what exactly is deionized water?

electrically non-conductive - All water is conductive at least to some extent.

highly chemically reactive - Depending on how it was made, it may be. However, if it is, then it will also be electrically very conductive. Now, I have heard of DI, RO, or distilled water called "hungry". Since the dissolved content is so low, it quickly dissolves items to fill its void. For instance, you can transport normal water in copper pipe, but not RO/DI water. However, this is not a chemical reaction, but a physical reaction.

 

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No running necessary, just lifting silver bars should burn the cals... :mouth:

 

The ions in 'regular' water are what make it VERY electrically conductive. I worked with deionized water in the semiconductor industry for many years and we always considered it to be pretty harsh stuff. I wouldn't bathe in it and I certainly wouldn't drink it. LOL

 

sounds good to me now I just need the gallon of ice and the silver bars?

can anyone "loan" them to me? not the ice cream I think I can find that on my own

 

No water from a typical water softener is not deionized, it has just had an exchange of ions replacing the Calcium and Magnesium in the water with Sodium from the brine tank.

 

And I used to use 10,000 gallons a day of DI water (~2 micro mhos) plus about 15,000 gallons per day of RO water. Like I said, a water softener is making DI water. Last time I checked, there were no law suits for it harming people. In fact, lots of people go out of their way to get "soft" (i.e. low ion content) water. They advertise that it cleans much better. If nothing else, it does rinse you a lot better.

Next time you go to the grocery store, read the labels on their bottled water. I think you will be unpleasantly surprised. People drink that and they are not getting sued either.

 

What do you get if you "make water"?

Like, start with Hydrogen & Oxygen as so many new tech "advances" are hoping for.....
Forget the Hindenburg or the space shuttle and other energy transfer uses.

I mean the clean NEW ways of having water as a waste product?

 

They also replace carbonate, chloride, sulfate, etc. with the hydroxide.

 

In most cases, what you really get is a big waste of energy. Every energy use or transform is less than 100% efficient.

 

King of the Hill, that animated TV show, once poked fun at low flow toilets saying, (paraphrasing) "How can they be low flow and save water and money, when you have to flush twice to get all the business flushed out."

 

Not sure how we got to toilets but King of the Hill got it sooo right.

 

toilets and water, waste of energy/efficiency in clean technology, low flow toilets waste water

 

How interesting that some consider that acetone needs water ( what ever kind) to rinse it off. If you use pure acetone, you just hold the coin vertically and rinse both sides with an acetone flow into a proper container and allow the coin to air dry. If it removes "tone", you didn't have tone to start with ( IMO). If I were to dip a silver coin with Jeweluster ( water based) , I would rinse well with running water ( even tap), and then use an acetone rinse as above, and air dry.

Jim

 

Ultra pure non conductive water is also know as WFI...(Water for Injection) it is used in the Mfg of all human injectable drugs, vaccines, etc etc...@ ~18-18.5 mega Ohms it is considered ultra pure and non conductive.
It is also stored at very high temps to prevent or discourage bacterial growth...some thermophilic bacteria can live in the high temp ranges but none that are common in a laboratory environment.

From a Pharmaceutical standpoint, contamination of a WFI system is often linked to what is commonly referred to as a bio-film lining the internal portions of a stainless steel supply pipe. These inhabitants are mutants that are formed when NH4 and Cl gas is used in disinfection of a water supply, when distilled, they pass through as a distillate and form what is known as a glyco-polysaccharide that formed from the chemical transformation of trihalo-methanes.
I recall doing a study on on this when I worked in a pharmaceutical manufacturing lab for a company called Genzyme Biotherapeutics.

Oh..one other thought, repeated exposure of ionic material to deionized water will lead to leaching of ionic material from the source to the water....this will cause pitting of metal over long periods of time.

Water is a pretty cool thing!!


RickieB

 

A good thought to end this discussion on.

 

Except when heated to make tea, soup, etc.!

A good thought to end this discussion on.

 

I can remember the older car batteries from years ago. The directions were to add distilled water then charge them, Why distilled ?


I also want to say that a Mechanic one told me to add deionized water (insted of tap water) to my antifreeze. Why?

 

Because the dissolved minerals will precipitate out of solution and degrade performance, and possibly block fluid lines.

Here’s a basic web site that will help: http://ga.water.usgs.gov/edu/mwater.html

 

Harry hope this helps some...

Batteries contain acid, using a true pH value of 7 would not potentially dilute or weaken the acid....in other words say your tap water had a value of pH 7.5
that is a 1/2 pH unit making the acid more basic or changing it's pH some what.
Doing this many times over the batteries life would dilute the acid's molarity rendering it ineffective with the reaction to the lead plates.

As for the antifreeze...most anti-freeze is a glycol base or propylene/ethylene glycol the circulation vents in the radiator would be less likely to corrode using DI water.


RickieB

 

Thanks RWB and Rickie B!