Plastics. Polymer dispersions. Determination of free formaldehyde Ingestion-build-67170 Nationally Determined Parameters specified in

Nationally Determined Parameters specified in NA to BS EN 1992-4 recognizes the responsibility of regulatory authorities

Test sieves of metal wire cloth having aperture sizes below 4 mm down to 0

ISO 719 describes the classification method of glass according to the consumption of acid and its equivalent of alkali [sodium oxide (Na2O)]

Manufacturers of electronic semiconductor devices

Metal and iron ore industry

Plastics. Polymer dispersions. Determination of free formaldehyde Ingestion-build-67170 Nationally Determined Parameters specified in1 Scope This International Standard describes two methods for the determination of free formaldehyde (HCHO) in polymer dispersions. The procedure has been evaluated using acrylic, acrylonitrile butadiene, carboxylated styrenebutadiene and vinyl acetate polymer dispersions. Both test methods may also be applicable to polymer dispersions of other compositions. Method A is the preferred method for polymer dispersions with a free formaldehyde content