Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Discussion (screening testing)

Although not ready biodegradable, the profile of the biodegradation for the test substance when enhanced with Tween surfactant and a GF/C paper support was similar to that for the test substance without enhancement measures. However, the extent of the degradation was increased by about 26% (to 68.3%), and exceeded the 60% threshold after 28 days. Using the surface area enhancement measures as described, CNSL Distillation residue is considered to be potentially ultimately biodegradable. However, it should be noted that as the test substance is a mixture, different rates of degradation may occur under realistic conditions.

Discussion (simulation testing)

In accordance with Column 2 of REACH Annex IX, simulation testing does not need to be conducted as Cashew Nutshell Extract, Decarboxylated Distillation Residue (Distillation Residue Grade) was found to be potentially ultimately biodegradable in a robust OECD Guideline 310 (Ready Biodegradability - CO2 in Sealed Vessels (Headspace Test). The study indicated that 68.3% of the test substance was degraded within 28 days.

Additional information