Paper Pulping Sodium Sulfate
High-purity Na2SO4 for kraft process in paper pulp digestion, aiding lignin removal. HTS 2833.11.5050 for other disodium sulfate, chemically pure excluding Chapter 47 wood pulp. Inorganic salt per definitions.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If in chemical wood pulp
Pulp products containing residuals go to Chapter 47.
If recycled from pulping waste
Impure recovered salts classify separately.
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Import Tips & Compliance
• Specify sulfidity content if relevant; corrosion-resistant packaging
• Avoid mix-up with black liquor residues
Related Products under HTS 2833.11.50.50
Anhydrous Sodium Sulfate USP Grade
Pure anhydrous disodium sulfate (Na2SO4) meeting United States Pharmacopeia standards for use in pharmaceutical manufacturing and laboratory applications. Classified under HTS 2833.11.5050 as 'other' disodium sulfate, distinct from crude or refined salt cake forms. It is a chemically defined inorganic salt used as a filler or drying agent.
Pharmaceutical Grade Glauber Salt
Hydrated disodium sulfate decahydrate (Na2SO4·10H2O), known as Glauber's salt, in pharmaceutical purity for use as a laxative or in compounding. Falls under HTS 2833.11.5050 as 'other' disodium sulfate, separate from industrial grades. Chemically defined per Chapter 28 notes.
Lab Reagent Sodium Sulfate Decahydrate
High-purity Na2SO4·10H2O crystals for analytical chemistry labs, used in precipitation and drying procedures. Classified in HTS 2833.11.5050 as other disodium sulfate due to its chemically defined nature excluding crude forms. Meets Chapter 28 purity standards.
ACS Grade Anhydrous Sodium Sulfate
American Chemical Society reagent grade anhydrous Na2SO4 for precise laboratory syntheses and extractions. HTS 2833.11.5050 covers this as other disodium sulfate, chemically defined inorganic compound per Chapter 28 Note 1. Excludes fertilizer or crude variants.
Technical Grade Disodium Sulfate Powder
Fine powder form of Na2SO4 for industrial glass manufacturing and detergent fillers, purity >99%. Under HTS 2833.11.5050 as other disodium sulfate, not qualifying as crude natural salt cake. Chemically defined salt per HTS Chapter 28.
Sodium Sulfate for Detergent Production
Granular disodium sulfate used as a bulking agent in powdered laundry detergents. HTS 2833.11.5050 applies to this pure form as other disodium sulfate, excluding Chapter 34 soap preparations. Meets inorganic salt definition.