Potassium Graham's Salt (Metaphosphate) from Canada
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 — Canada → United States
13.1%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
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