TMQ (Trimethyl Dihydroquinoline)

It is brown in color and comes in flake or granule form. It has a relative density of 1.05 and a minimum melting point of 80°C; it is soluble in chloroform, benzene, and acetone; it is sparingly soluble in petroleum hydrocarbons; and it is insoluble in water. It provides protection against oxidative aging in a wide variety of elastomers. It offers long-term stability in rubber and provides long-term resistance to thermal aging in rubber compounds. It inhibits oxidation catalyzed by heavy metals. It moves slowly within the rubber matrix and does not swell. It is used in light compounds; however, while it may cause slight discoloration, it results in minimal staining.