Withdrawn
Specification of a comparing method, based on the increasing discoloration of polyvinylchloride when exposed to heat, due to a decomposition reaction. Test pieces in diskform are placed between aluminium pieces and heated to the specified test temperature. After specified periods one test specimen at a time is taken out and the degree of discoloration assessed by visual examination or by measuring with a photometer.
WITHDRAWN
ISO 305:1976
WITHDRAWN
ISO 305:1990
95.99
Withdrawal of Standard
May 15, 2019
PUBLISHED
ISO 305:2019
Plastics - Determination of thermal stability of poly(vinyl chloride), related chlorine-containing homopolymers and copolymers and their compounds - Discoloration method (ISO 305:1990)
95.99 Withdrawal of Standard