cleaning keyboards in the dishwasher

[James Fogg]

> I know of no dishwasher detergent that contains chlorine (which is a
> gas) nor large amounts of chlorine-based bleaches.  (Mild) 
> Bleaches and brightners are common in *clothes* detergents 
> where there are good for stain removal, but they're *not* 
> good in dishwashers, where the bleach would tend to fade 
> patterns on crockery.  Therefore dishwasher detergent 
> manufacturers use only very small amounts, if any, and 
> they're usually oxygen-based.

I smell chlorine during the wash cycle and it's not coming from our
private well water, and I had assumed it was in the mix to promote
sanitization as it is for commercial dishwashers used in restaurants. As
for chlorine being a gas, yes it prefers to be a gas at room temperature
and sea level atmospheric pressures, but is released by many different
forms of solid chemicals that disolve in water and release the chlorine
to the water, from which it evaporates into a gas (like for swimming
pool sanitization).
 
> More to the point though, they don't contain silicon dioxide, 
> at least not any I've come across (btw it's silicon, not 
> silicone).  They might feel gritty, but that's not sand, it's 
> solid detergent.  If you dissolve dishwasher detergent (loose 
> powder or a tablet) in a jug of water, it will eventually 
> dissolve completely, leaving no sand behind.
>  Do you think manufacturers would put sand, one of the few 
> common substances that will scour glass, into a substance 
> used for cleaning glassware?

Something in powdered detergents would "sandblast" the previously shiny
surface of the soft plastic handles of our Revereware pots. Liquid
detergents don't cause this problem.