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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Adsorption / desorption

From CompTox Chemistry Dashboard using OPERA (OPEn (quantitative) structure-activity Relationship Application)  V1.02 model (2017) in which calculation based on PaDEL descriptors (calculate molecular descriptors and fingerprints of chemical), the adsorption coefficient i.e KOC for test substance N-phenyl-4 -[[4 -(phenylamino)phenyl][4 -(phenyl imino)cyclohexa- 2,5 -dien-1 -ylidene]methyl]aniline monohydrochloride was estimated to be 131000 L/kg (log Koc = 5.117).The predicted KOC result based on the 5 OECD principles. This Koc value indicates that the substance N-phenyl-4-[[4-(phenylamino)phenyl][4-(phenylimino)cyclohexa-2,5-dien-1-ylidene]methyl]aniline monohydrochloride has a very strong sorption to soil and sediment and therefore have negligible migration potential to ground water.

Additional information

Adsorption / desorption

Predicted data for the target compound N-phenyl-4-[[4-(phenylamino)phenyl][4-(phenylimino)cyclohexa-2,5-dien-1-ylidene]methyl]aniline monohydrochloride(CAS No. 2152-64-9) and supporting weight of evidence study for its read across substance were reviewed for the adsorption end point which are summarized as below:

 

From CompTox Chemistry Dashboard using OPERA (OPEn (quantitative) structure-activity Relationship Application)  V1.02 model (2017) in which calculation based on PaDEL descriptors (calculate molecular descriptors and fingerprints of chemical), the adsorption coefficient i.e KOC for test substance N-phenyl-4 -[[4 -(phenylamino)phenyl][4 -(phenylimino)cyclohexa- 2,5 -dien-1 -ylidene]methyl]aniline monohydrochloride (CAS no. 2152-64-9) was estimated to be 131000 L/kg (log Koc = 5.117).The predicted KOC result based on the 5 OECD principles.

 

In a supporting weight of evidence study from authoritative database (HSDB, 2017) for the read across chemical (4 -(4,4'-Bis(dimethylamino)benzhydrylidene)cyclohexa-2,5 -dien-1 -ylidene)dimethylammonium, chloride (CAS no. 548-62-9), adsorption experiment was conducted for estimating the adsorption coefficient (Koc) value of read across chemical (4 -(4,4'-Bis(dimethylamino)benzhydrylidene)cyclohexa-2,5 -dien-1 -ylidene) dimethylammonium, chloride. The adsorption coefficient (Koc) value was calculated using a structure estimation method based on molecular connectivity indices. The adsorption coefficient (Koc) value of substance (4 -(4,4'-Bis(dimethylamino)benzhydrylidene)cyclohexa-2,5 -dien-1 -ylidene)dimethylammonium, chloride was estimated to be 610000 (Log Koc = 5.785).

 

On the basis of above overall results for target chemicalN-phenyl-4-[[4-(phenylamino)phenyl][4-(phenylimino)cyclohexa-2,5-dien-1-ylidene]methyl]aniline monohydrochloride(from EPI suite,2017) and for its read across substance (from authoritative database HSDB, 2017), it can be concluded that the Koc value of test substance N-phenyl-4 -[[4 -(phenylamino) phenyl][4 -(phenylimino)cyclohexa-2,5-dien-1-ylidene]methyl]aniline monohydrochloridewas estimated to be 131000 L/kgindicating that the test chemical N-phenyl-4 -[[4 -(phenyl amino)phenyl][4 -(phenylimino)cyclohexa-2,5-dien-1-ylidene]methyl]aniline monohydrochloridehas a very strong sorption to soil and sediment and therefore have negligible migration potential to ground water.