White vinegar is acetic acid, and of higher concentration than the brown sort and is also widely available. Would that be any good for pickling at all? I know that the vinegar in sauce and ketchup cleans copper coins up beautifully from when I was a kid. Tony Wells. ----- Original Message ----- From: "Jeff Dayman" <jeffdayman@xxxxxxxxxxxx> To: <modeleng@xxxxxxxxxxxxx> Sent: Thursday, February 02, 2006 12:23 PM Subject: [modeleng] Re: pickling acids suppliers > Hi Dave, > > Can't help you with an exact source, but can give some ideas as to who > uses > H2SO4 commercially. > > -forklift truck battery service and sales firms > -some car garages still have it for car batteries > -stove/fireplace foundries, sheetmetal shops and ironworks use it for > cleaning castings and steel sheet > -chemical supply firms should have it. > > On this list I remember pickling has come up several times and citric acid > was mentioned as easier to get than sulfuric, and works nearly as well. > Brewers and brewery/winemaking supply firms will have citric acid. > > Good luck, Jeff Dayman Waterloo Ontario Canada MODEL ENGINEERING DISCUSSION LIST. To UNSUBSCRIBE from this list, send a blank email to, modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject line.