Polyoxy(methyl-1,2-ethanediyl), .alpha.,.alpha.,.alpha.-1,2,3-propanetriyltris.omega.-(sulfothio)acetyloxy-, trisodium salt

Poly[oxy(methyl-1,2ethandiyl)], alpha,alpha′,alpha′′-1,2,3-propantriyltris[omega-[[(sulfothio)acetyl]oxy]]-, tri-Natriumsalz, (50 PO)