Cheap, but good, derusting sauce

[Nessism]

This seems like good stuff. More mild than many other derusting methods, and cheap.

1 liter of water
100 grams of citric acid (available on Amazon)
One of the following: 40 grams sodium carbonate (washing soda), or 63 grams sodium bicarbonate (baking soda), or 30 grams sodium hydroxide (lye)

Scale volume of solution as needed.

This stuff derusts better than Evaporust, while being safe and mild with the base material. It lasts much longer than Evaporust also.

Never use harsh chemicals like hydrochloric/muriatic acid to derust. Yes, that stuff is fast, but it's crazy harsh and should be avoided.

https://www.youtube.com/watch?v=fVYZmeReKKY

[chuck hahn]

Heres my 2 cents for what its worth.
First, if theres rust the galvanization has already been compromised. So mildness or harshness really is irrelevant.
Second, once its compromised its gonna rust again.
Third, acids are quick and easily neutralized with baking soda nullifying any hazmat concern.
Fourth, with acids i can derust, dry and have a liner in in a matter of an hour or two instead of extended waits for another sauce to finish.
Fifth , no measuring 5 ingredients. Dump in acid and stuff a rolled up rag in the filler hole and shake tank every 5 minutes or so. Neutralize ad drain into a bucket. Inspect and repeat if needed.

Use what you want is the common advice. For me its acid, get it done and move on.

[Nessism]

Heres my 2 cents for what its worth.
First, if theres rust the galvanization has already been compromised. So mildness or harshness really is irrelevant.
Second, once its compromised its gonna rust again.
Third, acids are quick and easily neutralized with baking soda nullifying any hazmat concern.
Fourth, with acids i can derust, dry and have a liner in in a matter of an hour or two instead of extended waits for another sauce to finish.
Fifth , no measuring 5 ingredients. Dump in acid and stuff a rolled up rag in the filler hole and shake tank every 5 minutes or so. Neutralize ad drain into a bucket. Inspect and repeat if needed.

Use what you want is the common advice. For me its acid, get it done and move on.

The main active ingredient of this sauce is citric acid. There are only two ingredients, both available on Amazon for cheap.

The main problem with acid is that it will eat the rust, and also eat the metal. Much more so when using something strong like HCl/muriatic acid.
This formula is good on rust removal, and it will also protect the base metal to the best possible extent.

That's that's the key takeaway. Never use strong acid, unless you are willing to accept pitting and erosion of the base metal. The formula listed here is mild, cheap, and effective.

[chuck hahn]

Citric acid is for oranges and lemons. Washing powder is for clothes. Lye is for disposing of bodies. Baking soda is for mommas biscuits. Muriatic acid is for work.