Registration Dossier
Registration Dossier
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EC number: 220-293-0 | CAS number: 2706-28-7
Adsorption / desorption
Administrative data
Link to relevant study record(s)
- Endpoint:
- adsorption / desorption
- Remarks:
- adsorption
- Type of information:
- calculation (if not (Q)SAR)
- Remarks:
- Migrated phrase: estimated by calculation
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Data is from Estimation Programs Interface Suite™
- Qualifier:
- according to guideline
- Guideline:
- other: modelling database
- Principles of method if other than guideline:
- Estimation of Adsorption by using KOCWIN Program (v2.00)
- GLP compliance:
- no
- Type of method:
- other: estimated
- Media:
- soil
- Radiolabelling:
- not specified
- Test temperature:
- 25 deg.C
- Analytical monitoring:
- not specified
- Type:
- Koc
- Value:
- 871.3
- Temp.:
- 25 °C
- Remarks on result:
- other: Log Koc=2.940 (Estimated via MCI method)
- Conclusions:
- The Soil Adsorption Coefficient i.e Koc value of Disodium 2-amino-5-[(4-sulphonatophenyl)azo]benzenesulphonate (Synonym of C.I. Acid Yellow 9) was estimated using EPI suite KOCWIN Program (v2.00) program as Koc 871.3 L/kg(log Koc=2.940) by means of MCI method at 25 deg.C. This Koc value indicates that the substance Disodium 2-amino-5-[(4-sulphonatophenyl)azo]benzenesulphonate (Synonym of C.I. Acid Yellow 9) has moderate sorption to soil and sediment and therefore have slow migration potential to groundwater.
- Executive summary:
The Soil Adsorption Coefficient i.e Koc value of Disodium 2-amino-5-[(4-sulphonatophenyl)azo]benzenesulphonate (Synonym of C.I. Acid Yellow 9) was estimated using EPI suite KOCWIN Program (v2.00) program as Koc 871.3 L/kg(log Koc=2.940) by means of MCI method at 25 deg.C. This Koc value indicates that the substance Disodium 2-amino-5-[(4-sulphonatophenyl)azo]benzenesulphonate (Synonym of C.I. Acid Yellow 9) has moderate sorption to soil and sediment and therefore have slow migration potential to groundwater.
Reference
Description of key information
The Soil Adsorption Coefficient i.e Koc value of Disodium 2-amino-5-[(4-sulphonatophenyl)azo]benzenesulphonate (Synonym of C.I. Acid Yellow 9) was estimated using EPI suite KOCWIN Program (v2.00) program as Koc 871.3 L/kg(log Koc=2.940) by means of MCI method at 25 deg.C. This Koc value indicates that the substance Disodium 2-amino-5-[(4-sulphonatophenyl)azo]benzenesulphonate (Synonym of C.I. Acid Yellow 9) has moderate sorption to soil and sediment and therefore have slow migration potential to groundwater.
Key value for chemical safety assessment
- Koc at 20 °C:
- 871.3
Additional information
The Soil Adsorption Coefficient i.e Koc value of Disodium 2-amino-5-[(4-sulphonatophenyl)azo]benzenesulphonate (Synonym of C.I. Acid Yellow 9) was estimated using EPI suite KOCWIN Program (v2.00) program as Koc 871.3 L/kg(log Koc=2.940) by means of MCI method at 25 deg.C. This Koc value indicates that the substance Disodium 2-amino-5-[(4-sulphonatophenyl)azo]benzenesulphonate (Synonym of C.I. Acid Yellow 9) has moderate sorption to soil and sediment and therefore have slow migration potential to groundwater.
[LogKoc: 2.94]
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