The Savannah River Site (SRS) tank farms contain the accumulated high-level radioactive waste from almost 50 years of site operations. This document summarizes information from waste analyses and chemical usage records related to organic compounds that have been sent to the tank farms. Information on potential decomposition products from the original organic compounds is also included. This information is pertinent to the caustic side solvent extraction (CSSX) process planned for decontaminating the liquid waste before disposal in Saltstone. Certain classes of organic compounds can interfere with the extraction process.