Phenolsulfonic acid-formaldehyde-urea condensate and its sodium salt is classified as a List 3 inert ingredient (under CAS Reg. No. 52277-29-9) and is uncategorized as to list classification status under CAS Reg. Nos. 29405- 16-1, 9041 -04-7, and 71 608- 70-3.You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.