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Environmental fate & pathways

Adsorption / desorption

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
adsorption / desorption
Remarks:
adsorption
Type of information:
calculation (if not (Q)SAR)
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
accepted calculation method
Justification for type of information:
Estimated data generated using the EPI Suite model developed by the USEPA.
Qualifier:
according to guideline
Guideline:
other: Modeling database
Principles of method if other than guideline:
Prediction done using KOCWIN Program (v2.00)
GLP compliance:
not specified
Type of method:
other: MCI Method
Media:
soil
Specific details on test material used for the study:
- Name of test material : bis[[4-[[4-(diethylamino)phenyl][4-(ethylamino)-1-naphthyl]methylene]cyclohexa-2,5-dien-1-ylidene]diethylammonium] dicopper(1+) hexa(cyano-C)ferrate(4-)
- Molecular formula : C33H40N3.1/2C6FeN6.Cu
- Molecular weight : 1296.445 g/mol
- Smiles notation : CCNc1ccc(c2c1cccc2)C(=C3C=CC(=[N+](CC)CC)C=C3)c4ccc(cc4)N(CC)CC.CCNc1ccc(c2c1cccc2)C(=C3C=CC(=[N+](CC)CC)C=C3)c4ccc(cc4)N(CC)CC.C(#N)[Fe-4](C#N)(C#N)(C#N)(C#N)C#N.[Cu+].[Cu+]
- InChl : 1S/2C33H39N3.6CN.2Cu.Fe/c2*1-6-34-32-24-23-31(29-13-11-12-14-30(29)32)33(25-15-19-27(20-16-25)35(7-2)8-3)26-17-21-28(22-18-26)36(9-4)10-5;6*1-2;;;/h2*11-24H,6-10H2,1-5H3;;;;;;;;;/q;;;;;;;;2*+1;-4/p+2
- Substance type: Organic
- Physical state: Solid
Radiolabelling:
not specified
Test temperature:
25 deg.C
Analytical monitoring:
not specified
Key result
Type:
Koc
Value:
433 000 000 L/kg
Temp.:
25 °C
Remarks on result:
other: Log Koc= 8.636 (estimated by MCI method)
Transformation products:
not specified
Validity criteria fulfilled:
not specified
Conclusions:
The soil adsorption coefficient i.e Koc value of bis[[4-[[4-(diethylamino)phenyl][4-(ethylamino)-1-naphthyl]methylene]cyclohexa-2,5-dien-1-ylidene]diethylammonium] dicopper(1+) hexa(cyano-C)ferrate(4-) was estimated to be 433000000 L/kg (log Koc=8.636) by means of MCI method (at 25 deg C). This Koc value indicates that the substance bis[[4-[[4-(diethylamino)phenyl][4-(ethylamino)-1-naphthyl]methylene]cyclohexa-2,5-dien-1-ylidene]diethylammonium] dicopper(1+) hexa(cyano-C)ferrate(4-) has a very strong sorption to soil and sediment and therefore have negligible migration potential to ground water.
Executive summary:

KOCWIN model (v2.00) of Estimation Programs Interface (EPI Suite, 2017) was used to predict the soil adsorption coefficient i.e Koc value of test chemical bis[[4 -[[4 -(diethylamino)phenyl][4 -(ethylamino)-1 -naphthyl]methylene]cyclohexa-2,5 -dien-1 -ylidene]diethylammonium] dicopper(1+) hexa(cyano-C)ferrate(4-) (CAS No. 82338 -76 -9). The soil adsorption coefficient i.e Koc value of bis[[4 -[[4 -(diethylamino)phenyl][4 -(ethylamino)-1 -naphthyl]methylene]cyclohexa-2,5 -dien-1 -ylidene]diethylammonium] dicopper(1 +) hexa(cyano-C)ferrate(4 -) was estimated to be 433000000 L/kg (log Koc= 8.636)  by means of MCI method (at 25 deg C). This Koc value indicates that the substance bis[[4-[[4-(diethylamino)phenyl][4-(ethylamino)-1-naphthyl]methylene]cyclohexa-2,5-dien-1-ylidene]diethylammonium] dicopper(1+) hexa(cyano-C)ferrate(4-) has a very strong sorption to soil and sediment and therefore have negligible migration potential to ground water.

Description of key information

KOCWIN model (v2.00) of Estimation Programs Interface (EPI Suite, 2017) was used to predict the soil adsorption coefficient i.e Koc value of test chemical bis[[4 -[[4 -(diethylamino)phenyl][4 -(ethylamino)-1 -naphthyl]methylene]cyclohexa-2,5 -dien-1 -ylidene]diethylammonium] dicopper(1+) hexa(cyano-C)ferrate(4-) (CAS No. 82338 -76 -9). The soil adsorption coefficient i.e Koc value of bis[[4 -[[4 -(diethylamino)phenyl][4 -(ethylamino)-1 -naphthyl]methylene]cyclohexa-2,5 -dien-1 -ylidene]diethylammonium] dicopper(1 +) hexa(cyano-C)ferrate(4 -) was estimated to be 433000000 L/kg (log Koc= 8.636)  by means of MCI method (at 25 deg C). This Koc value indicates that the substance bis[[4-[[4-(diethylamino)phenyl][4-(ethylamino)-1-naphthyl]methylene]cyclohexa-2,5-dien-1-ylidene]diethylammonium] dicopper(1+) hexa(cyano-C)ferrate(4-) has a very strong sorption to soil and sediment and therefore have negligible migration potential to ground water.

Key value for chemical safety assessment

Koc at 20 °C:
433 000

Additional information

Predicted data for the target compound bis[[4-[[4-(diethylamino)phenyl][4-(ethylamino)-1-naphthyl]methylene]cyclohexa-2,5-dien-1-ylidene]diethylammonium] dicopper(1+) hexa(cyano-C)ferrate(4-) (CAS No. 82338-76-9) and supporting study for its read across substance were reviewed for the adsorption end point which are summarized as below:

 

In a key study,theKOCWIN Program(v2.00) of Estimation Programs Interface (EPI Suite, 2017) was used to predict the soil adsorption coefficient i.e Koc value of test chemical bis[[4 -[[4 -(diethylamino)phenyl][4 -(ethylamino)-1 -naphthyl]methylene]cyclohexa-2,5 -dien-1 -ylidene]diethylammonium] dicopper(1+) hexa(cyano-C)ferrate(4-) (CAS No. 82338 -76 -9).

The soil adsorption coefficient i.e Koc value of bis[[4 -[[4 -(diethylamino)phenyl][4 -(ethylamino)-1 -naphthyl]methylene]cyclohexa-2,5 -dien-1 -ylidene]diethylammonium] dicopper(1 +) hexa(cyano-C)ferrate(4 -) was estimated to be 433000000 L/kg (log Koc= 8.636)  by means of MCI method (at 25 deg C). This Koc value indicates that the substance bis[[4-[[4-(diethylamino)phenyl][4-(ethylamino)-1-naphthyl]methylene]cyclohexa-2,5-dien-1-ylidene]diethylammonium] dicopper(1+) hexa(cyano-C)ferrate(4-) has a very strong sorption to soil and sediment and therefore have negligible migration potential to ground water.

 

In a supporting 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)benzhydryli dene)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 chemical bis[[4-[[4-(diethylamino)phenyl][4-(ethylamino)-1-naphthyl]methylene]cyclohexa-2,5-dien-1-ylidene]diethylammonium] dicopper(1+) hexa(cyano-C)ferrate(4-) (fromCompTox Chemistry Dashboard,2017) and for its read across substance (from authoritative database HSDB, 2017), it can be concluded that the Koc value of test substance bis[[4-[[4-(diethylamino)phenyl][4-(ethylamino)-1-naphthyl]methylene]cyclohexa-2,5-dien-1-ylidene]diethylammonium] dicopper(1+) hexa(cyano-C)ferrate(4-) was estimated to be

433000000 L/kg (log Koc= 8.636), indicating that the test chemical bis[[4 -[[4 -(diethylamino)phenyl][4 -(ethylamino)-1 -naphthyl]methylene]cyclohexa-2,5 -dien-1 -ylidene]diethylammonium] dicopper(1 +) hexa(cyano-C)ferrate(4 -)has a very strong sorption to soil and sediment and therefore have negligible migration potential to ground water.)

[LogKoc: 8.636]