{HEAD ~ The concentration} of the para aminoacetanilide is determined by a color test in which the para aminoacetanilide was reacted with {TAIL ~ phenol} 
{ HEAD ~ The concentration } of the para aminoacetanilide is determined by a color test in which the para aminoacetanilide was reacted with { TAIL ~ phenol }
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL