Industrial Salt Cake for Glass Manufacturing
Coarse-grained salt cake used primarily as a flux in flat glass production to lower melting temperatures of silica. Classified under HTS 2833.11.10.00 due to its identification as 'salt cake,' the standard technical grade sodium sulfate for industrial applications.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If in decahydrate form (Glauber's salt)
Hydrated sodium sulfate (10H2O) is separately provided for, excluding anhydrous salt cake
If chemically modified or mixed with organic stabilizers
Organo-inorganic mixtures excluded from Chapter 28 by note 2(b), moving to prepared chemical mixtures
If processed with hydrogen peroxide
Peroxosulfate combinations fall under separate peroxo heading
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Import Tips & Compliance
• Provide end-use statement for glass production to support valuation; bulk shipments require proper ventilation to prevent caking
• Avoid classifying with glass frit additives which fall under 3207
Related Products under HTS 2833.11.10.00
Salt Cake (Sodium Sulfate Anhydrous)
Salt cake is the commercial name for disodium sulfate (Na2SO4) in its anhydrous form, produced as a by-product in chemical manufacturing processes like hydrochloric acid production. It falls under HTS 2833.11.10.00 as it is specifically defined as 'salt cake,' a crude or technical grade of sodium sulfate distinct from refined versions.
Technical Grade Salt Cake for Detergent Production
Salt cake serving as filler and processing aid in powdered laundry detergent formulations, providing bulk and flow properties. HTS 2833.11.10.00 applies as it's the designated subheading for this commercial form of disodium sulfate.
Salt Cake By-Product from HCl Production
Crystalline salt cake generated as waste from the Mannheim process for hydrochloric acid manufacture from sodium chloride. Specifically provided for under HTS 2833.11.10.00 as 'salt cake,' distinguishing it from purified sodium sulfate.
Kraft Pulping Grade Salt Cake
Technical sodium sulfate (salt cake) used in sulfate pulp mills to regenerate cooking liquor during kraft paper production. Falls under HTS 2833.11.10.00 as the standard 'salt cake' specification for this essential pulping chemical.
Glass Batch Salt Cake Additive
Granular salt cake incorporated into glass batch compositions as a fining agent and viscosity modifier. HTS 2833.11.10.00 classification applies to this technical grade disodium sulfate known commercially as salt cake.
Textile Dyeing Salt Cake
Coarse salt cake used as mordant and leveling agent in reactive dyeing of cotton and cellulosic fibers. Provided for under HTS 2833.11.10.00 as the designated subheading for commercial salt cake.