The molecular weight of this polymer is ~28,000, as mentioned in the "Properties" section of the product detail page. This material is not soluble in toluene or tetrahydrofuran, however a study found this material to be soluble in chloroform, ether, and xylene.
To review the study please see this journal article: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3146108/