I used to do chlorinations in the organic chemistry field, specifically with naocl, thats sodium hypochlorite.
Ive substituted it with DCCA, TCCA as well, thats di and trichlorocyanuric acid.
Theyre chlorinating chemicals, eg poolshock for swimming pools etc. Sodium hypochlorites a bit bulky thats all. Its available 15% as pipe cleaner stabilised. The tri-shock is 92% available chlorine, the di- 66%
Trichlorocyanuric acid takes a while to go into solution
Dichlorocyanuric acid dissolves easily
If you want to keep the free chlorine in solution keep the temperature down. And use a dilute solution. It starts coming out about 13c
What ph ranges can you effect auric chloride reaction at? I suspect the ph value would drift and youd need to adjust ph periodically..
And can you preferentially chlorinate gold leaving some other base metals unnaffected using ph?
I wondered if it can be used to leach in certain situations thats all
Edit: answered my own question,
"
Controlling solution pH and Eh is important for stabilizing the gold complex. Failing to do this would cause the gold to reprecipitate, after it is dissolved from the ores (Baghalha, 2007; Soo Nam et al., 2008). The stability region of [AuCl4]¯ is determined by the Pourbaix diagram of the Au–Cl system."
Basicaly use an orp meter as it drops to 400 top it back to 1000 keep ph within certain boundary. When it stops moving reaction is over