Diphosphorus pentaoxide; phosphoric acid;polyphosphoric acids, whether or not chemically defined
HTS heading 2809 · chapter 28 · 1 tariff lines · 0 subheadings
Rates below are the general column — the rate for goods from countries with normal trade relations. Compare every line in the heading at once, then open a line for the duty calculator.
Tariff lines in heading 2809
| HTS code | Description | General | Special | Col. 2 |
|---|---|---|---|---|
| 2809.20.00 | Phosphoric acid and polyphosphoric acids | Free | — | Free |
Pricing the duty
Open the tariff line that matches your goods — each line page has a calculator that applies the exact rate, including specific duties charged per kilogram.
Open the duty calculatorAbout heading 2809
Heading 2809 covers diphosphorus pentaoxide; phosphoric acid;polyphosphoric acids, whether or not chemically defined. It splits into 0 six-digit subheadings and 1 US tariff lines, 1 of which are duty-free under the general rate.
Headings are the four-digit level of the Harmonized System — the layer that is identical across all 160-plus countries that use it. The six-digit subheading is also international; the last two digits of each code here are US-specific and do not carry across to another country's tariff.