Muriatic Acid

graygun

Hunter
Joined
Sep 24, 2008
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4,068
City & State/Province
Junction,Tx
Other than etching concrete,cleaning masonry,stone and boat hulls what other uses does it have?
 
cleaning spider webs off of AC coils

capable of causing you a serious health risk if you absorb it, also I suppose some twisted meth cook uses it for cleaning his labware or something, who knows, it is nasty stuff in the wrong hands
 
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Flux for 50/50 solder..
Clear rock and minerals..
Remove rust stains from porselein.
 
If you keep any around, you might try to store it somewhere outdoors in the shade where the air can circulate around it. If you keep it in your shop, garage etc., the fumes will rust the heck out of any ferrous objects in its vicinity. I badly pitted some stainless steel plate that was stacked about two feet from a gallon I had stored. I had the cap screwed on tight, but the fumes get out anyway. That's right, the fumes from a closed bottle rusted and pitted stainless steel. Beats all I ever saw. I had been warned, but just wouldn't believe it until it jumped up and bit me in the backside.
 
cadillo said:
If you keep any around, you might try to store it somewhere outdoors in the shade where the air can circulate around it. If you keep it in your shop, garage etc., the fumes will rust the heck out of any ferrous objects in its vicinity. I badly pitted some stainless steel plate that was stacked about two feet from a gallon I had stored. I had the cap screwed on tight, but the fumes get out anyway. That's right, the fumes from a closed bottle rusted and pitted stainless steel. Beats all I ever saw. I had been warned, but just wouldn't believe it until it jumped up and bit me in the backside.

Totaly agree with that. Been there.
 
cadillo said:
If you keep any around, you might try to store it somewhere outdoors in the shade where the air can circulate around it. If you keep it in your shop, garage etc., the fumes will rust the heck out of any ferrous objects in its vicinity. I badly pitted some stainless steel plate that was stacked about two feet from a gallon I had stored. I had the cap screwed on tight, but the fumes get out anyway. That's right, the fumes from a closed bottle rusted and pitted stainless steel. Beats all I ever saw. I had been warned, but just wouldn't believe it until it jumped up and bit me in the backside.

I had a gallon jug under a bathroom sink and it did similar damage.
 
I recently built a pie-safe cabinet for my daughter-in-law. For those who aren't familiar with this type cabinet, it has punched metal insert panels in the doors.
She wanted to antique the cabinet to make it look old, which meant the shiny tin panels I ordered had to be rusted. I did this by soaking them in water/muriatic acid and then rinsing them off with water. Let them dry and they start to rust.

I had to repeat this several times to get the degree of rustiness I wanted. I followed the water/acid ratio recommended on the bottle.
 
Used extensively in the oil field to rejuvenate older wells by removing (dissolving) old well mud or carbonates that would otherwise plug the well bore over time.
 
At my job we had a acid spill and caustic spill tanks overflowed
Safety valves bypassed. Small explosion and fire plant down a week
Not something i would use around the house for cleaning
 
I had some paint overspray on my windows that was really hard to scrape off. I tried paint remover, acetone, ect., but muriatic acid dissolves it on contact. I put it in a plastic spray bottle and spray it on. Pooof!
 
A couple of words of caution. It does do a good job of cleaning out toilets but make sure you do not have metal pipes in your system. It will react with any metal present and put holes in it.

Also, if you are diluting it, slowly add the acid to the water and stir. It will generate quite a bit of heat. If you add water to the acid you may get a lot of fuming and possibly splattering of the acid. Avoid those fumes! They will clean out your sinuses permanently.
 
cadillo said:
If you keep any around, you might try to store it somewhere outdoors in the shade where the air can circulate around it. If you keep it in your shop, garage etc., the fumes will rust the heck out of any ferrous objects in its vicinity. I badly pitted some stainless steel plate that was stacked about two feet from a gallon I had stored. I had the cap screwed on tight, but the fumes get out anyway. That's right, the fumes from a closed bottle rusted and pitted stainless steel. Beats all I ever saw. I had been warned, but just wouldn't believe it until it jumped up and bit me in the backside.
Thanks for that!!! I was wondering why after 10 years of no rust problems I discovered rust on the vice screw of my cut-off saw and the roller axles on my shop door! The muratic acid is being exported to a place outside as soon as I post this!
 
H-marlin said:
A couple of words of caution. It does do a good job of cleaning out toilets but make sure you do not have metal pipes in your system. It will react with any metal present and put holes in it.

Also, if you are diluting it, slowly add the acid to the water and stir. It will generate quite a bit of heat. If you add water to the acid you may get a lot of fuming and possibly splattering of the acid. Avoid those fumes! They will clean out your sinuses permanently.

As my chemistry teacher taught us, "Add acid to water, is what you ought-er."

Good note about the metal. I couldn't figure out why my mother-in-law was asking me to change out the flush lever on her toilet once a month. It's one of those side-mounted flush levers that has a spring return built into it, and the lever would start sticking. After replacing it a few times, I realized she was pouring muriatic acid into the tank because the plumber told her to. It would splash on the lever arm, and ruin the spring.

Muriatic Acid isn't the only thing that will cause the stuff in your garage to rust. I had the same problem with a plastic tub of chlorine tablets for my septic system discharge. Even in a sealed tub, the chlorine gas was getting out and caused me a lot of headaches.
 

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