Other
Phosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined: > Phosphates: > Other: > Other
Duty Rate (from China)
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
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)
Products classified under HTS 2835.29.51.00
Sodium Tripolyphosphate (STPP)
Sodium tripolyphosphate is a polyphosphate salt used as a builder in detergents and for water softening in food processing. It falls under HTS 2835.29.51.00 as a polyphosphate, chemically defined inorganic compound of phosphorus. This classification applies to its anhydrous or hydrated forms used industrially.
Tetrasodium Pyrophosphate
Tetrasodium pyrophosphate is an inorganic polyphosphate used as a buffering agent, emulsifier in foods, and dispersant in industrial cleaners. Classified under HTS 2835.29.51.00 as 'other' polyphosphates, it meets Chapter 28 definitions for chemically defined phosphorus compounds. Commonly supplied as white crystalline powder.
Disodium Phosphate Anhydrous
Disodium phosphate (Na2HPO4) is a sodium salt of phosphoric acid used in dairy processing, pharmaceuticals, and as a pH buffer. It qualifies under HTS 2835.29.51.00 as 'other' phosphates, being a chemically defined inorganic compound per Chapter 28 notes. Available in granular or powder form.
Trisodium Phosphate Dodecahydrate
Trisodium phosphate dodecahydrate (Na3PO4·12H2O) serves as a cleaning agent, degreaser, and pH regulator in industrial and dairy applications. Falls under HTS 2835.29.51.00 as other phosphates, chemically defined per Chapter 28. The hydrated crystalline form is standard for commercial use.
Potassium Phosphate Monobasic
Potassium dihydrogen phosphate (KH2PO4) is used in fertilizers, pharmaceuticals, and as a buffering agent in lab reagents. Classified in HTS 2835.29.51.00 as other phosphates, it's a chemically defined inorganic potassium salt. High purity grades exceed 99%.
Sodium Hexametaphosphate
Sodium hexametaphosphate (SHMP) is a polyphosphate sequestering agent used in water treatment, ceramics, and food processing. It fits HTS 2835.29.51.00 as other polyphosphates, chemically defined under Chapter 28 exclusions. Glassy or powdered forms are typical.
Diammonium Phosphate
Diammonium phosphate ((NH4)2HPO4) functions as a fire retardant, yeast nutrient in baking, and pH buffer. Under HTS 2835.29.51.00 as other phosphates, it's chemically defined per Chapter 28 for ammonium salts. White crystalline powder form.
Magnesium Phosphate Tribasic
Magnesium phosphate tribasic (Mg3(PO4)2) is used as a dietary supplement, antacid, and in ceramics production. Classified HTS 2835.29.51.00 as other phosphates, meeting inorganic compound criteria. Typically octahydrate form.
Zinc Phosphate Dihydrate
Zinc phosphate dihydrate (Zn3(PO4)2·2H2O) serves as a corrosion inhibitor in primers and dental cements. HTS 2835.29.51.00 covers it as other phosphates, chemically defined zinc salt. Fine white powder for coatings.
Sodium Acid Pyrophosphate
Sodium acid pyrophosphate (SAPP) acts as a leavening agent in baking powders and rapid-setting cement additive. Under HTS 2835.29.51.00 as polyphosphate, it's chemically defined for food and construction uses. Available in various P2O5 grades.