Chemical Reactivity Worksheet
Photo: Several rail cars partially submerged in a creek.
A train derailment in Paulsboro, N.J. in November 2012 released 23,000 gallons of toxic vinyl chloride gas. (NOAA)

The Chemical Reactivity Worksheet (CRW) is a software program you can use to find out about the chemical reactivity of thousands of common hazardous chemicals.

Learn more about the CRW and download the program.

For nearly 20 years, the CRW was developed jointly by NOAA's Office of Response and Restoration (OR&R) and the Environmental Protection Agency (EPA). Other organizations, such as the Center for Chemical Process Safety (CCPS), also began to collaborate on the development of the CRW in recent years.

With the release of CRW 4.0 in March 2016, the ongoing management and distribution of the CRW has been transitioned to CCPS. Additionally, NOAA and EPA will continue to publish their reactivity information in CAMEO Chemicals, a related website and desktop tool for emergency responders and planners.
Questions: Direct questions about CRW 4.0 to the CCPS specialist.