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Environmental fate & pathways

Adsorption / desorption

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Administrative data

Endpoint:
adsorption / desorption: screening
Type of information:
experimental study
Adequacy of study:
weight of evidence
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
Justification for type of information:
Data is from HSDB authoritative database

Data source

Reference
Reference Type:
other: authoritative database
Title:
Determination of adsorption value (Koc) of test chemical.
Author:
U. S. National Library of Medicine
Year:
2017
Bibliographic source:
HSDB (Hazardous Substances Data Bank); U. S. National Library of Medicine reviewed by SRC, 2017.

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
other: as mentioned below
Principles of method if other than guideline:
Soil adsorption coefficient (Koc) of test chemical was estimated using a logKow and a regression derived equation.
GLP compliance:
not specified
Type of method:
other: No data available
Media:
soil

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
solid
Details on test material:
- Name of test material (IUPAC name): trans-stilbene
- Common name: trans-1,2-diphenylethylene
- Molecular formula: C14H12
- Molecular weight: 180.249 g/mol
- Smiles notation: c1(ccccc1)\C=C\c1ccccc1
- InChl: 1S/C14H12/c1-3-7-13(8-4-1)11-12-14-9-5-2-6-10-14/h1-12H/b12-11+
- Substance type: Organic
- Physical state: Solid
Radiolabelling:
not specified

Study design

Batch equilibrium or other method

Analytical monitoring:
not specified
Computational methods:
- Other: Koc value of test chemical was estimated using a logKow of 4.81 and a regression derived equation.

Results and discussion

Adsorption coefficient
Type:
Koc
Value:
9 850 dimensionless
Remarks on result:
other: Log Koc= 3.4

Results: Batch equilibrium or other method

Transformation products:
not specified

Any other information on results incl. tables

According to a classification scheme, the estimated Koc value suggests that test chemical is expected to be immobile in soil.

Applicant's summary and conclusion

Validity criteria fulfilled:
not specified
Conclusions:
The adsorption coefficient (Koc) value of test substance was estimated to be 9850 calculated using a logKow and a regression derived equation.
Executive summary:

Adsorption study was conducted for estimating the adsorption coefficient (Koc) value of test chemical. The adsorption coefficient (Koc) value was calculated using a logKow of 4.81 and a regression derived equation. The adsorption coefficient (Koc) value of test substance was estimated to be 9850 (Log Koc = 3.4). This Koc value indicates that the test chemical has a strong sorption to soil and sediment and therefore have negligible to slow migration potential to ground water.