https://www.sigmaaldrich.com/US/en/product/aldrich/409529
average Mn 500, methacrylate, 900 ppm MEHQ as inhibitor CAS Number: 25736-86-1; Synonyms: Ethoxylated 2-hydroxyethyl methacrylate,Poly(oxy-1,2-ethanediyl),...
poly ethyleneglycol methacrylateaveragemnether