Brownson PLLC Partner Robert D. Brownson has become an invited member of the American Chemical Society (ACS). The American Chemical Society is a global organization with a defined mission to “advance the broader chemistry enterprise and its practitioners for the benefit of the Earth and its people.” With this membership, Bob Brownson, and Brownson PLLC, will compliment the environmental and toxic tort practices through access to ACS resources including over 1 million articles and chapters, and the most trusted, most cited, and most read research in the chemical and related sciences.