4-tert-Butylcatechol (TBC) is an organic chemical compound which is a derivative of catechol.

[1] TBC is available in the form of a solid crystal flake[2] and 85% solution in methanol[3] or water.

[4] It is added as a stabilizer and polymerisation inhibitor to butadiene, styrene,[5] vinyl acetate, divinylbenzene[6] and other reactive monomer streams.

[8] It also can be used as an antioxidant for synthetic rubber, polymers and oil derivatives.

[citation needed] It is 25 times better than hydroquinone at 60 °C for polymerization inhibitory effect.