I spent a few weeks playing with this stuff, 11X14 sheets, trying some tricks with enlarging negs.
Dektol, LD-20, kodalith, it didn't matter. I could not get enough contrast with it. I know my chemistry is good, so I assume the film is aged.
There was no data sheet inside the (unopened) box, which I thought was strange. But for ten or twelve bones, it might be worth playing with.