Other
Carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulfonated, nitrated or nitrosated derivatives: > Other: > Other: > Other
Duty Rate (from China)
Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Products classified under HTS 2918.99.50.00
Polyethylene Glycol Diacetate
Diacetate ester of polyethylene glycol, featuring multiple acetate ester groups and ether oxygen functions on the PEG chain. Classified in 2918.99.5000 as carboxylic ester with additional oxygen function. Used in pharmaceuticals and polymer synthesis.
Lactic Acid Oligomers
Linear oligomers of lactic acid (3-10 monomer units) with terminal carboxylic acid and hydroxyl functions. Classified 2918.99.5000 due to multiple oxygen functions on the hydroxy acid chain. Used as biodegradable plasticizers and pharma intermediates.
Tartaric Acid Esters
Mono- or diesters of tartaric acid with C1-C6 alcohols, retaining free carboxyl and hydroxyl functions. HTS 2918.99.5000 as carboxylic acids with additional oxygen function. Used in chiral synthesis and food antioxidants.
Citric Acid Monoglyceride
Partial ester of citric acid and glycerol, featuring multiple carboxyl, ester, and hydroxyl oxygen functions. Classified 2918.99.5000 per Chapter 29 ester classification rules. Used as emulsifier in food and cosmetics.
Triacetin (Glycerol Triacetate)
Triacetin is the triester of glycerol and acetic acid, classified under HTS 2918.99.5000 as a carboxylic acid ester with additional oxygen function (multiple ester groups). It is a chemically defined organic compound used as a plasticizer, solvent, and pharmaceutical excipient. This fits Chapter 29 note (A) for esters classified by the later-occurring compound.
Glyceryl Monostearate (GMS)
Glyceryl monostearate is a monoester of glycerol and stearic acid, providing both ester and alcohol oxygen functions, classified in 2918.99.5000. Used as an emulsifier in food, cosmetics, and pharmaceuticals. Meets Chapter 29 criteria for chemically defined carboxylic esters with additional oxygen functions.
Monoacetin (Glycerol Monoacetate)
Monoacetin is the monoester of glycerol and acetic acid, with two free hydroxyl groups providing additional oxygen functions. Falls under HTS 2918.99.5000 as chemically defined ester. Used as humectant, solvent, and in nicotine delivery systems.