Technical Grade Triammonium Phosphate
Technical-grade (NH4)3PO4 powder used in industrial flame retardants for textiles and plastics. Falls precisely under HTS 2835.29.20.00 for triammonium phosphates, as per legal definition excluding other ammonium variants. Chemically defined inorganic compound.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If when finishing agents for textiles containing triammonium phosphate
Textile finishing preparations classify under Chapter 38, not pure chemicals of Chapter 28.
If actually a polyphosphate variant like sodium tripolyphosphate
Polyphosphates have dedicated subheading 2835.31; Chapter notes distinguish chain length/structure.
If urea-ammonium phosphate fertilizer formulations
Chapter 31 note exclusions apply to fertilizer products; mixtures with organics shift out of Chapter 28.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Submit molecular analysis confirming triammonium structure; customs may test to distinguish from 2835.22 (diammonium)
• Declare end-use in flame retardants if applicable – may qualify for duty exemptions under certain FTAs
Related Products under HTS 2835.29.20.00
Triammonium Phosphate Lab Grade
High-purity triammonium phosphate for laboratory reagents and analytical chemistry, meeting ACS specifications. Classified under HTS 2835.29.20.00 as a chemically defined phosphate of triammonium per Chapter 28 notes. Excludes organic derivatives or fertilizer blends.
Triammonium Phosphate Anhydrous Powder
Anhydrous (NH4)3PO4 fine powder for pharmaceutical buffering and nutrient media preparation. HTS 2835.29.20.00 applies to this chemically defined triammonium phosphate salt. Excludes hydrated forms if separately specified, but generally covered.
Flame Retardant Triammonium Phosphate
Specialty triammonium phosphate optimized for intumescent flame retardant coatings in construction materials. Strictly HTS 2835.29.20.00 as pure chemically defined triammonium phosphate. Used where char formation is needed upon heating.
Triammonium Phosphate 99% Pure
99% purity triammonium phosphate for water treatment pH adjustment and corrosion inhibition. Classifies under HTS 2835.29.20.00 per Chapter 28 definitions for inorganic ammonium phosphates. Chemically defined compound.
Microencapsulated Triammonium Phosphate
Triammonium phosphate microencapsulated for controlled release in polymer flame retardants. Remains HTS 2835.29.20.00 if chemically defined pure compound; encapsulation doesn't change base classification unless mixture.
Triammonium Phosphate Crystals
Pure triammonium phosphate (NH4)3PO4 in crystalline form, a chemically defined inorganic salt used as a flame retardant and in chemical synthesis. It falls under HTS 2835.29.20.00 as a phosphate of triammonium, distinct from other ammonium phosphates like mono- or diammonium. This subheading covers specifically triammonium salts within the phosphates category of Chapter 28.