CAS 70131-67-8 appears in our catalog under these names: Polydimethylsiloxane, hydroxy terminated, M.W. 4200 , POLY(DIMETHYLSILOXANE), HYDROXY TERM- &, Poly(dimethylsiloxane), hydroxy termina&, POLY(DIMETHYLSILOXANE), HYDROXY TERM-, POLY(DIMETHYLSILOXANE), HYDROXY TERM,. Offered by: Thermo Scientific (Alfa Aesar), Sigma-Aldrich, Fluorochem. Available pack sizes: 50ml, 250ml, 1L, 2.5L, 100ML, 500ML, 100g, 500g.