Anhydrous Sodium Sulfate USP Grade
Pure anhydrous disodium sulfate (Na2SO4) meeting United States Pharmacopeia standards, used as an excipient in pharmaceutical formulations for tablets and capsules. It falls under HTS 2833.11.5010 as anhydrous sodium sulfate, a chemically defined inorganic salt without water of crystallization. This grade ensures high purity for medical applications.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If containing water of crystallization
Hydrated sodium sulfate (e.g., decahydrate or Glauber's salt) is classified under 'Other sodium sulfates' rather than anhydrous.
If mixed with hydrogen peroxide stabilizers
Peroxosulfates or stabilized sulfate-peroxide compounds shift to Chapter 28 peroxides heading.
If formulated as diammonium phosphate fertilizer blend
Fertilizer mixtures with >50% diammonium hydrogenorthophosphate fall under Chapter 31, excluding pure inorganic salts.
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Import Tips & Compliance
• Verify USP certification and provide Certificate of Analysis (CoA) for purity; ensure anhydrous state confirmed by moisture content <0.5%; watch for misclassification as hydrated form
Related Products under HTS 2833.11.50.10
Industrial Anhydrous Sodium Sulfate 99.5% Purity
High-purity anhydrous Na2SO4 used in glass manufacturing as a fining agent to remove bubbles and improve clarity. Classified under HTS 2833.11.5010 for its anhydrous form and chemical definition as disodium sulfate. Essential for producing flat glass and containers.
Anhydrous Sodium Sulfate for Detergent Filler
Anhydrous disodium sulfate serving as an economical filler and bulk agent in powdered laundry detergents. HTS 2833.11.5010 applies to this pure, water-free inorganic sulfate compound. Helps achieve desired powder density and flow properties.
Laboratory Grade Anhydrous Sodium Sulfate
ACS reagent grade anhydrous Na2SO4 used for drying organic solvents in chemical laboratories by absorbing residual water. Falls under HTS 2833.11.5010 as chemically defined anhydrous disodium sulfate. High purity ensures no contamination in analytical procedures.
Technical Grade Anhydrous Sodium Sulfate 99%
Technical grade anhydrous disodium sulfate (99% purity) used as a filler in textile printing pastes and dyes. Classified in HTS 2833.11.5010 for anhydrous form, providing viscosity control and cost reduction. Common in pigment printing processes.
Anhydrous Sodium Sulfate for Paper Manufacturing
Anhydrous Na2SO4 used in the kraft process for pulp digestion and as a cooking liquor component in paper production. HTS 2833.11.5010 covers this anhydrous inorganic sulfate essential for cellulose fiber separation. Recycled from rayon production waste.
Pharma Excipient Anhydrous Sodium Sulfate NF
National Formulary (NF) grade anhydrous disodium sulfate used as diluent in solid oral dosage forms and controlled-release matrices. Under HTS 2833.11.5010 as pure anhydrous sulfate meeting pharmacopeial standards. Non-hygroscopic properties ideal for tableting.