaceutical encapsulation. It is classified in HTS 3913.90.5000 as a natural polymer not elsewhere specified.
Sodium Alginate Flakes
Sodium alginate, a salt derivative of alginic acid, is provided in primary flake form for textile printing and food thickening applications. Falls under HTS 3913.90.5000 as a modified natural polymer.
Casein Modified Powder
Chemically hardened casein protein, derived from milk, in primary powder form for industrial coatings and adhesives. Classified under HTS 3913.90.5000 as hardened proteins, a modified natural polymer.
Guar Gum Derivative Powder
Hydroxypropyl guar, a modified form of guar gum natural polymer, in primary powder for fracturing fluids in oilfield applications. Classified as other modified natural polymers under HTS 3913.90.5000.