RECYCLED CARBON BLACK, MIXTURE OF RECYCLED CARBON BLACK AND LIQUID POLYMER, RUBBER COMPOSITION, AND RUBBER PRODUCT

To address a problem of providing recovered carbon black capable of maintaining the physical properties of a rubber composition even when reused in the rubber composition, and also providing a mixture of such recovered carbon black and a liquid polymer, a solution is: recovered carbon black obtained by decomposition of crosslinked rubber containing diene rubber and carbon black, wherein an organic component remaining in the recovered carbon black after toluene washing is 5 mass% or more; and a mixture of such recovered carbon black and a liquid polymer, wherein the liquid polymer has a weight-average molecular weight of 300,000 or less.