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<p>This International Standard describes two methods for the determination of free formaldehyde (HCHO) in polymer</p>
<p>dispersions. The procedure has been evaluated using acrylic, acrylonitrile butadiene, carboxylated styrenebutadiene</p>
<p>and vinyl acetate polymer dispersions. Both test methods may also be applicable to polymer dispersions</p>
<p>of other compositions.</p>
<p>Method A is the preferred method for polymer dispersions with a free-formaldehyde content higher than .</p>
<p>Method B is recommended if lower formaldehyde contents have to be determined or arbitration analyses have to be</p>
<p>carried out.</p>
<p>Both methods minimize changes in free-formaldehyde concentration that can result from changes in the physical or</p>
<p>chemical properties of polymer dispersions.</p>
<p>There are no known limitations to these methods when used in the manner described.</p>
Reģistrācijas numurs (WIID)
83774
Darbības sfēra
<p>This International Standard describes two methods for the determination of free formaldehyde (HCHO) in polymer</p>
<p>dispersions. The procedure has been evaluated using acrylic, acrylonitrile butadiene, carboxylated styrenebutadiene</p>
<p>and vinyl acetate polymer dispersions. Both test methods may also be applicable to polymer dispersions</p>
<p>of other compositions.</p>
<p>Method A is the preferred method for polymer dispersions with a free-formaldehyde content higher than .</p>
<p>Method B is recommended if lower formaldehyde contents have to be determined or arbitration analyses have to be</p>
<p>carried out.</p>
<p>Both methods minimize changes in free-formaldehyde concentration that can result from changes in the physical or</p>
<p>chemical properties of polymer dispersions.</p>
<p>There are no known limitations to these methods when used in the manner described.</p>
