... 5 assay:98% light yellow liquid with irritating smell thioacetic acid C A S]: 507-09-5 [Molecular Formula]: C2H4OS ... 4?), m.p., <-17?, flash point 11?, boiling range: 88-91?, specific weight range: 1.065-1.069, can be ... decomposed into acetic acid and sulfureted hydrogen, soluble in water, alcohols and ether; ... Metal(pb%)≤0.0001≤0.0002≤0.0003 Thiolacetic acid (chemical reagent)