Frequently Asked Questions

Recovered carbon black is the carbon-rich solid recovered when end-of-life tyres are broken down by pyrolysis, then freed of steel and fibre and milled to a usable grade. Under ASTM D8178 the term applies only to material processed in this way — untreated pyrolysis char is a different product and should not be described as rCB. It functions as a semi-reinforcing filler and pigment in place of virgin carbon black.

rCB is made from recycled materials and has a lower carbon footprint, whereas virgin carbon black is derived from non-renewable fossil fuels.

rCB is produced by pyrolysis of end-of-life tyres or other rubber products, which breaks down the rubber into usable carbon black and other byproducts.

Industries like automotive, rubber manufacturing, rubber moulding, extrusion, construction, plastics, inks, and coatings can benefit from using GoGreen Eternal rCB.

In semi-reinforcing applications — moulded goods, mats, hoses, extrusions, masterbatch — GoGreen Eternal rCB performs comparably to equivalent virgin grades. In highly reinforcing applications such as tyre tread, it is normally used as a partial replacement alongside virgin black, with the loading established through trials. We support qualification with samples, technical data and formulation input so the right replacement level is proven on your line rather than assumed.

The main differences are compositional. rCB carries residual inorganic content — principally silica and zinc oxide from the original rubber formulation — which shows up as higher ash than virgin black. In many compounds this is neutral or even useful, since those inorganics are fillers you would otherwise add. Batch-to-batch consistency is the metric that matters most in practice, and every GoGreen Eternal batch is tested before dispatch with a certificate of analysis issued against it.

Yes, GoGreen Eternal rCB can be blended with virgin carbon black to achieve desired performance characteristics in various formulations.

In semi-reinforcing compounds, GoGreen Eternal rCB maintains tensile strength, elongation at break and abrasion resistance within the range obtained from equivalent virgin grades, subject to correct compounding. Where the base formulation relies on a reinforcing furnace black, substitution is normally partial, with loading adjusted in phr and, where required, minor correction to the cure system to account for the residual inorganic and zinc oxide content of rCB. Property retention is established by compound trial against your existing specification.

Jetness and tint strength depend on the grade selected. For rubber and plastics, where the requirement is a consistent black masterbatch or compound, the standard powder and granule grades perform as expected. For paints, coatings and inks, where jetness and colour development are the governing criteria, we supply dedicated paint grades — E425 and E427 — pre-milled for solvent- and water-based systems. Grade selection against your existing colour standard is the practical starting point, and drawdown samples are available for comparison.

GoGreen Eternal rCB can be processed using the same equipment and methods as virgin carbon black, with minimal adjustments needed.

While GoGreen Eternal rCB is very versatile and can be used in many applications, some specific formulations may require managing proportions of virgin carbon black.

rCB is semi-reinforcing, so compounds built around a highly reinforcing furnace black generally use it as a partial rather than complete replacement. Residual inorganic content means ash is higher than virgin black, which matters in applications with tight compositional limits. Both are managed through formulation adjustment established at trial stage, and neither prevents use — they determine the replacement level rather than the suitability.

ASTM D8178 provides standard terminology for recovered carbon black, and established ASTM carbon black test methods apply to rCB characterisation. GoGreen Eternal rCB is tested against the ASTM carbon black method series by independent NABL- and ISO/IEC 17025-accredited laboratories, alongside RoHS and REACH SVHC screening. Full test reports are available on request.

Ask any supplier for batch-level test data rather than a one-off specification sheet, and confirm the testing is done by an accredited laboratory. GoGreen Eternal is manufactured under ISO 9001 and ISO 14001 certified systems, with every batch tested before dispatch and a certificate of analysis issued against it. Independent verification is available through RoHS and REACH SVHC screening and full ASTM characterisation by NABL- and ISO/IEC 17025-accredited laboratories, and those reports are supplied on request.

Particle size varies by grade — the range runs from coarse powder (E212) through standard powders (E312, E412, E422) to pelletised granules (E332, E432), each suited to different processing routes. Exact figures for each grade are published in the technical data sheets on our Grades & TDS page.

GoGreen Eternal rCB typically has a similar shelf life to virgin carbon black, but it should be stored in a dry, cool environment to maintain quality.

GoGreen Eternal rCB is typically lower in cost per kg than equivalent virgin carbon black grades. Actual savings depend on the grade selected, the loading level in your formulation and order volume, so the fairest comparison is cost-in-use rather than headline price. Share your current grade and consumption and we can work through the comparison with you.

Supply across the rCB sector is uneven, and batch consistency does differ between producers — which is why qualification of the supplier matters as much as qualification of the material. GoGreen Eternal is produced at our Haridwar facility with annual capacity above 11,500 MT, under ISO 9001 and ISO 14001 certified systems, with every batch tested before dispatch and a certificate of analysis issued against it. Volumes are available for continuous supply contracts as well as trial quantities.

Trial quantities are available so a compound can be qualified before any commitment to regular supply. For commercial orders, minimum quantity depends on the grade and delivery location — domestic and export volumes differ. Share your target grade and location and we will confirm what applies.

Powder and granule grades are supplied in bagged form, with bulk packing available for regular offtake. Packing configuration is confirmed at order stage against your handling and storage arrangements. Material should be kept dry and covered in transit and in store.

Every dispatch is accompanied by a certificate of analysis for the batch. Technical data sheets and the safety data sheet are available for all grades, along with RoHS and REACH SVHC test reports, ASTM characterisation data and ISO 9001 and ISO 14001 certificates. Customer-specific declarations for automotive qualification can be issued on request.

Contact us with your application, current grade and target volume, and we will recommend a grade and arrange a sample for trial. Technical support is available through the qualification process, including formulation input where a compound needs adjustment.

Logistics depend on the buyer’s location, but GoGreen Eternal rCB is available in bulk quantities and can be shipped globally.

GoGreen Eternal rCB carries approximately 75% lower carbon intensity per kg than virgin carbon black, quantified to ISO 14064-1:2018 using IPCC emission factors. Because the feedstock is end-of-life tyres rather than fossil oil, each tonne used diverts tyre waste from landfill and open burning while displacing petroleum-derived material.

Switching to rCB reduces the embedded carbon in your own products, so it shows up directly in Scope 3 emissions reporting and in sustainable-procurement or recycled-content targets. It also supports circular-economy commitments, since the raw material is diverted from end-of-life tyres rather than fossil feedstock. Note this is a procurement and operational sustainability measure — it is distinct from statutory CSR spending under Section 135 of the Companies Act, 2013, which covers designated social-welfare activities.

In India, Extended Producer Responsibility for waste tyres operates under the Hazardous and Other Wastes (Management and Transboundary Movement) Rules, 2016, which places recovery obligations on tyre producers and importers and has formalised demand for recovered materials including rCB. For customers exporting into the EU, recycled content and end-of-life recovery requirements apply through vehicle and packaging legislation, and buyers increasingly carry their own recycled-content and Scope 3 commitments. GoGreen Eternal supplies the documentation needed to evidence recovered-material content in your own reporting.

Products made with GoGreen Eternal rCB are equally recyclable, supporting the overall goal of a circular economy.