It does. When an AF'd Hull is lifted from the water, you may have seen a light trace of emerald green powdery stuff around the waterline areas. It is found there because it's formation requires Oxygen and Salt and no water. So the waves lapping the Boot topping area, wets the surface and then when it gets real calm, that wet area dries out, leaving the Salt (Sodium Chloride) rich on the surface and then the oxygen and Chloride react with the copper oxide and produces the Copper Oxychloride.
But I can't really see that as an issue though. It should not be harmful to Fish and would likely be a very small trace amount in the water column.
Copper 1 Oxide is used (among other things) as a Fungicide and Algacide. It was for this reason that it was used in AF's. It does not dissolve in water and it is also thought to accumulate in Fish.
I too was shocked at seeing it on the list. I had only known that California was threatening it to be banned.
It was the main component in any copper based AF's. And in my opinion, could be one of the main reasons we are seeing a decline in the performance of AF's. I knew a couple of AF's had reduced the quantity of Copper Oxide without making it known and many started complaining that the AF they had used with great results for years suddenly stopped performing for them.
As I stated before Cu2O is NOT about to be banned. And some AF's have increased content. [copper (1)]
The guts of your link is:
*irgarol or chlorothalonil will no longer be able to be manufactured or imported as the approvals to do so have been declined.
* diuron, octhilinone or ziram have a time-limited approval of four years and thiram ten years
* All other substances assessed continue to be approved but are subject to additional controls.
Why let the facts get in the way of indignance.
Bit like the "schooling" you gave me on pure copper in the earths crust, eh wheels.Turns out, it does, just way less prevalent than ore. I took your correction as fact. ~
From what I have read I do agree with the rest above tho.
Cu & Cu2O to derivatives Copper chlorides(s) copper oxychlorides, hydroxides, carbonate and the efficacy of each giving their live span, relative toxicity, solublity etc. Interesting the "green" above the water line yet brown below. As stated the insolubilility of Cu2o.
I guess I'm wasting words as I've glazed over myself.
BTW... None of our family work for MAF, DOC or councils. Jen works for NOAA.