Took a 1min search using "freezing safrole" to find this:
Post 294073 (https://www.thevespiary.org/talk/index.php?topic=9414.msg29407300#msg29407300)
(LaBTop: "Freezing sassafras:", Methods Discourse)
Dude, learn to use the search engine! I see why others find this extremley annoying...cuz these posts are so repetitive!
Also, simple distillation of sassafras oil without a fractionating column will yield very pure crystal clear safrole. Double distill if you really want to have pure safrole.