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Homepage>ISO 119:1977-Plastics — Phenol-formaldehyde mouldings — Determination of free phenols — Iodometric method
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sklademVydáno: 1977
ISO 119:1977-Plastics — Phenol-formaldehyde mouldings — Determination of free phenols — Iodometric method

ISO 119:1977

ISO 119:1977-Plastics — Phenol-formaldehyde mouldings — Determination of free phenols — Iodometric method

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Označení normy:ISO 119:1977
Počet stran:2
Vydání:1
Vydáno:1977
DESCRIPTION

ISO 119:1977


A semiquantitative method for the determination of the amount of free phenols in phenolic mouldings. Hot water extraction of free phenols from a powdered test portion, iodination of the water extract and backtitration of the excess of iodine with standard volumetric thiosulfate solution.
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