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Harmonized Tariff Schedule (2026 HTS Revision 20 (09/28/2026))

Heading	Duty(general)	Article Description	Compare Code
2931.90		Other: Aromatic:	--
2931.90.05.00	Free	Diphenyldichlorosilane; and phenyltrichlorosilane	vs-293190
2931.90.10.00	6.5%	4,4'-Diphenylbisphosphonous acid, di(2',2",4',4"-di-tert-butyl)phenyl ester	vs-2931900500
2931.90.15.00	5.8%	Sodium tetraphenylboron Other:	vs-2931901000
2931.90.22.00	6.5%	Drugs	vs-2931901500
2931.90.26.00	6.5%	Pesticides Other:	vs-2931902200
2931.90.30.00	6.5%	Products described in additional U.S. note 3 to section VI	vs-2931902600
2931.90.60.00	6.5%	Other Other:	vs-2931903000
2931.90.70.00	Free	N,N'-Bis(trimethylsilyl) urea; 3-(Hydroxymethylphosphinyl)-1-propanoic acid, 2-hydroxyethyl ester; and 2-Phosphonobutane-1,2,4-tricarboxylic acid and its salts	vs-2931906000
2931.90.90	3.7%	Other	vs-2931907000
2931.90.90.10	3.7%	Organo-silicon compounds Organo-tin compounds:	vs-29319090
2931.90.90.21	3.7%	Dibutyltin oxide	vs-2931909010
2931.90.90.25	3.7%	Tetrabutyltin	vs-2931909021
2931.90.90.29	3.7%	Other	vs-2931909025
2931.90.90.30	3.7%	2-Chlorovinyldichloroarsine	vs-2931909029
2931.90.90.35	3.7%	Bis(2-chlorovinyl)chloroarsine	vs-2931909030
2931.90.90.40	3.7%	Tris(2-chlorovinyl)arsine	vs-2931909035
2931.90.90.52	3.7%	Other	vs-2931909040
2932		Heterocyclic compounds with oxygen hetero-atom(s) only: Compounds containing an unfused furan ring (whether or not hydrogenated) in the structure:	vs-2931909052
2932.11.00.00	3.7%	Tetrahydrofuran	vs-2932