Topic: Boeshield Rust-Free??

[5F08KGT]

Do we know what kind of acid this stuff is?

[midlife]

I don't think it is acid-based, but more of a oil or petroleum product.  It is not a rust remover, but a rust preventative solely by not allowing steel to be exposed to moisture.  It is also not permanent.

[Bob Gaines]

I don't think it is acid-based, but more of a oil or petroleum product.  It is not a rust remover, but a rust preventative solely by not allowing steel to be exposed to moisture.  It is also not permanent.

The OP is referring to another product in the Boe Shield line of products that is a rust remover. I am not familiar with it or it's ingredients 

[midlife]

You are right!  I saw BoeShield and immediately jumped to the conclusion that it was the T9!  My apologies.

[J_Speegle]

Shouldn't be that difficult to find the MSDS for the product

Try this

https://www.theruststore.com/The-Rust-Store-MSDS-Sheets-W16C3.aspx

[svo2scj]

The bottle show phosphoric acid.    MSDS also cites Isopropyl alcohol. 

Mark
P.S.  Interestingly it is also marked biodegradable Formula.

[sgl66]

I have used it before to remove surface rust from tail pipes. It's more aggressive than Evaporust.