2,6-di-tert-butylphenol appears as odorless colorless to light yellow solid or liquid. Floats on water. Freezing point is 97°F. (USCG, 1999) 2,6-di-tert-butylphenol is a member of the class of phenols carrying two tert-butyl substituents at positions 2 and 6. It has a role as an antioxidant. It is a member of phenols and an alkylbenzene.