1,1,3,3-SUBSTITUTED HYDROXY INDANES HAVING THE FORMULA ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3, which may be the same or different, are selected from the group of hydrogen, halogen and optionally substituted alkyl, cycloalkyl, aralkyl and aryl, in addition to whichR.sup.2 and R.sup.3, when they are in the ortho position relative to one another, may be taken together with the carbon atoms of the benzene ring to which they are attached to form a 5 membered carbocyclic ring,R.sup.4 is ##STR2## wherein R.sup.10 and R.sup.11, which may be the same or different, are selected from the group of hydrogen and optionally substituted alkyl, cycloalkyl, aralkyl and aryl, andR.sup.5, r.sup.6, r.sup.7, r.sup.8 and R.sup.9, which may be the same or different, are selected from the group of optionally substituted alkyl, cycloalkyl, aralkyl and aryl, the arrangement being such thatR.sup.5 and R.sup.10 and/orR.sup.6 and R.sup.7 and/orR.sup.8 and R.sup.9 may form together with the carbon atoms to which they are attached a cycloaliphatic ring in addition to whichR.sup.6 and/or R.sup.7 may also represent hydrogen.