It's Thursday night and of course for me that means trucking down to home depot to push back a 5 gallon bucket of drywall compound on the hand truck. On the one hand I am so happy that the depot is only about a 20min walk away. Pushing stuff back up the hill (and it is uphill the entire way) can sometimes be a drag. But, as I am not the one feathering the layers as we speak I think it was a fair trade-off.
I read in Michael Polan's book "Omnivores Dilemma" that corn was in everything, including drywall compound. I of course took this as the gospel since it was in print after all. As I was slogging the bucket uphill I got to thinking, "is that true? Exactly what is in drywall compound?" I just read through the ingredients on the bucket and they go a little something like this:
limestone, dolomite, or gypsum
water
mica
vinyl acetate polymer
attapulgite
may contain:
talc
pyrophylite
Now you may wonder why a manufacturer might say "this, this, or this" ingredient. It's less that they don't know at any given moment and more that they use whatever is the cheapest at the time. Rather the constantly reprint labels they just list anything they might use from time to time. This holds true for the manufactured food you eat too. As for the ones listed as "may" these ingrefients are usually reserved for those that act as binding agents (or some such) for the main ingredients that vary given the market price.
Now if your curious mind made you click on each of the ingredients above you will quickly realize that wikipedia (yes I trust it almost 100% these days) says that none of them is corn (hopefully some of you knew that without clicking as well). I would be willing to bet that I have told no less than... oh...100 people that drywall compound has corn in it since I read that book a year or so ago. I'm sure there must be some out there that use some corn starch binder but suffice it to say, I won't think "pot of grits" next time I walk by the stuff at the depot.
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peaches
Posted by: peaches | 2007.02.09 at 16:54
Do your research homework; don't just read the label on the product. Corn starch is used on the manufacture of drywall and the corn producers are very proud of that fact. Those of us who are allergic to corn are acutely aware of it, also.
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