2929.90.50.30
N-(Dialkyl (≤C10, incl. cycloalkyl) amino))alkylidene (H or ≤C10, incl. cycloalkyl) phosphonamidic fluorides and corresponding alkylated or protonated salts
Classification path
- Compounds with other nitrogen function
- Other
- Other
- Other
- N-(Dialkyl (≤C10, incl. cycloalkyl) amino))alkylidene (H or ≤C10, incl. cycloalkyl) phosphonamidic fluorides and corresponding alkylated or protonated salts
Rates of duty
- General (MFN)
- 6.5%
- Column 2Cuba, North Korea, Russia, Belarus
- 30.5%
- Unit of quantity
- kg
Trade agreement rates
Related lines in heading 2929
- 2929.10.10.00Toluenediisocyanates (unmixed)6.5%
- 2929.10.15.00Mixtures of 2,4- and 2,6-toluenediisocyanates6.5%
- 2929.10.20.00Bitolylene diisocyanate (TODI);o-Isocyanic acid, o-tolyl ester; and Xylene diisocyanate5.8%
- 2929.10.27.00N-Butylisocyanate; Cyclohexyl isocyanate; 1-Isocyanato-3-(trifluoromethyl) benzene; 1,5-Naphthalene diisocyanate; and Octadecyl isocyanateFree
- 2929.10.30.00Compounds with other nitrogen function / Isocyanates / 3,4-Dichlorophenylisocyanate6.5%
- 2929.10.35.001,6-Hexamethylene diisocyanate6.5%
- 2929.10.55.00Products described in additional U.S. note 3 to section VI6.5%
- 2929.10.80.10Methylenedi-p-phenylene isocyanate (MDI)6.5%
- 2929.10.80.90Compounds with other nitrogen function / Isocyanates / Other6.5%
- 2929.90.05.002,2'-Bis(4-cyanatophenyl)-1,1,1,3,3,3-hexafluoro- propane; 2,2-Bis((4-cyanatophenyl) propane; 1,1-Ethylidenebis (phenyl-4-cyanate); 4,4'-Methylene bis(2,6-dimethylphenylcyanate); and 1,3-Phenylenebis (1-methylethylidenebis) cyanic acid, 1,4-phenylene esterFree
- 2929.90.15.00Products described in additional U.S. note 3 to section VI6.5%
- 2929.90.20.00Compounds with other nitrogen function / Aromatic / Other6.5%
About heading 2929
Compounds with other nitrogen function
Heading 2929 covers compounds with other nitrogen function, mainly isocyanates and cyanate esters. It splits into a subheading for isocyanates (2929.10), broken out by specific named chemicals such as TDI, MDI and HDI, and a residual subheading (2929.90) for other nitrogen-function compounds, split by aromatic versus other and by named phosphoramidic and phosphoramidate chemicals. Most lines carry a 6.5% general (MFN) rate, with a few at 5.8% or free.
Full guide to heading 2929Products in this heading
- Toluene diisocyanate (TDI) used to make flexible polyurethane foam
- Mixtures of 2,4- and 2,6-toluenediisocyanate sold as an 80/20 blend
- Methylenedi-p-phenylene isocyanate (MDI) for rigid foam and insulation panels
- 1,6-Hexamethylene diisocyanate (HDI) for automotive and industrial coatings
- Polymeric MDI mixtures for binders and adhesives
- Cyclohexyl isocyanate, a specialty isocyanate intermediate
- Xylene diisocyanate for specialty polymers
- Cyanate ester resins such as 2,2-bis(4-cyanatophenyl)propane for circuit laminates
Frequently asked questions
What is the HTS code for toluene diisocyanate?
Unmixed toluenediisocyanate is 2929.10.10.00 at a general (MFN) rate of 6.5%. A mixture of the 2,4- and 2,6- isomers is 2929.10.15.00, also 6.5%.
What is the duty on MDI?
Methylenedi-p-phenylene isocyanate (MDI) is classified under 2929.10.80.10 with a general (MFN) rate of 6.5%.
How do I classify hexamethylene diisocyanate?
1,6-Hexamethylene diisocyanate has its own line, 2929.10.35.00, and pays a general (MFN) rate of 6.5%.
Source: USITC Harmonized Tariff Schedule, retrieved October 21, 2026.