Analysis
HTS 2919.90.15 covers triphenyl phosphate under heading 2919 (phosphoric esters and their salts, including lactophosphates; their halogenated…).
Neighbouring lines carry rates from 3.7% to 6.5%, so the exact line matters. The widest gap is with 2919.90.30 (aromatic: other), at 6.5%: a product that belongs there but is entered here, or the reverse, changes the duty by 6.5 percentage points.
Goods classified here enter the United States duty-free at the general (normal trade relations) rate, as do about 26% of the 1050 tariff lines in chapter 29. Free here means free of the base duty only: origin-specific Chapter 99 duties such as Section 301 can still be owed.
The other lines in the same group are 2919.90.25 (plasticizers: other, 6.5%), 2919.90.30 (aromatic: other, 6.5%) and 2919.90.50 (other: other, 3.7%).
Census statistics map these goods to NAICS 325199 (All Other Basic Organic Chemical Manufacturing), an industry of 894 US establishments employing 77,304 people. That is the industry code a US manufacturer of the same product would normally use.
Every edition we compared, from Jan 2023 to Oct 2026 (Rev. 22), shows the same general rate of Free.
Neighbouring lines
| Line | Description | General rate |
|---|---|---|
| 2919.90.25 | Plasticizers: other | 6.5% |
| 2919.90.30 | Aromatic: other | 6.5% |
| 2919.90.50 | Other: other | 3.7% |