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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If organic phosphate esters misclassified
Chapter 29 covers organic phosphorus compounds; Chapter 28 limited to inorganic per notes.
If ammonium nitrate-phosphate mixtures
Complex inorganic salts may fall under 2834 if not purely triammonium phosphate.
If in prepared culture media sets
Biotech preparations for retail sale classify as mixtures under 3824 per exclusions.
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Import Tips & Compliance
• Provide GMP certification for pharma-grade imports; FDA registration may be required alongside CBP entry
• Hygroscopic – use anti-caking declarations to prevent weight disputes from moisture absorption
• Ensure no heavy metal contaminants per USP standards to avoid toxic substance scrutiny
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.
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.
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.