Phosphates (Other, NESOI)

Classification depends on the specific cation paired with the phosphate anion. Aluminum phosphates (AlPO₄ and related salts) go to 2835291000; triammonium phosphate to 2835292000; trisodium phosphate (Na₃PO₄) to 2835293000. Phosphate salts not specifically described by those lines fall to the residual NESOI provisions (2835295100 or 2835299050). Importers should provide the chemical name, CAS number, and formula on entry documentation and consult a licensed customs broker for borderline cases.

Yes. Trisodium phosphate used as a food additive or processing aid is subject to FDA oversight, including review of purity and labeling. Industrial-grade material used as a cleaner or surface treatment agent is not subject to FDA food-additive requirements but may face other regulatory considerations depending on end use. The HTS classification is the same regardless of grade, so the intended use declaration and accompanying documentation are critical at entry.