... thermal stability of suloble in water.Advantage:nutritional supplement. Vitamin B1 mono 98.5%/Thiamine Mononitrate BP/USP/EP 25KG/CARTON ... OR DRUMVITAMIN B1 Thiamine Mononitrate 1.Quality Specification: BP2008, EP4.0, USP31.2 ... : Preserve in a tightly closed container,protected from light vitamin b1