The Determination of the Water Content of the Low Polymers of Formaldehyde by the Karl Fischer Method. I. The Determination of the Adsorbed Water and Bound Water Formed by the Pyrolysis of the Polymer

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概要

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• The adsorbed water of the low polymer of formaldehyde was determined by extraction with dry methanol and Karl Fischer titration. The sum of the adsorbed water and the water formed by the pyrolysis of the sample was determined by titration with the specially prepared Karl Fischer reagent SS, after the sample had been dissolved in propylene glycol by heating. The method of the separation and the determination of the two kinds of water was thus established. When the average numerical degree of polymerization of the polymers was calculated from the content of bound water determined by this method, satisfactory results were obtained. To verify the accuracy of the determination of water content, formaldehyde and methanol were determined independently; their sum was found to be almost 100%.

• 社団法人 日本化学会の論文

著者

• Muroi Kaname

  Central Research Laboratory Mitsubishi Chemical Industries Ltd.

• Muroi K.

  Central Research Laboratory Mitsubishi Chemical Industries Ltd.

• Ogawa Kunihiko

  Central Research Laboratory Mitsubishi Chemical Industries Ltd.

関連論文

• The Determination of the Water Content of the Low Polymers of Formaldehyde by the Karl Fischer Method. I. The Determination of the Adsorbed Water and Bound Water Formed by the Pyrolysis of the Polymer

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