Poly(oxy-1,2-ethanediyl), .alpha.,.alpha.-phosphinicobis.omega.-(hexyloxy)-, ammonium salt
???(??):
Poly(oxy-1,2-ethanediyl), α,α′-phosphinicobis[ω-(hexyloxy)-, ammonium salt (1:1);Poly(oxy-1,2-ethanediyl), .alpha.,.alpha.-phosphinicobis.omega.-(hexyloxy)-, ammonium salt