| abstract |
(57) [Summary] [Purpose] Distillation that is a by-product in the production of 1,1,1,3,3,3-hexafluoropropan-2-ol by reducing hexafluoroacetone hydrate with hydrogen. Difficult one A method for removing 1,1-trifluoropropan-2-ol is provided. [Structure] Addition of an organic amine compound such as hydrazine or hydroxylamine to 1,1,1,3,3,3-hexafluoropropan-2-ol containing 1,1,1-trifluoropropan-2-ol Then, a purification method comprising distilling and then distilling. |