"Karl Townsend" wrote in message
...
On Mon, 12 Sep 2011 18:50:05 -0400, "Carl Ijames"
wrote:

I just had to look -
http://www.zep.com/products/products...rchTer m=1049
Says:

A protective coating for ferrous surfaces where safety, low-odor,
short-term
protection and paintability are important. Leaves no visible residue. Will
not interfere with subsequent painting of treated surfaces.

Sounds good. MSDS says 10-20% by weight triethanolamine and 5% by weight
sodium nitrite, neither of which are particularly nasty at the final
concentrations (I guess the TEA is for pH control? and the sodium nitrite
will be sacrificially oxidized to nitrate to protect the iron surface).

sodium nitrite is used in plasma cutter water tanks to prevent rust.
It is readily available for a low cost. Seen regularly on eBay for
example.


IIRC TEA is the main ingredient in quite a few of the "synthetic" water
soluble metalworking fluids particularilt those targeted for cutting
aluminum.