Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Administrative data

Link to relevant study record(s)

Description of key information

Key value for chemical safety assessment

Additional information

3,6-bis(4-chlorophenyl)-2,5- dihydropyrrolo-[3,4 -c]pyrrol-1,4-dione was investigated for absorption, distribution and excretion after a single gavage application in rats (RCC 1992). The study was performed under GLP and followed the principles outlined in OECD testing guideline 417.

14C-labelled test compound was administered at two target dose levels of 100 mg/kg (low dose) and 1000 mg/kg (high dose) to male rats and radioactivity appearing in urine, feces, blood/plasma and organs/tissues was measured for various intervals up to 168 hours. In plasma, values which exceeded the limit of quantitation by less than 1.5fold were found around 2h after dosing. This is considered to related to the 0.2% extractable radioactive impurity in the test material and not to indicate uptake of the pigment.

At both dose levels minimal amounts (<0.6% of the total dose) were excreted via the urine. This was considered to be caused by contamination with feces, but it may also be related to the radioactive impurity in the test material. Excretion of 14C-labelled pigment proceeded exclusively via the feces and amounted after 168 hours, on average, to 119.7 % and 96.0 % at the low and high dose level, respectively.

14C-3,6-bis(4-chlorophenyl)-2,5- dihydropyrrolo-[3,4 -c]pyrrol-1,4-dione is not bioavailable after single oral administration to rats.