Registration Dossier

Diss Factsheets

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Biodegradation:

Biodegradation in water:

Biodegradability of test chemical Xanthylium, 9-(2-carboxyphenyl)-3,6-bis(diethylamino)-, molybdatetungstatephosphate (CAS no. 1326-03-0) was estimated by using OECD QSAR tool box v3.3 by considering five closest read across chemical log Kow as primary descriptor. Percent biodegradation of the test chemical Xanthylium, 9-(2-carboxyphenyl)-3,6-bis(diethylamino)-, molybdatetungstatephosphate was estimated to be 0.91 % by considering BOD as parameter and Microorganism as inoculum in 28 days. On the basis of percent degradability value it can be concluded that test chemical Xanthylium, 9-(2-carboxyphenyl)-3,6-bis(diethylamino)-, molybdatetungstatephosphate is not readily biodegradable.

Additional information

Biodegradation:

Biodegradation in water:

Predicted data study for target chemical Xanthylium, 9-(2-carboxyphenyl)-3,6-bis(diethylamino)-, molybdatetungstatephosphate (CAS no. 1326-03-0) and two experimental studies for its read across chemicals have been conducted and their results are summarized below for biodegradation in water endpoint.

In a predicted data study the biodegradability of test chemical Xanthylium, 9-(2-carboxyphenyl)-3,6-bis(diethylamino)-, molybdatetungstatephosphate (CAS no. 1326-03-0) was estimated by using OECD QSAR tool box v3.3 by considering five closest read across chemical log Kow as primary descriptor. Percent biodegradation of the test chemical Xanthylium, 9-(2-carboxyphenyl)-3,6-bis(diethylamino)-, molybdatetungstatephosphate was estimated to be 0.91 % by considering BOD as parameter and Microorganism as inoculum in 28 days. On the basis of percent degradability value it can be concluded that test chemical Xanthylium, 9-(2-carboxyphenyl)-3,6-bis(diethylamino)-, molybdatetungstatephosphate is not readily biodegradable.

Next study was experimental study done from authoritative database (J check, 2017) in this study biodegradation experiment was conducted for 28 days for evaluating the percentage biodegradability of read across substance C.I. Solvent Red 49 (CAS no. 509 -34 -2). Concentration of inoculum i.e, sludge used was 30 mg/l and initial read across substance conc. used in the study was 100 mg/l. The percentage degradation of read across substance was determined to be 0 and 1% degradation by BOD, TOC removal and HPLC in 28 days.  Thus, based on percentage degradation, C.I. Solvent Red 49 was considered to be not readily biodegradable in nature.

Another experimental study was also done from same authoritative database (J check, 2017) in this study Biodegradation experiment was conducted to determine percent degradation of read across chemical Rhodamine B for 4 weeks. Concentration of inoculum i.e, sludge was 30 mg/l and initial read across substance conc. used in the study was 100 mg/l, respectively. The percentage degradation of read across substance is determined to be 0, 2 and 7% degradation by BOD, TOC removal and UV-Vis parameter in 28 days. Thus, based on percentage degradation, substance Rhodamine B is considered to be not readily biodegradable in nature.

On the basis of all the studies mentioned above for target chemical Xanthylium, 9-(2-carboxyphenyl)-3,6-bis(diethylamino)-, molybdatetungstatephosphate (CAS no. 1326-03-0) and it’s read across chemicals it can be concluded that test chemical Xanthylium, 9-(2-carboxyphenyl)-3,6-bis(diethylamino)-, molybdatetungstatephosphate  is not readily biodegradable.

Categories Display