2923Level 3

Quaternary ammonium salts and hydroxides; lecithins and other phosphoaminolipids, whether or not chemically defined

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292310Quaternary ammonium salts and hydroxides; choline and its salts, whether or not chemically defined

292320Lecithins and other phosphoaminolipids, whether or not chemically defined

292330Quaternary ammonium salts and hydroxides; tetraethylammonium perfluorooctane sulphonate, whether or not chemically defined

292340Quaternary ammonium salts and hydroxides; didecyldimethylammonium perfluorooctane sulphonate, whether or not chemically defined

292390Quaternary ammonium salts and hydroxides; whether or not chemically defined n.e.c. in heading no. 2923

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