I got a pile of GC electronic contact cleaner GC No. 210-4 / Walsco No. 80-04 - it was given to me if I would "get rid of it". [...] contains 1-1-1-Trichlorothane, whatever that is. It does work well.
Superb degreaser and cleaner! Excellent flux remover. Excellent all around cleaner and solvent. Good stuff! Don't breathe it. Use ventilation. Good score!