Registration Dossier

Administrative data

Endpoint:
adsorption / desorption: screening
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: The study was conducted according to O.E.C.D. Testing Guideline No. 121 with GLP compliance.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2010

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
OECD Guideline 121 (Estimation of the Adsorption Coefficient (Koc) on Soil and on Sewage Sludge using High Performance Liquid Chromatography (HPLC))
Deviations:
not specified
GLP compliance:
yes
Type of method:
HPLC estimation method
Media:
other: HPLC mobile phase.

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
As per IUCLID5 Section 1.4.
Radiolabelling:
no

Study design

Test temperature:
No data

HPLC method

Details on study design: HPLC method:
The High Performance Liquid Chromatography (HPLC) system was fitted with a pulse-free pump and a cyanopropyl resin on silica base column. The mobile phase was methanol/water (55%/45%). The dead time was estimated based on the retention time of an unretained standard. Six reference standards with published Koc values were run on the system to establish the calibration curve data. The curve was calculated as the linear regression line by plotting the logarithm of the capacity factor of the reference conpounds as a function of the respective compound Koc value. Duplicate injections of HDDGE were made. The adsorption coefficient (Koc) of HDDGE was calculated by interpolation of the capacity factor (k) on the calibration cruve.

Batch equilibrium or other method

Computational methods:
The adsorption coefficient (Koc) of 1,6-Hexanediol Diglycidylether (HDDGE) was estimated by interpolating the calculated capacity factor (k) of HDDGE on the calibration cruve of the reference substances.

Results and discussion

Adsorption coefficient
Type:
Koc
Value:
ca. 962

Results: HPLC method

Details on results (HPLC method):
The estimated Adsorption Coefficient (Koc) of 1,6-Hexanediol Diglycidylether was 962 and the Log Koc was 2.98.

Applicant's summary and conclusion

Conclusions:
The Log Koc for 1,6-Hexanediol Diglycidylether (HDDGE) was approximately 2.98 suggesting low potential for adsorption to soil, sewage sludge and sediment.
Executive summary:

An estimation of the Log Koc for 1,6-Hexanediol Diglycidylether (HDDGE) was made by an O.E.C.D. Testing Guideline No. 121 study with GLP compliance. The Log Koc for 1,6-Hexanediol Diglycidylether (HDDGE) was approximately 2.98 suggesting low potential for adsorption to soil, sewage sludge and sediment.