This pamphlet is intended to provide information to producers, users, and handlers of chlorine and/or 50% sodium hydroxide concerning the compatibility of these two substances with a variety of materials and their reactivity with other chemicals. The information considers only those materials and chemicals typically found in facilities producing, using, or otherwise handling chlorine and/or sodium hydroxide and is not meant to be an exhaustive list.

Users of this pamphlet might include persons responsible for operations and maintenance, hazards analyses, and/or emergency response of facilities producing, using or otherwise handling chlorine and/or sodium hydroxide.

This pamphlet is not intended to provide detailed technical information needed by process engineers nor is it intended to provide economic evaluations of compatible materials. While the information provided should be of help to emergency responders, this pamphlet is not intended to provide technical guidance to the first persons on the scene in an emergency response. This pamphlet does not address nitrogen trichloride. CI Pamphlet 152 (4.1) provides a full discussion of this topic.