Spectrum Chemical manufactures and distributes fine chemicals with quality you can count on including those with CAS number 9005-70-3, Whether you call it Polysorbate 85, Tween 85 , Polyoxyethylene (20) Sorbitan Trioleate or Sorbimacrogol Trioleate 300 you can be assured the Polysorbate 85 products offered by Spectrum, meet or exceed the grade requirements or specifications for each individual product.