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Administrative data

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: Well performed study, however no guidelines followed. Results based on calculation using algoritms.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2003
Report date:
2003

Materials and methods

Test guideline
Qualifier:
no guideline followed
Principles of method if other than guideline:
Absorption coefficient Koc was calculated based on algoritms using software from ACD..
GLP compliance:
no
Type of method:
other:
Media:
soil

Test material

Constituent 1
Reference substance name:
glycerine carbonate
IUPAC Name:
glycerine carbonate
Test material form:
other: liquid
Details on test material:
chemical name: glycerine carbonate
Cas number: 931-40-8
Molecular weight: 118.09
purity: 95-100%
source: Huntsman Petrochemical
lot number: 819326
physical appearance: clear colourless liquid
storage conditions: 22°C in the dark
Radiolabelling:
no

Study design

Batch equilibrium or other method

Analytical monitoring:
not specified
Computational methods:
Koc is the ratio of the amount of chemical absorbed per unit weight of organic carbon in the soil over the concentration in solution at equilibrium.
Koc was calculated based on algorithms.

Results and discussion

Partition coefficients
Phase system:
other: Koc
Type:
other: Koc
Value:
3.06 L/kg
Remarks on result:
other: over pH range 0-10

Any other information on results incl. tables

Absorption coefficients (Koc) at increasing pH are:

pH Koc (log Koc) 
 0 3.06 (0.5 +-1.0)
 1 3.06 (0.5 +-1.0) 
3.06 (0.5 +-1.0) 
 3   3.06 (0.5 +-1.0) 
 4   3.06 (0.5 +-1.0) 
 5   3.06 (0.5 +-1.0) 
 6   3.06 (0.5 +-1.0) 
 7   3.06 (0.5 +-1.0) 
 8   3.06 (0.5 +-1.0) 
 9   3.06 (0.5 +-1.0) 
 10   3.06 (0.5 +-1.0) 
 11  3.06 (0.5 +-1.0) 

 12

3.00 (0.5 +-1.0)

 13

2.56 (0.4 +-1.0) 

 14

1.04 (0.0 +-1.0) 

Applicant's summary and conclusion

Conclusions:
The calculated Koc of JEFFSOL GC was 3.06 over pH range 0-10. This Koc predicts that, in a system consisting of water, dissolved JEFFSOL GC, 100% of the JEFFSOL GC would adsorb to the soil organic matter.

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