NOTE: Crossposted to a couple of lists, please be careful when replying On Tue, Dec 14, 1999 at 08:57:36AM -0500, MacNabb, Elizabeth wrote: > I use one of those salt crystals, and have for about 4 years. I think it's > a really healthy alternative to anything else out there. I wonder if those things are really healthier or whether people just think they are because they appear "natural". (Side note, if I recall correctly, real crystals are often from third world countries with abused workers and environments as a result?) From the scanty info I can find on the web, these things are manufactured from "potash alum". This substance is water soluble and contains aluminium, so doesn't that make it just as bad as aluminium chlorohydrate or whatever is in anti-perspirants? I found a Material Data Safety Sheet for potash alum, it is rather alarming. "Lab Protective Equip: GOGGLES; LAB COAT ... This material hydrolyzes in water to form sulfuric acid, which is responsible for the irritating effects given below. ... Skin Contact: Causes irritation to skin. Symptoms include redness, itching, and pain. ... Skin Contact: Wipe off excess material from skin then immediately flush skin with plenty of water for at least 15 minutes. Remove contaminated clothing and shoes. Get medical attention. Wash clothing before reuse ... Investigated as a reproductive effector." http://www.jtbaker.com/msds/a2856.htm Doesn't sound all that wonderful to me... does anyone know anything more about this? Russell
