Determination Method for Triethylene Glycol Diisooctanoate (3GO) Content in Polyvinyl Butyral (PVB) Films

This document applies to the determination of triethylene glycol diisooctanoate (3GO) content in polyvinyl butyral (PVB) films. It specifies the use of gas chromatography and sets out requirements for the determination principle, reagents, instruments and equipment, test conditions, test procedures, method detection limit, permissible difference, and test reports. Relevant testing laboratories and PVB film manufacturers and users may use this document to establish or validate methods for determining 3GO content, prepare the required reagents and instruments, conduct testing under the specified conditions, and prepare test records and reports as required.