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ISO 182-1:1990

Current Revision

Plastics - Determination of the tendency of compounds and products based on vinyl chloride homopolymers and copolymers to evolve hydrogen chloride and any other acidic products at elevated temperatures - Part 1: Congo red method

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Intended primarily as a simple and rapid quality-control test during the manufacture and conversion of PVC compounds. Suitable for coloured compounds. Is not recommended for compounds in the form of dry blends. The determination is carried out on a sample of the PVC compound which is maintained at an agreed temperature in still air until the colour of a Congo red paper held above it changes from red to blue. If universal indicator paper is used, the colour change is that corresponding to pH 3. The time required for the colour change is taken to be the stability time, ts. Together with ISO 182-2, replaces and cancels ISO Recommendation R 182:1970.


SDO ISO: International Organization for Standardization
Document Number ISO 182
Publication Date Not Available
Language en - English
Page Count
Revision Level
Supercedes
Committee ISO TC 61/SC 6
Publish Date Document Id Type View
Not Available ISO 182-1:1990 Revision