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.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If sulfate-zinc mixed salt
Zinc sulfates classify under 2833; pure phosphates stay 2835.
If dental cement preparations
Pharmaceutical dental products classify in Chapter 30.
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Import Tips & Compliance
• Coatings industry imports need TSCA declarations for new chemical review
• Dental uses require ISO 13485 quality certs from supplier
• Test for heavy metal leaching to meet REACH/EPA limits
Related Products 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.