First for those who dont know what Chealting agents are, here is a brief defination:<div><br></div><div><span style="font-family:sans-serif;font-size:13px;line-height:19px;background-color:rgb(255,255,255)">Chelants, according to </span><a target="_top" href="http://en.wikipedia.org/wiki/ASTM" title="ASTM" class="mw-redirect" style="text-decoration:none;color:rgb(11,0,128);background-image:none;background-color:rgb(255,255,255);font-family:sans-serif;font-size:13px;line-height:19px">ASTM</a><span style="font-family:sans-serif;font-size:13px;line-height:19px;background-color:rgb(255,255,255)">-A-380, are &quot;chemicals that form soluble, complex molecules with certain metal </span><a id="FALINK_2_0_1" class="FAAdLink" href="http://en.wikipedia.org/wiki/Chelation#" style="color:rgb(243,91,0)!important;background-image:none;background-color:transparent!important;border-bottom-color:rgb(243,91,0)!important;border-bottom-style:solid!important;border-bottom-width:1px!important;padding-bottom:1px!important;display:inline!important">ions</a><span style="font-family:sans-serif;font-size:13px;line-height:19px;background-color:rgb(255,255,255)">, inactivating the ions so that they cannot normally react with other elements or ions to produce precipitates or scale.&quot;</span> </div>
<div><br></div><div>I otherwords, it would tie up metals such as iron.  I doubt 409 or windex has them.  You can request an MSDS and see for sure. look for a chemical called EDTA<br><br><div class="gmail_quote">On Tue, Mar 20, 2012 at 8:03 PM, Michael and Tammy <span dir="ltr">&lt;<a target="_top" href="mailto:daci6537@comcast.net">daci6537@comcast.net</a>&gt;</span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><u></u>



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<div><font face="Calibri">Does anyone know if 409 stone cleaner or windex stone 
cleaner has any chelating agent in them?</font></div>
<div><font face="Calibri"></font> </div>
<div><font face="Calibri">Thanks </font></div>
<div><font face="Calibri">Mike</font></div>
<div><font face="Calibri">Marble Plus</font></div><hr>
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</blockquote></div><br><br clear="all"><div><br></div>-- <br><img src="http://www.stoneforensics.com/stone-detective.png" width="200" height="129"><div>Frederick M. Hueston PhD<br><a target="_top" href="http://www.stoneforensics.com" target="_blank">www.stoneforensics.com</a><br>
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