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Chloroprene (2-chlor-1,3-butadiene)

Where is it Commonly Found?

Weather-stripping, expansion joint filler, seals, adhesives, sealants and flashing
Suspected respiratory, blood, and liver toxicant (EPA).

What are its known health effects?

Carcinogen (P65)

What are its suspected health effects?

Alternative Materials

For gasketing, fillers, and weather-stripping, silicone, TPO, and ethylene propylene diene M (EPDM).

Additional Regulatory Information

On at least 5 federal regulatory lists

Does it Correspond With Any Green Building Credits?

Living Building Challenge (1.2) - Prerequisite 5;
Green Guide for Health Care - MR Credit 4.1- PBT Elimination: Dioxins;
Green Guide for Health Care - CM 1.1: Community Contaminant Prevention: Airborne releases;
Living Building Challenge 1.3 – Prere

How is it Categorized?

Chlorinated Polymers

What is its Origin?

On at least 5 federal regulatory lists

Chloroprene is the common name for the organic compound 2-chloro-1,3-butadiene. It was america's first successful synthetic rubber. It was originally developed as an oil-resistant substitute for natural rubber. Chloroprene better known as chloroprene rubber (CR) or by the brand name of "Neoprene".

Divisions and Sections

Div 07 Joint Sealants

Div 08 Glazing

General Reference