TCI C0684 4-alpha-Cumylphenol (CAS 599-64-4) is a para-substituted phenol carrying a bulky cumyl group. It is best known as a chain terminator in polycarbonate synthesis, where its single phenolic group helps control polymer molecular weight. Beyond polymer work, it serves as an intermediate for resins, nonionic surfactant precursors, and specialty additives. The compound is supplied in 25 g and 500 g packs to suit both laboratory research and larger polymerisation experiments.
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