Stir paddle tarnished in StarSan - Home Brew Forums

Register Now!
Home Brew Forums > Home Brewing Beer > Equipment/Sanitation > Stir paddle tarnished in StarSan

Reply
 
Thread Tools
Old 01-19-2013, 11:21 PM   #1
Toy4Rick
Recipes 
 
May 2011
Oceanside, Ca
Posts: 396
Liked 15 Times on 13 Posts



Hey gang,

I bought a plastic stir paddle to aerate my wort, it has an aluminum shaft and after being the StarSan for about 2 hours, the shaft is now black. It has a metallic smell to it.

Can/should I clean it off. If so with what
Will it hurt anything

Toy4Rick
__________________
If I can't ride it... 1997 Goldwing
If I can't shoot it... PX4 Storm, Browning Buckmark, S&W 357, Ruger 10-22
or drink it... my Homebrew

Why bother

 
Reply With Quote
Old 01-19-2013, 11:31 PM   #2
schooner427
Recipes 
 
Dec 2012
Posts: 44
Liked 4 Times on 4 Posts


Aluminum is a reactive metal that when comes into contact with acid can begin to dissolve. You may want to get a different paddle. The more concentrated the solution the more violent the reaction. If the aluminum is coated it may take awhile to see any reaction at all.

 
Reply With Quote
Old 01-19-2013, 11:40 PM   #3
schooner427
Recipes 
 
Dec 2012
Posts: 44
Liked 4 Times on 4 Posts


Oh and I wouldn't use the paddle, if I remember right the aluminum turns to aluminum chloride, the acid begins to create hydrogen gas. The paddle was probably bare and had no oxidation on the surface or any other protective coating

 
Reply With Quote
Old 01-21-2013, 12:41 AM   #4
vNmd
HBT_SUPPORTER.png
 
vNmd's Avatar
Recipes 
 
Jan 2013
, Maryland
Posts: 722
Liked 168 Times on 109 Posts


I left my carboy brush in a carboy with starsan for a while and I guess the metal for the brush is aluminum because it started turning colour too. I am learning

 
Reply With Quote
Old 01-21-2013, 02:14 AM   #5
mpcluever
Recipes 
 
Jun 2010
here
Posts: 635
Liked 39 Times on 34 Posts


Aluminum boil kettles turn black with use. I would think it would be fine.

 
Reply With Quote
Old 01-21-2013, 02:00 PM   #6
patthebrewer
Recipes 
 
Sep 2012
, allenwood, nj
Posts: 688
Liked 56 Times on 49 Posts


Yeah you cant use aluminum with starsan...the acid eats the aluminum. Found that out the hard way using a carboy brush made of aluminum once. I believe there are other sanitizers you CAN use that don't do that.
__________________
Manasquan River Brewing LLC

 
Reply With Quote
Old 01-22-2013, 01:18 AM   #7
schooner427
Recipes 
 
Dec 2012
Posts: 44
Liked 4 Times on 4 Posts


Aluminum kettles turn black because of a different chemical process. Its just plain oxidation. Star San is an acid that deteriorates the metal itself. It actually creates hydrogen gas by trading off molecular structure of the aluminum.

 
Reply With Quote


Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Kegs, pot/burner, flask/stir plate, 1 gallon StarSan, and more equipment adx For Sale 6 01-07-2013 12:41 PM
Stir paddle HoshBrew DIY Projects 3 12-15-2011 06:44 AM
need advice on stir paddle for HLT bblack7489 DIY Projects 13 09-09-2010 11:31 AM
Tarnished Batch??? MConnelly Beginners Beer Brewing Forum 8 02-13-2010 06:11 PM


Forum Jump