Ode Coyote wrote:
At 01:08 PM 3/28/2007 -0400, you wrote:


Respected Ode Coyote

Thank you for this help.
Just this: Explain please, to the poor Dutch retired teacher (of English, yeah!) and his Spanish-speaking wife:

What is Wood ash?

 ##  It's that grey dusty stuff left over from burning wood.
Very alkaline.
 Some pet foods have some added, listed on the label as "ash content".
No, they don't add it. They burn the food, and what is left is the ash content. It is a crude measure of the amount of minerals in the food, just like where they list things like fat, carbohydrates and all, it is simply part of what is in the food.
Might not be a great thing as a diet, contains some sodium hydroxide and is a bit abrasive. [Drain cleaner with those scrubbing bubbles? ]

The sodium that is in food is not normally in the form of sodium hydroxide, it is in such forms as sodium carbonate, sodium bicarbonate and so forth. If you burn the food, reducing it to ash, then the CO2 or other radicals are driven off reducing it to sodium hydroxide. Thus reduced ash has much sodium hydroxide, but the ash content of normal food that is unadulterated has very little, or in fact if the food is acid, none.

Marshall



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