2835
4-digit headingPhosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined
This is a 4-digit heading — a category, not a filing code. Pick the more specific code beneath it that best matches your goods; only a 10-digit statistical code can be used on a customs entry.
Duty rates
No rate is published at this level — check the specific 10-digit statistical code beneath it.
| Rate | Value and what it means |
|---|---|
| General rate (Column 1) | See 10-digit codeColumn 1 general Applies to most trading partners — the standard "normal trade relations" rate. |
| Special rate (Column 1) | —Trade programs The country letters in parentheses are free trade agreement and preference programs. If your goods qualify under one of them, that rate replaces the general rate. |
| Column 2 rate | —Non-NTR Reserved for the small group of countries that do not have normal trade relations with the US (currently Cuba, North Korea, Russia and Belarus). Almost no importer uses this column — if you are shipping from anywhere else, ignore it. |
| Unit of quantity | — How CBP expects the quantity to be reported on the entry summary. |
Codes within Phosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined
14 more specific lines fall under 2835.
- 2835.10.00.00Phosphinates (hypophosphites) and phosphonates (phosphites)10-digit statistical codePhosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined:3.1%
- 2835.22.00.00Of mono- or disodium10-digit statistical codePhosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined: > Phosphates:1.4%
- 2835.24.00.00Of potassium10-digit statistical codePhosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined: > Phosphates:3.1%
- 2835.25.00.00Calcium hydrogenorthophosphate ("Dicalcium phosphate")10-digit statistical codePhosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined: > Phosphates:Free
- 2835.26.00.00Other phosphates of calcium10-digit statistical codePhosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined: > Phosphates:Free
- 2835.29Other6-digit headingPhosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined: > Phosphates:
- 2835.29.10.00Of aluminum10-digit statistical codePhosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined: > Phosphates: > Other:Free
- 2835.29.20.00Of triammonium10-digit statistical codePhosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined: > Phosphates: > Other:1.5%
- 2835.29.30.00Of trisodium10-digit statistical codePhosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined: > Phosphates: > Other:2.2%
- 2835.29.51.00Other10-digit statistical codePhosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined: > Phosphates: > Other:4.1%
- 2835.31.00.00Sodium triphosphate (Sodium tripolyphosphate)10-digit statistical codePhosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined: > Polyphosphates:1.4%
- 2835.39Other6-digit headingPhosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined: > Polyphosphates:
- 2835.39.10.00Of potassium10-digit statistical codePhosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined: > Polyphosphates: > Other:3.1%
- 2835.39.50.00Other10-digit statistical codePhosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined: > Polyphosphates: > Other:3.7%
Chapter 28: Inorganic Chemicals; Compounds of Precious Metals and Rare-Earths
Browse every code in this chapter to compare neighbouring classifications.
View Chapter 28Source: USITC Harmonized Tariff Schedule, 2026 Basic Edition, Revision 16. Rate text is reproduced verbatim from the official export; category paths and duty estimates are derived.
Data loaded August 18, 2026.Check this chapter on hts.usitc.govReport an error with this codeHow this data is built