Tetrasodium Pyrophosphate from China
Tetrasodium pyrophosphate (TSPP, Na4P2O7) functions as a dispersant in ceramics and detergent builder. Though 'tetra', classified as disodium polyphosphate derivative under HTS 2835.22.00.00. Anhydrous powder for industrial applications.
Duty Rate — China → United States
38.9%
Rate breakdown
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)
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• TSCA pre-notification for first import; declare as pure >94% to avoid 3824
• Detergent formulations containing >20% TSPP risk heading 3402 classification
• Solubility specs critical—insoluble impurities trigger quality holds