Flame Retardant Triammonium Phosphate
Flame retardant triammonium phosphate is a chemically defined (NH4)3PO4 compound optimized for intumescent coatings. As a phosphate of ammonium, it falls under the 'Other' nitrates item, which covers phosphates not specifically named elsewhere.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the product is a double or complex salt
Chapter 28 Note 5 places double or complex salts in heading 28.42.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Ensure the product is pure triammonium phosphate without added flame retardant synergists
• Provide a certificate of analysis showing chemical purity
• Declare the end-use to confirm it is not a preparation under Chapter 38
Related Products under Tariff item 2835.29.00
Aluminum Hydrogen Phosphate
Aluminum hydrogen phosphate (Al(H2PO4)3) is an acidic phosphate salt used as a reactive binder in acid-cured refractories and corrosion inhibitors. It is a separate chemically defined compound of aluminum and phosphorus, falling under the 'Other' nitrates tariff item as a phosphate not elsewhere specified.
Aluminum Orthophosphate Powder
Aluminum orthophosphate powder (AlPO4) is a thermally stable, chemically defined compound used in ceramic glazes, dental cements, and optical coatings. As a phosphate of aluminum, it is classified under the 'Other' nitrates item, which covers phosphates not specifically named elsewhere.
Aluminum Phosphate Gel
Aluminum phosphate gel (AlPO4·2H2O) is a colloidal suspension of a chemically defined aluminum phosphate, used as a binder in refractory ceramics and catalyst supports. The gel form is a normal method of putting up this product for transport, and the compound itself falls under the 'Other' nitrates item.
Anhydrous Trisodium Phosphate Powder
Anhydrous trisodium phosphate is the water-free form of Na3PO4, a strong base used in metal pretreatment and food processing as an acidity regulator. It is a chemically defined phosphate of sodium, falling under the 'Other' nitrates item.
Food-Grade Aluminum Phosphate
Food-grade aluminum phosphate (E541) is a purified, chemically defined aluminum phosphate used as an emulsifier, stabilizer, and anti-caking agent in processed foods. It is a phosphate salt of aluminum, classifiable under the 'Other' nitrates item as a phosphate not specifically named.
Microencapsulated Triammonium Phosphate
Microencapsulated triammonium phosphate is a chemically defined (NH4)3PO4 compound encapsulated for controlled release in polymer flame retardants. The encapsulation does not alter the chemical identity, so it remains classifiable under the 'Other' nitrates item as a phosphate.