'Tw-30' is an algaecide and bacteriostat. Its Federal EPA registration number is: 6190-7. It was originally approved by EPA on 06 Nov 1967. Its registration got cancelled on 19 Dec 1988. It has a 'Caution' signal word. It has the following active ingredients: Alkyl* dimethyl benzyl ammonium chloride *(60%C14, 30%C16, 5%C18, 5%C12) and Alkyl* dimethyl ethylbenzyl ammonium chloride *(50%C12, 30%C14, 17%C16, 3%C18). It's approved for 1 sites including cooling tower water. It is also approved for 2 pests and pest groups including but not limited to algae and slime-forming bacteria.