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Administrative data

Endpoint:
adsorption / desorption: screening
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2005

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 121 (Estimation of the Adsorption Coefficient (Koc) on Soil and on Sewage Sludge using High Performance Liquid Chromatography (HPLC))
GLP compliance:
yes (incl. QA statement)
Type of method:
HPLC estimation method
Media:
soil/sewage sludge

Test material

Constituent 1
Chemical structure
Reference substance name:
Calcium 4-chloro-2-(5-hydroxy-3-methyl-1-(3-sulfonatophenyl)pyrazol-4-ylazo)-5-methylbenzenesulfonate
EC Number:
403-530-4
EC Name:
Calcium 4-chloro-2-(5-hydroxy-3-methyl-1-(3-sulfonatophenyl)pyrazol-4-ylazo)-5-methylbenzenesulfonate
Cas Number:
129423-54-7
Molecular formula:
C17H15ClN4O7S2.Ca
IUPAC Name:
calcium 4-chloro-2-(5-hydroxy-3-methyl-1-(3-sulfonatophenyl)pyrazol-4-ylazo)-5-methylbenzenesulfonate

Study design

Batch equilibrium or other method

Duration of adsorption equilibrationopen allclose all
Sample No.:
#1
Duration:
2.301 min
pH:
6
Temp.:
22 °C
Sample No.:
#2
Duration:
2.308 min
pH:
6
Temp.:
22 °C
Sample No.:
#3
Duration:
2.291 min
pH:
6
Temp.:
22 °C
Duration:
2.3 min
pH:
6
Temp.:
22 °C
Sample No.:
#1
Duration:
2.644 min
pH:
3
Temp.:
22 °C
Sample No.:
#2
Duration:
2.652 min
pH:
3
Temp.:
22 °C
Sample No.:
#3
Duration:
2.662 min
pH:
3
Temp.:
22 °C
Duration:
2.653 min
pH:
3
Temp.:
22 °C

Results and discussion

Adsorption coefficientopen allclose all
Type:
log Koc
Value:
< 0.75
Temp.:
22 °C
Type:
Koc
Value:
< 5.6
Temp.:
22 °C

Applicant's summary and conclusion

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