Code 2923

QUATERNARY AMMONIUM SALTS AND HYDROXIDES; LECITHINS AND OTHER PHOSPHOAMINOLIPIDS, WHETHER OR NOT CHEMICALLY DEFINED


SECTION VI. Products of the chemical or allied industries

29 ORGANIC CHEMICALS

IX. NITROGEN-FUNCTION COMPOUNDS

2923 Quaternary ammonium salts and hydroxides; lecithins and other phosphoaminolipids, whether or not chemically defined: