Analysis
HTS 2809.20.00 covers phosphoric acid and polyphosphoric acids under heading 2809 (diphosphorus pentaoxide; phosphoric acid;polyphosphoric acids, whether or not chemically…). US Customs collects import statistics for it under 4 ten-digit suffixes, reported in metric tons.
Goods classified here enter the United States duty-free at the general (normal trade relations) rate, as do about 29% of the 274 tariff lines in chapter 28. Chapter 99 measures such as Section 301 or 232 can still apply on top, depending on where the goods come from.
The other line in the same group is 2809.10.00 (diphosphorus pentaoxide, duty-free).
Census statistics map these goods to NAICS 325312 (Phosphatic Fertilizer Manufacturing), an industry of 79 US establishments employing 6,248 people. That is the industry code a US manufacturer of the same product would normally use.
The ten-digit suffixes separate containing less than 65 percent… and polyphosphoric acids. The duty is the same across them; the suffix matters for statistics, licensing and some quotas, and an entry needs all ten digits.
The general rate of Free has not changed in any edition of the schedule since Jan 2023.
Statistical suffixes
Neighbouring lines
| Line | Description | General rate |
|---|---|---|
| 2809.10.00 | Diphosphorus pentaoxide | Free |