Published on June 2026
New ASTM Standard Defines Recovered Carbon Black
A key piece of market infrastructure arrived with ASTM D8632-25, the classification system for recovered carbon black used in rubber products. It differentiates material using characteristics including inorganic (ash) content and toluene transmittance — the properties that matter most when substituting rCB for part of the virgin carbon black in a compound.
A published, widely recognized standard removes a major adoption barrier: buyers and compounders now have a common language to specify, compare and quality-check recovered material. That is expected to accelerate commercial uptake across rubber, plastics and coatings.
For suppliers and buyers alike, specification is now easier — which is exactly where Carbon Black Sales can help.
Need help matching recovered carbon black to your specification?