Plastics. Polyols for use in the production of polyurethane. Determination of degree of unsaturation by microtitration Ingestion-build-109673 BS 1132 on Automatic pipettes

BS 1132 on Automatic pipettes is useful for:

cables and their accessories

and polyethylene troughs

BS EN 60728-11:2017+A11:2018 supersedes BS EN 60728-11:2017

Plastics. Polyols for use in the production of polyurethane. Determination of degree of unsaturation by microtitration Ingestion-build-109673 BS 1132 on Automatic pipettes1 Scope This International Standard specifies a microtitration method to measure the degree of unsaturation in polyether polyols used in the production of polyurethanes. It is based on the reaction of mercuric acetate with double bonds in the polyol. It does not apply to compounds in which the unsaturation is conjugated with carbonyl, carboxyl or nitrile groups. The product being measured must be essentially dry and free of inorganic salts, especially