Sodium Bisulfate Monohydrate
Sodium bisulfate monohydrate (NaHSO4·H2O), also called niter cake, is an acid salt used for pH adjustment in pools, cleaning agents, and food processing. As a sodium sulfate derivative, it classifies under HTS 2833.19.00.00 for other sodium sulfates.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If classified as dithionite/sulfoxylate stabilizers
Certain stabilized sulfates fall under Chapter 28 note exclusions.
If insecticide/disinfectant preparation
Formulated pesticide products with bisulfate go to Chapter 38.
If other disodium sulfate salts
Different sodium sulfate salts may fall under 'other sulfates' subheadings.
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Import Tips & Compliance
• Obtain FDA prior notice if for food contact uses
• Include assay certificates showing bisulfate content >90%
• Avoid bulk packaging issues by using UN-approved containers for corrosive nature
Related Products under HTS 2833.19.00.00
Sodium Sulfate Anhydrous (Salt Cake)
Sodium sulfate anhydrous, also known as salt cake, is a white crystalline powder used in the glass, paper, and detergent industries as a filler and fluxing agent. It falls under HTS 2833.19.00.00 as 'other' sodium sulfates, distinct from Glauber's salt (sodium sulfate decahydrate) classified in 2833.11.50.00.
Sodium Sulfate Decahydrate Technical Grade
Technical grade sodium sulfate decahydrate is a hydrated form used in heat packs and as a laboratory reagent, but classified here as 'other' when not meeting Glauber's salt criteria for purity or form. It fits HTS 2833.19.00.00 for sodium sulfates excluding the primary decahydrate subheading.
Trisodium Phosphate Dodecahydrate
No—persulfate is 2833.40. Sodium sulfate calcined powder for glass manufacturing, classified as 'other' under HTS 2833.19.00.00.