scope:

INTRODUCTION

This PPI Technical Note focuses on the application of chlorine dioxide within buildings and its potential effects on the following plastic hot- and cold-water plumbing distribution pipe materials:

• CPVC: chlorinated polyvinyl chloride

• PEX: crosslinked polyethylene

• PE-RT: polyethylene of raised temperature resistance

• PP-R: polypropylene random copolymer

• PP-RCT: polypropylene random copolymer with modified crystallinity & temperature resistance

Currently, limited North American industry data is publicly available to predict the impact that chlorine dioxide may have on specific plumbing distribution pipe materials. This Technical Note addresses this topic based on data that has been collected through an extensive analysis of published research combined with the experience and expertise of PPI members.