Potassium Graham's Salt (Metaphosphate) from China
Potassium Graham's salt, a vitreous potassium metaphosphate, used as a water softener in dishwashing detergents. Falls under HTS 2835.39.10.00 as other polyphosphates of potassium. Vitreous form provides long-chain phosphate structure.
Duty Rate — China → United States
40.6%
Rate breakdown
9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 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
• Historical name 'Graham's salt' requires chemical synonym on invoice
• Test for vitreous vs soluble form affecting end-use declaration
• Monitor EU phosphate discharge regulations impacting market access