View Full Version : copper sulphate

10-19-2005, 09:05 AM
Any one have an opinion on this product and it's uses as a fungicide?

P.I. Stazzer-Newt
10-19-2005, 09:10 AM
Would depend on what fungus and where.
It is water soluble and moderately toxic - used for eons in "bordeaux mixture".

10-19-2005, 09:41 AM
i think (?) they use copper salts in Ajax, Comet, Old Dutch (turns blue in water) and are listed as fungicide/ mildewicide cleaners

copper is also a spermicide

10-20-2005, 12:04 PM
in the bilge and other tight little spots

Frank Wentzel
10-20-2005, 03:55 PM
Copper sulfate is kind of acidic (i.e., a salt of a strong acid and a weak base, therefore acidic) and would wreak havoc on any less noble metals. A less aggressive substitute would be copper naphthenate otherwise known as "coppertox" or other brand names. It is usually sold as a 10 to 20% solution in mineral spirits. The material itself is a dark green, waxy, non water soluble solid. Does a great job on fungus and provides some water repellancy as well.

/// Frank ///

David W Pratt
10-21-2005, 01:59 PM
I remember reading in an old (1926) lab manual that making a 2% soln of CuSO4 and soaking a cloth in it, letting cloth dry. Then use cloth to rub leather book jackets, will prevent mildew.
Good luck.

10-21-2005, 04:36 PM
mabie it is the Coppertox, it's green and it stinks! I originaly used it on the cut end of a wood retaining wall.

[ 10-21-2005, 05:40 PM: Message edited by: gert ]