Sodium Sulfate Anhydrous (Salt Cake) from China
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.
Duty Rate — China → United States
35%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Import Tips
• Verify purity and anhydrous state via lab analysis to avoid misclassification as decahydrate under 2833.11
• Include Material Safety Data Sheets (MSDS) and certificates of analysis for customs clearance
• Check for hazardous material shipping requirements if in bulk quantities