OSPHO warning

[pgerhardt]

OSPHO is a very strong acidic solution that converts rust (iron oxide) into iron phosphate which is black and inert. It is also very good at treating newly sand blasted or stripped metal to prevent flash rusting and etch it before priming. I used it back in the seventies and it was very effective.

But is is very strong stuff. I went to get some from a 1/4 full gallon bottle I had stored in my basement but it was gone! It had eaten through the bottom of its plastic bottle and turned a section of my concrete floor into dust! OK, I had that bottle since the seventies, but still, eating its way out of its own bottle!

I was sure it was the kind of thing the government would ban, but I was wrong and got a 32 oz bottle on Amazon. Knowing how it had the ability to escape, I checked the bottom of the new bottle. It looked a little funny. It had turned opaque white while the rest of the bottle was still translucent. I immediately ordered a 32 oz glass bottle from Amazon. My OSPHO is now safely stored in a glass container.

So if you have some OSPHO especially an old bottle check it for leaks, and you might want to transfer it to a glass container.