| abstract |
Provided is a flux activator containing a halogen compound represented by formula 1 below: n n n n n n n n n n where X 1 and X 2 represent different halogen atoms, R 1 and R 2 are each a group represented by any one of formulas —OH, —O—R 3 , —O—C(═O)—R 4 , and —O—C(═O)—NH—R 5 , R 1 and R 2 optionally represent the same group or different groups, R 3 , R 4 , and R 5 are each an aromatic hydrocarbon group having 1 to 18 carbon atoms or an aliphatic hydrocarbon group having 1 to 18 carbon atoms, and R 3 , R 4 , and R 5 optionally represent the same group or different groups. |