poly(oxi-1,2-etandiyl), α-karboximetyl-ω-hydroxi-, C12-15-alkyletrar (7 mol etylenoxid genomsnittligt molförhållande) ###>Poly(oxy-1,2-ethanediyl), .alpha.-carboxymethyl-.omega.-hydroxy-, C12-15-alkyl ethers (7 mol EO average molar ratio)