HTS tariff line · chapter 29
2929.10.27
N-Butylisocyanate; Cyclohexyl isocyanate; 1-Isocyanato-3-(trifluoromethyl) benzene; 1,5-Naphthalene diisocyanate; and Octadecyl isocyanate
Analysis
HTS 2929.10.27 covers n-Butylisocyanate; Cyclohexyl isocyanate; 1-Isocyanato-3-(trifluoromethyl) benzene; 1,5-Naphthalene diisocyanate; and Octadecyl isocyanate under heading 2929 (compounds with other nitrogen function).
Within this group the rate runs from 5.8% to 6.5%. Compared with 2929.10.80 (other: other), which pays 6.5%, a misclassification either way moves the duty by 6.5 percentage points.
The normal trade relations rate here is zero, shared by about 26% of the 1050 tariff lines in chapter 29, a useful check when a neighbouring dutiable line is a candidate. Free here means free of the base duty only: origin-specific Chapter 99 duties such as Section 301 can still be owed.
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 concordance is how imports of this line are compared with US output.
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 |
|---|---|---|
| 2929.10.10 | Toluenediisocyanates (unmixed) | 6.5% |
| 2929.10.15 | Mixtures of 2,4- and 2,6-toluenediisocyanates | 6.5% |
| 2929.10.20 | Bitolylene diisocyanate (TODI);o-Isocyanic acid, o-tolyl ester; and Xylene diisocyanate | 5.8% |
| 2929.10.30 | 3,4-Dichlorophenylisocyanate | 6.5% |
| 2929.10.35 | 1,6-Hexamethylene diisocyanate | 6.5% |
| 2929.10.55 | Products described in additional U.S. note 3 to section VI | 6.5% |
| 2929.10.80 | Other: other | 6.5% |