2835.24.00.00
Phosphates / Of potassium
Classification path
- Phosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined
- Phosphates
- Of potassium
Rates of duty
- General (MFN)
- 3.1%
- Column 2Cuba, North Korea, Russia, Belarus
- 25%
- Unit of quantity
- kg
Trade agreement rates
Related lines in heading 2835
- 2835.10.00.00Phosphinates (hypophosphites) and phosphonates (phosphites)3.1%
- 2835.22.00.00Phosphates / Of mono- or disodium1.4%
- 2835.25.00.00Calcium hydrogenorthophosphate ("Dicalcium phosphate")Free
- 2835.26.00.00Phosphates / Other phosphates of calciumFree
- 2835.29.10.00Phosphates / Of aluminumFree
- 2835.29.20.00Phosphates / Of triammonium1.5%
- 2835.29.30.00Phosphates / Of trisodium2.2%
- 2835.29.51.00Phosphates / Other4.1%
- 2835.31.00.00Sodium triphosphate (Sodium tripolyphosphate)1.4%
- 2835.39.10.00Polyphosphates / Of potassium3.1%
- 2835.39.50.00Polyphosphates / Other3.7%
About heading 2835
Phosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined
Heading 2835 covers phosphinates (hypophosphites), phosphonates (phosphites), phosphates, and polyphosphates, whether or not chemically defined. It is split first between phosphinates/phosphonates and phosphates, then within phosphates by cation and type, and within polyphosphates between sodium triphosphate and other polyphosphates.
Full guide to heading 2835Products in this heading
- Sodium tripolyphosphate (STPP)
- Trisodium phosphate (TSP)
- Dicalcium phosphate
- Monosodium phosphate
- Potassium phosphate
- Aluminum phosphate
- Triammonium phosphate
- Sodium hexametaphosphate
Frequently asked questions
What is the HTS code for sodium tripolyphosphate?
Sodium tripolyphosphate (sodium triphosphate) is classified under 2835.31.00.00. Its general (MFN) rate is 1.4%.
What is the duty on dicalcium phosphate?
Dicalcium phosphate (calcium hydrogenorthophosphate) is classified under 2835.25.00.00. Its general (MFN) rate is Free.
How do I classify potassium phosphate?
A simple phosphate of potassium is classified under 2835.24.00.00, with a general (MFN) rate of 3.1%. A polyphosphate of potassium is classified under 2835.39.10.00, with a general (MFN) rate of 3.1%.
Source: USITC Harmonized Tariff Schedule, retrieved October 21, 2026.