Lowinox AH25 2,5-Di-t-amyl-hydroquinone 79-74-3 Great Lakes Antioxidants >> Phenolic Antioxidants >> Hydroquinone Rubber - Elastomer (Chloroprene, Butyl …) ADHESIVE Lowinox AH25 Phenolic Antioxidant Lowinox AH25 is an excellent non-staining and non-discoloring stabilizer, based on sterically hindered dihydroxybenzene. Lowinox AH25 exhibits excellent protection against oxygen and sun crack. It is recommended for unvulcanized rubber adhesives, tapes and films. Lowinox AH25 prevents the loss of tack of unvulcanized rubber and reduces the cold flow. Very good, non-staining and non-discoloring, sterically hindered dihydroxybenzene antioxidant. Used for unvulcanized rubber adhesives. Provides very good protection against oxygen and sun crack. Offers prevention to loss of tack of unvulcanized rubber. Reduces cold flow.