United States · Heading· 10 subheadings· 0 codes
2904Sulphonated, nitrated or nitrosated derivatives of hydrocarbons, whether or not halogenated
Subheadings (6-digit WCO)
290410- Derivatives containing only sulpho groups, their salts and ethyl esters→290420Derivatives containing only nitro or only nitroso groups→290431Perfluorooctane sulphonic acid→290432Ammonium perfluorooctane sulphonate→290433Lithium perfluorooctane sulphonate→290434Potassium perfluorooctane sulphonate→290435Other salts of perfluorooctane sulphonic acid→290436Perfluorooctane sulphonyl fluoride→290491Trichloronitromethane (chloropicrin)→290499- - Other→