Originally Posted by sparrowhawk1
Thank you. I've been using muriatic acid for years and knew it was also called hydrochloric Acid but didn't know the distinction. It's great for removing calcium deposits of any type and to state the obvious: do not breathe the fumes
Laboratory technician here. They are indeed the same thing. 'Hydrochloric' is the more accurate chemical name and 'Muriatic' is an older name that is still used by the general public, contractors, hardware
Which name it goes by is not related at all to it's concentration. Lab-grade, concentrated HCl is 37%. If you're buying
'muriatic' then you're probably getting it from a hardware
store and it's probably a little more dilute. Here in Bermuda
, it's sold at 30%. Maybe in the States 25% is the industry standard? Both are still quite concentrated!
At any rate, dilute it to whatever % you want to use, but make sure you read the label. If you're used to using 25%, or 20% or whatever and you buy a bottle of 30% the difference can be quite considerable!
Acetone won't do anything to barnacle residue (calcium carbonate). For that, you do need an acid, however I honestly don't know what impact an acid would have on hypalon, which is polyethylene based. It may make the plastic a touch more brittle. Certainly you won't see anything too drastic happening.
If it were my boat i'd give it a go with a fairly dilute solution first - enough to see just a little bit of fizzing......... or ask the manufacturer...........
If you want to get experimental, knock off a few barnacles and stick them in some disposable cups. Mix up a few different concentrations of acid, pour some into each cup (try to get the same no. of barnacles and the same amount of acid in each cup) and let us know what you find!