Registration Dossier

Environmental fate & pathways

Adsorption / desorption

Currently viewing:

Administrative data

Link to relevant study record(s)

Referenceopen allclose all

Endpoint:
adsorption / desorption: screening
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2011
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: The study was conducted using a documented method and in compliance with GLP.
Qualifier:
according to
Guideline:
EU Method C.19 (Estimation of the Adsorption Coefficient (KOC) on Soil and Sewage Sludge Using High Performance Liquid Chromatography (HPLC))
Deviations:
no
GLP compliance:
yes
Type of method:
HPLC estimation method
Media:
soil/sewage sludge
Radiolabelling:
no
Type:
log Koc
Value:
3.8
Temp.:
30 °C
Remarks on result:
other: Recorded temperature was column temperature.
Endpoint:
adsorption / desorption
Remarks:
adsorption
Type of information:
calculation (if not (Q)SAR)
Remarks:
Migrated phrase: estimated by calculation
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: generally accepted calculation method
Type of method:
other: calculation
Media:
soil
Type:
Koc
Value:
4 036
Type:
log Koc
Value:
3.606
Conclusions:
The calculated soil sorption coefficient Koc=4036 of m- and p-diisopropylbenzene indicates a strong sorption onto soil organic matter.
Executive summary:

The soil sorption coefficient Koc of diisopropylbenzene was calculated using EPIWIN v3.20, PCKOCWIN v1.66. The calculation yielded a value of 4036 (log Koc=3.606) indicating a strong sorption onto soil organic matter.

Endpoint:
adsorption / desorption
Remarks:
adsorption
Type of information:
calculation (if not (Q)SAR)
Remarks:
Migrated phrase: estimated by calculation
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: peer-reviewed data bank
GLP compliance:
not specified
Type of method:
other: calculation
Media:
soil
Type:
Koc
Value:
4 000
Conclusions:
The calculation of Koc based on molecular connectivity indexes yielded a value of 4000 and indicates that a strong sorption of diisopropylbenzene onto soil organic matter is to be expected.
Executive summary:

In the peer-reviewed data bank, a calculated soil sorption coefficient Koc=4000 is reported. The calculation is based on molecular connectivity indexes according to Sabljic A (1987) Environ Sci Technol 21, 358 -366. Based on the estimated Koc, a strong sorption of diisopropylbenzene onto soil organic matter is to be expected.

Description of key information

The soil sorption coefficient Koc of p-diisopropylbenzene was estimated by EC HPLC method to be logKoc = 3.8.

Calculation using EPIWIN v3.20, PCKOCWIN v1.66 yielded a value of 4036 (log Koc=3.606).The calculation of Koc based on molecular connectivity indexes yielded a value of 4000 and indicates that a  sorption of diisopropylbenzene onto soil organic matter is to be expected.

Key value for chemical safety assessment

Koc at 20 °C:
6 310

Additional information

Reliable data obtained via EC guideline and supported by calculations.

[LogKoc: 3.8]