If you are scared of cyanide, eco-goldex is maybe good considering as an alternative option, but it have it´s own problems.
Orvi --- I NEED to make a correction here !!!
eco-goldex is IN FACT a cyanide process !!!
the foundation of eco-goldex uses potassium ferri or ferro cyanide (can't remember if it's ferri or ferro)
So it's a potassium/iron/cyanide complex
The iron complexed with the cyanide in it's self makes it a safe product (the cyanide is not "free" to act as cyanide) so the potassium/iron/cyanide complex is actually use in the food industry
In order for the cyanide to work as cyanide - the iron needs to be disassociated from the cyanide thereby freeing the cyanide to work as cyanide
What eco-goldex has done is complexed the potassium ferri/ferro cyanide with something like 6 or 7 other chemicals
It is something in (&/or combination) of their own complex that disassociates the iron from the cyanide
allowing the cyanide to be cyanide
In other words - once the iron is disassociated from the potassium ferri/ferro cyanide what you in fact have is
potassium cyanide
In other words - eco-goldex - is in fact - nothing more then potassium cyanide & therefor
MUST be treated/handled exactly the same as if you started with potassium cyanide in the first place
The problem with eco-goldex is that because of the other chems in their complex - used to disassociate the iron from the cyanide - it also makes it
very difficult to recover the gold from solution after the cyanide has dissolved the gold
You can use straight up potassium ferri/ferro cyanide (instead of the eco-goldex) with less problems to recover your gold
With straight up potassium ferri/ferro cyanide you (again) just need to disassociate the iron from the cyanide
You can effect this disassociation by exposing the dissolved potassium ferri/ferro cyanide to UV
The bottom line is that once you disassociate the iron from potassium ferri/ferro cyanide complex -
you in fact have potassium cyanide & therefor
MUST be treated/handled as potassium cyanide --- regardless of whether your potassium ferri/ferro cyanide comes from the eco-goldex product or you start out with straight up potassium ferri/ferro cyanide
I have in fact worked with all three (eco-goldex - straight up potassium ferri/ferro cyanide & potassium cyanide) --- all three result in a flat out potassium cyanide process & MUST be handled as a potassium cyanide process
As a matter of personal experience - & due to the difficulty getting your gold back from the eco-goldex product -
I will never ever again use their product - & the only reason I would consider using straight up potassium ferri/ferro cyanide (exposed to UV) is if I couldn't get actual potassium cyanide (or sodium cyanide)
The important thing to understand is that they are all a potassium cyanide process - having ALL the same dangers & therefore MUST be treated as such
Eco-goldex makes the claim that it is a safe product - that just is not true - it is only safe up to the point you dissolve it - once it is dissolved - it is in fact potassium cyanide (which is why it dissolves gold) & must be handled as such
Edit to add; - if you are afraid of (&/or do not understand) the cyanide process then be just as afraid of eco-goldex - AND have a FULL understanding of working with cyanide - at which time you are best served to go get actual potassium or sodium cyanide instead of working with "work arounds" that complicate the cyanide process
Kurt