Wow - Muriatic Acid is some noxious stuff

spidey07

No Lifer
Aug 4, 2000
65,469
5
76
Getting ready to close the pool and never needed to use Muriatic Acid (Hydrochloric). This stuff is 31.5%, 20 Baumme. Has a damn pH of under 1. I took proper precautions and had eye protection, no gloves though.

The smell of this stuff was the most caustic/corrosive smell I've ever been in contact with and my nose never came anywhere near it or the vessel I used to pour it into. Still, even with my face being upwind it hit me, the vapor.

It wasn't just a "yeah, that's a strong corrosive smell", but a "get your body and face the hell away from it NOW!" smell. That shit is going to be tucked away into a special place in the garage, don't want that anywhere near anything.
 

HamburgerBoy

Lifer
Apr 12, 2004
27,111
318
126
Ha, that was one of my first experiences with it too, as a 12 year old pouring it in a poorly ventilated garage. Never did it that way again. After gagging and running outside, I was actually a bit surprised at how it still had a kind of vinegar smell, just a bazillion times stronger.

EDIT: Protip: Old, heat-exposed bags of chlorine shock powder are even worse.
 

SKORPI0

Lifer
Jan 18, 2000
18,469
2,407
136
Hazardous-Material-Industrial-Signs-RTK17BBVPLY2WY-lg.jpg


You mean to tell me you didn't read the Hazmat info? It clearly says "avoid breathing fumes". :rolleyes:
 

DrPizza

Administrator Elite Member Goat Whisperer
Mar 5, 2001
49,601
167
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www.slatebrookfarm.com
I used it to clean my garage floor. Opened the garage and poured the stuff on straight from the bottle. It was really cool to watch my floor sizzle, and see a fog forming over the floor. It came out awesome.
 

yhelothar

Lifer
Dec 11, 2002
18,409
39
91
I also used it to clean some horrible oil leaks on my garage floor. The stuff was so strong that you could see parts of the concrete disintegrated. It did a helluva job cleaning though.
 

Lemon law

Lifer
Nov 6, 2005
20,984
3
0
Yes hydrocloric acid is some real nasty stuff, but it can't hold a candle to the florine based variety.
 

Crono

Lifer
Aug 8, 2001
23,720
1,502
136
Strong pure acids and bases are the best cleaning agents. Mix them together for serious fun. :D (don't really)
 

Crono

Lifer
Aug 8, 2001
23,720
1,502
136
Yes hydrocloric acid is some real nasty stuff, but it can't hold a candle to the florine based variety.

Do they sell hydrofluoric acid in regular stores? That stuff is seriously dangerous, even low molarity it will eat away at almost anything.

EDIT: Apparently, "dilute hydrofluoric acid is a component of household rust stain remover and in car washes in 'wheel cleaner' compounds" (Wikipedia). I learned something new today.
 
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BladeVenom

Lifer
Jun 2, 2005
13,365
16
0
Do they sell hydrofluoric acid in regular stores? That stuff is seriously dangerous, even low molarity it will eat away at almost anything.

EDIT: Apparently, "dilute hydrofluoric acid is a component of household rust stain remover and in car washes in "wheel cleaner" compounds" (Wikipedia). I learned something new today.

You can also get it for etching glass. Hydrofluoric acid is more toxic, but it's not one of the strongest acids.

You want the strongest stuff you can buy at a hardware store, try Rooto professional drain cleaner. It's 93% sulfuric acid.
 

spidey07

No Lifer
Aug 4, 2000
65,469
5
76
Of corse I knew to avoid fumes. I took every precaution not to but still got a whif. It's not like it made a vapor. I poured it into the pool down wind and still caught some.
 

Crono

Lifer
Aug 8, 2001
23,720
1,502
136
Of corse I knew to avoid fumes. I took every precaution not to but still got a whif. It's not like it made a vapor. I poured it into the pool down wind and still caught some.

You know what gear you need to get next time...

cooking-suit.jpg


(took too long for a Breaking Bad reference)
 

ussfletcher

Platinum Member
Apr 16, 2005
2,569
2
81
Burns the skin a bit too. Oh the joys of cleaning masonry! We typically used it to eat the mortar off of brickwork, cleans it up very nicely. I only made the mistake of standing directly over the container when opening it once, though I'm sure I've inhaled quite a bit over time. Its nothing to worry about in comparison to things like xylol used to clean off caulk.
 

Red Squirrel

No Lifer
May 24, 2003
69,718
13,338
126
www.betteroff.ca
I remember playing with hydrochloric acid in grade 9 science class. That stuff was intense. It was my first time even seeing acid so I had no idea what to expect. Was fun though, some of the reactions were pretty crazy. Sulfuric acid was fun too. Thinking about it now, I'm surprised they never made us wear gloves or mask/face shield of some kind.
 

iamwiz82

Lifer
Jan 10, 2001
30,772
13
81
Do they sell hydrofluoric acid in regular stores? That stuff is seriously dangerous, even low molarity it will eat away at almost anything.

EDIT: Apparently, "dilute hydrofluoric acid is a component of household rust stain remover and in car washes in 'wheel cleaner' compounds" (Wikipedia). I learned something new today.

The company I work for sells ultra pure HF (along with HCL and H2SO4). The electronic devices LOVE the environment. Cisco switches are not acid proof, shocklingly :p.
 

spidey07

No Lifer
Aug 4, 2000
65,469
5
76
I remember playing with hydrochloric acid in grade 9 science class. That stuff was intense. It was my first time even seeing acid so I had no idea what to expect. Was fun though, some of the reactions were pretty crazy. Sulfuric acid was fun too. Thinking about it now, I'm surprised they never made us wear gloves or mask/face shield of some kind.

The concentrations were nowhere near this. Hell I took a ton of chemistry in college now I know why the vent hood was used.

Bleach! I can still taste it.
 

spidey07

No Lifer
Aug 4, 2000
65,469
5
76
I used it to clean my garage floor. Opened the garage and poured the stuff on straight from the bottle. It was really cool to watch my floor sizzle, and see a fog forming over the floor. It came out awesome.

Alright smarty pants. You should know what that vapor was and why it super duper bad.

I was pouring hcl into chlorinated water at 8 ppm Cl.
 

olds

Elite Member
Mar 3, 2000
50,096
771
126
Back in the 70's we used to clean pool walls (drained pools) with muriatic acid. That stuff will stop your lungs. We'd come running out of the pools trying to catch our breath. Went through a pair of tennis shoes a week. We had no idea or training on the hazards.
 

mOeeOm

Platinum Member
Dec 27, 2004
2,588
0
0
You know what gear you need to get next time...

cooking-suit.jpg


(took too long for a Breaking Bad reference)

I wear that stuff at work everyday. I hate my job during summer, If you think you sweat before...