Duty Rate (from China)
Except as provided in headings 9903.88.33, 9903.88.34, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(g) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(g)
Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Subheadings
Products classified under HTS 2931.90.90
Tetraethyl Lead (TEL)
Tetraethyl lead is an organo-inorganic compound where lead atoms are directly linked to carbon in ethyl groups, used historically as an antiknock additive in gasoline. It falls under HTS 2931.90.90 as 'other organo-inorganic compounds' since it contains a metal (lead) directly bonded to carbon and doesn't fit specific subheadings. The chapter notes confirm classification in heading 2931 for such metal-carbon bonded compounds.
Trimethyl Bismuth
Trimethyl bismuth (Bi(CH3)3) is a volatile organobismuth compound with bismuth-carbon bonds, used in MOCVD semiconductor manufacturing. Classified under 2931.90.90 as other organo-inorganic compounds per chapter notes defining heading 2931 for metal-carbon linkages. Excluded from organosulfur (2930) or heterocyclic categories.
Triphenyl Antimony
Triphenyl antimony (SbPh3) features antimony-carbon bonds characteristic of organo-inorganic compounds in heading 2931. Used as a catalyst in PET resin production and flame retardant intermediate. Falls in 2931.90.90 as it doesn't match specific organo-inorganic subheadings.
Methylcyclopentadienyl Manganese Tricarbonyl
MCDC (methylcyclopentadienyl manganese tricarbonyl) is an organomanganese fuel additive with Mn-C bonds, qualifying as organo-inorganic under 2931.90.90. Used as MMT gasoline antiknock agent; chapter notes exclude it from hydrocarbon (Ch27) or inorganic metal (Ch28) classifications.
Tributyl Tin Chloride
Tributyltin chloride (Bu3SnCl) contains tin-carbon bonds defining organo-inorganic classification under heading 2931. Used as biocide intermediate and PVC stabilizer precursor. 2931.90.90 as other, since not specifically enumerated; chapter notes exclude halogenated organics without metal-carbon bonds.
Cyclopentadienyl Iron Dicarbonyl Dimer
This ferrocene derivative [(CpFe(CO)2)2] features iron-carbon bonds in cyclopentadienyl rings, qualifying as organo-inorganic under 2931.90.90. Used in specialty polymer catalysis; chapter note III(C) prioritizes latest numerical heading.
Dimethylcadmium
Dimethylcadmium ((CH3)2Cd) is a pyrophoric organocadmium reagent with Cd-C bonds, used in semiconductor synthesis. Classified 2931.90.90 per chapter notes defining organo-inorganic metal-carbon compounds; excluded from Ch28 inorganics.
Triethylphosphine Gold(I) Chloride
This gold(I) complex (AuCl(PEt3)) contains gold-phosphorus-carbon chain linkages qualifying as organo-inorganic under 2931.90.90. Used in homogeneous catalysis and antirheumatic drugs; chapter notes prioritize organometallic classification.
Bis(cyclopentadienyl)zirconium Dichloride
Zirconocene dichloride (Cp2ZrCl2) is a metallocene polymerization catalyst with Zr-C bonds, classified 2931.90.90 as other organo-inorganic compounds. Chapter note III(A) confirms classification with organic component in latest numerical heading.
Trimethylindium
Trimethylindium (InMe3) is an organoindium precursor for III-V semiconductors with In-C bonds defining 2931.90.90 classification. Pyrophoric liquid excluded from inorganic indium (Ch28) by chapter organo-inorganic notes.
Diethylzinc
Diethylzinc (ZnEt2) features zinc-carbon bonds characteristic of organo-inorganic compounds under 2931.90.90. Essential reagent for asymmetric synthesis and semiconductor production; pyrophoric nature requires specialized handling.
Triisobutylaluminum
Triisobutylaluminum ((iBu)3Al) is a pyrophoric organoaluminum cocatalyst for Ziegler-Natta polymerization with Al-C bonds qualifying for 2931.90.90. Excluded from inorganic aluminum (Ch28) by chapter organo-inorganic definitions.
Methyllithium (15% in Diethyl Ether)
Methyllithium solution contains lithium-carbon bonds defining organolithium classification under 2931.90.90. Used as strong base/non-nucleophile in pharma synthesis; chapter note V(D) classifies metal alcoholates similarly.
Vinyltriethoxysilane
Although silicones often classified elsewhere, vinyltriethoxysilane with Si-C vinyl bond qualifies as organo-inorganic under 2931.90.90 when imported as pure compound. Silane coupling agent for composites; chapter notes distinguish from polymers.
Allyltrimethylsilane
Allyltrimethylsilane (CH2=CHCH2SiMe3) contains silicon-carbon bonds characteristic of organo-inorganic compounds in 2931.90.90. Peterson olefination reagent; distinguished from hydrocarbons by heteroatom-carbon linkage per chapter notes.