Heading 2918: Carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulfonated, nitrated or nitrosated derivatives

In chapter 29, Organic chemicals. 56 rate lines, laid out as HTS Revision 20 (2026) prints them.

HTS number	Description	Units	General	Special	Column 2
2918	Carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulfonated, nitrated or nitrosated derivatives:
	Carboxylic acids with alcohol function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives:
2918.11	Lactic acid, its salts and esters:
2918.11.10.00	Lactic acid	kg	5.1%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	35%
2918.11.51.00	Other	kg	3.4%	Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	25%
2918.12.00.00	Tartaric acid	kg	Free		17%
2918.13	Salts and esters of tartaric acid:
2918.13.10.00	Potassium antimony tartrate (Tartar emetic)	kg	Free		4%
2918.13.20.00	Potassium bitartrate (Cream of tartar)	kg	Free		11%
2918.13.30.00	Potassium sodium tartrate (Rochelle salts)	kg	Free		11.5%
2918.13.50.00	Other	kg	4.4%	Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	25%
2918.14.00.00	Citric acid	kg	6%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	39.5%
2918.15	Salts and esters of citric acid:
2918.15.10.00	Sodium citrate	kg	6.5%	Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	42%
2918.15.50.00	Other	kg	3.7%	Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	25%
2918.16	Gluconic acid, its salts and esters:
2918.16.10.00	Gluconic acid	kg	6%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	25%
2918.16.50	Other		3.7%	Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	25%
2918.16.50.10	Sodium gluconate	kg
2918.16.50.20	Calcium gluconate	kg
2918.16.50.90	Other	kg
2918.17.00.01	2,2-Diphenyl-2-hydroxyacetic acid (benzilic acid)	kg	5.8%	Free (A+,AU,BH,CL,CO,D, E,IL,JO, KR,MA,OM,P, PA,PE,S,SG)	15.4¢/kg + 40%
2918.18.00.00	Chlorobenzilate (ISO)	kg	6.5%	Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,L,MA,OM,P, PA,PE,S,SG)	15.4¢/kg + 57%
2918.19	Other:
	Aromatic:
2918.19.11.00	Benzilic acid, methyl ester	kg	5.8%	Free (A+,AU,BH,CL,CO,D, E,IL,JO, KR,MA,OM,P, PA,PE,S,SG)	15.4¢/kg + 40%
	Phenylglycolic acid (Mandelic acid), its salts and esters:
2918.19.12.00	Mandelic acid	kg	Free		15.4¢/kg + 67.5%
2918.19.15.00	Other	kg	6.5%	Free (A+,AU,BH,CL,CO,D, E,IL,JO, K,KR,MA,OM,P, PA,PE,S,SG)	15.4¢/kg + 67.5%
	Other:
2918.19.20.00	Products described in additional U.S. note 3 to section VI	kg	6.5%	Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,L,MA,OM,P, PA,PE,S,SG)	15.4¢/kg + 57%
2918.19.31.00	Other	kg	6.5%	Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,L,MA,OM,P, PA,PE,S,SG)	15.4¢/kg + 57%
	Other:
2918.19.60.00	Malic acid	kg	4%	Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	25%
2918.19.90.00	Other	kg	4%	Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,MA,OM,P, PA,PE,S,SG)	25%
	Carboxylic acids with phenol function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives:
2918.21	Salicylic acid and its salts:
2918.21.10.00	Suitable for medicinal use	kg	6.5%	Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 72%
2918.21.50.00	Other	kg	6.5%	Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 57%
2918.22	O-Acetylsalicylic acid, its salts and esters:
2918.22.10.00	O-Acetylsalicylic acid (Aspirin)	kg	6.5%	Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 82%
2918.22.50.00	Salts and esters of O-acetylsalicylic acid	kg	6.5%	Free (A*,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 47.5%
2918.23	Other esters of salicylic acid and their salts:
2918.23.10.00	Salol (Phenyl salicylate) suitable for medicinal use	kg	6.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 45%
	Other:
2918.23.20.00	Odoriferous or flavoring compounds	kg	6.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 58%
	Other:
2918.23.30.00	Products described in additional U.S. note 3 to section VI	kg	6.5%	Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,MA,OM,P, PA,PE,S,SG)	15.4¢/kg + 57%
2918.23.50.00	Other	kg	6.5%	Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,MA,OM,P, PA,PE,S,SG)	15.4¢/kg + 57%
2918.29	Other:
2918.29.04.00	2,3-Cresotic acid; 2-Hydroxybenzoic acid, calcium salt; 1-Hydroxy-2-naphthoic acid; 2-Hydroxy-1-naphthoic acid; 1-Hydroxy-2-naphthoic acid, phenyl ester;α-Resorcylic acid;γ-Resorcylic acid; and 5-Sulfosalicylic acid	kg	5.8%	Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,L,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 40%
2918.29.06.00	1,6-Hexanediol bis(3,5-dibutyl-4-hydroxyphenyl)propionate)	kg	5.8%	Free (A+,AU,BH,CL,CO,D,E, IL,JO,KR,MA,OM,P, PA,PE,S,SG)	15.4¢/kg + 40%
2918.29.08.00	m-Hydroxybenzoic acid	kg	Free		15.4¢/kg + 40%
2918.29.20.00	Gentisic acid; and Hydroxycinnamic acid and its salts	kg	6.5%	Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,MA,OM,P, PA,PE,S,SG)	15.4¢/kg + 48.5%
2918.29.22.00	p-Hydroxybenzoic acid	kg	6.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 48.5%
2918.29.25.00	3-Hydroxy-2-naphthoic acid	kg	6.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,L,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 57%
2918.29.30.00	Gallic acid	kg	1%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	2%
2918.29.39.00	4,4-Bis(4-hydroxyphenyl) pentanoic acid; and 3,5,6-Trichlorosalicylic acid	kg	Free		15.4¢/kg + 57%
	Other:
2918.29.65.00	Products described in additional U.S. note 3 to section VI	kg	6.5%	Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,L,MA,OM,P, PA,PE,S,SG)	15.4¢/kg + 57%
2918.29.75.00	Other	kg	6.5%	Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,L,MA,OM,P, PA,PE,S,SG)	15.4¢/kg + 57%
2918.30	Carboxylic acids with aldehyde or ketone function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives:
	Aromatic:
2918.30.10.00	1-Formylphenylacetic acid, methyl ester	kg	5.8%	Free (A+,AU,BH,CL,CO,D, E,IL,JO, KR,MA,OM,P, PA,PE,S,SG)	15.4¢/kg + 40%
2918.30.15.00	2-Chloro-4,5-difluoro-ß-oxobenzenepropanoic acid, ethyl ester; and Ethyl 2-keto-4-phenylbutanoate	kg	Free		15.4¢/kg + 57%
	Other:
2918.30.25	Products described in additional U.S. note 3 to section VI		6.5%	Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,MA,OM,P, PA,PE,S,SG)	15.4¢/kg + 57%
2918.30.25.10	Methyl 3-oxo-2-phenylbutanoate (methyl alpha-phenylacetoacetate, MAPA)	kg
2918.30.25.50	Other	kg
2918.30.30.00	Other	kg	6.5%	Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,MA,OM,P, PA,PE,S,SG)	15.4¢/kg + 57%
	Other:
2918.30.70.00	Dimethyl acetyl succinate; Oxalacetic acid diethyl ester, sodium salt; 4,4,4-Trifluoro-3-oxobutanoic acid, ethyl ester; and 4,4,4-Trifluoro-3-oxobutanoic acid, methyl ester	kg	Free		25%
2918.30.90.00	Other	kg	3.7%	Free (A*,AU,BH,CL,CO,D,E,IL,JO,K,KR,L,MA,OM,P,PA,PE,S,SG)	25%
	Other:
2918.91.00.00	2,4,5-T (ISO) (2,4,5-trichlorophenoxyacetic acid), its salts and esters	kg	6.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 48.5%
2918.99	Other:
	Aromatic:
2918.99.05.00	p-Anisic acid; Clofibrate; and 3-Phenoxybenzoic acid	kg	5.8%	Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 40%
2918.99.06.00	1-Hydroxy-6-octadecyloxy-2-naphthalene- carboxylic acid; and 1-Hydroxy-6-docosyloxy-2-naphthalene- carboxylic acid	kg	Free		15.4¢/kg + 57%
2918.99.14.00	2-(4-Chloro-2-methylphenoxy)propionic acid and its salts	kg	Free		15.4¢/kg + 40.5%
	Other:
	Pesticides:
2918.99.18.00	4-(4-Chloro-2-methylphenoxy) butyric acid;p-Chlorophenoxyacetic acid; and 2-(2,4-Dichlorophenoxy) propionic acid	kg	6.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 40.5%
2918.99.20	Other		6.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 48.5%
2918.99.20.10	2,4-Dichlorophenoxyacetic acid, its salts and esters	kg
2918.99.20.15	2-Methyl-4-chlorophenoxyacetic acid	kg
2918.99.20.50	Other	kg
2918.99.30.00	Drugs	kg	6.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 47.5%
2918.99.35.00	Odoriferous or flavoring compounds	kg	6.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 58%
	Other:
2918.99.43	Products described in additional U.S. note 3 to section VI		6.5%	Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 57%
2918.99.43.10	2-Methyl-3-phenyloxirane-2-carboxylic acid (P-2-P methyl glycidic acid), its salts and esters	kg
2918.99.43.50	Other	kg
2918.99.47.00	Other	kg	6.5%	Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	15.4¢/kg + 57%
2918.99.50.00	Other	kg	4%	Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	25%

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Built September 29, 2026 from HTS Revision 20 (2026) (USITC release 2026HTSRev20, published September 23, 2026, current since September 28, 2026). The schedule changes often; USITC's own site always has the current text.