Synonyms: Boron(1+),bis(ethanol)difluoro-, fluoride, (T-4)- (9CI); Ethanol, compd. withtrifluoroborane (2:1); Ethyl alcohol, compd. with BF3 (2:1) (7CI); Ethylalcohol, compd. with boron fluoride (BF3) (2:1) (8CI); Borane, trifluoro-,compd. with ethanol (1:2); Boron fluoride (BF3), compd. with ethyl alc. (1:2)(8CI); Boron trifluoride diethanol complex