DIY antifoul paint. Which copper Black or orange powder

[joyfull]

I have been advised to buy budget antifoul paint (£36 per 2.5 litre) and add copper powder at ratio of 250gm per 2.5 litre paint.

Should I buy the black or the orange powder.

I think one is cupric oxide ( CUO black powder) and one cuprous oxide (CUO2 orange).

Or is there some other form of copper powder recommended.

 

[RichardS]

Coppercoat, not that it works necessarily, is metallic copper rather than an oxide.

Richard

 

[langstonelayabout]

I have been advised to buy budget antifoul paint (£36 per 2.5 litre) and add copper powder at ratio of 250gm per 2.5 litre paint.
Should I buy the black or the orange powder.
I think one is cupric oxide ( CUO black powder) and one cuprous oxide (CUO2 orange).
Or is there some other form of copper powder recommended.

Who advised you to do this, and why?

If doing this was effective we would all do it, and the paint companies would do it too as they could make a bigger profit that way.

Or is there something about this most of the rest of us don't know about? (BTW CopperCoat didn't work in Portsmouth harbour)

 

[Kwik Decision]

International's Micron 350 contains Dicopper oxide (Cu2O, cuprous oxide) as a key ingredient (between 25 and 50%), as per the safety data sheet:

https://international-yachtpaint.com/s3/documents/TDS/Micron_350_eng_A4_20181214.pdf

Hemple's Tiger Extra also contains 25 - 50% of dicopper oxide.

Therefore dicopper oxide would seem to be the one to use...

 

[Molteni]

Who advised you to do this, and why?

If doing this was effective we would all do it, and the paint companies would do it too as they could make a bigger profit that way.

Or is there something about this most of the rest of us don't know about? (BTW CopperCoat didn't work in Portsmouth harbour)

It may be that manufacturers put in additives up to a legal limit, but over the limit would actually make it more effective?

 

[LONG_KEELER]

Sorry old thread , but is there any feedback on fortifying antifoul with cuprous oxide ?

 

[Fantasie 19]

Sorry old thread , but is there any feedback on fortifying antifoul with cuprous oxide ?

If it worked we'd all being doing it... and adding kilo's of chilli powder for good measure....