Professional manufacturer contact colloid bga solder flux 10cc :
Good special effects contact solder:
Advanced SMT solder products
A division of AMT
Flux type: RL-424
Caution: Harmful if swallowed or inhaled
This prodcut may also contains rosin (a sensitizer).
Use with adequate ventilation.
Avoid breathing fumes, especially when soldering .Wash after handing .
Do not re-use containers.
For industrial form children see material safety data sheet before use.