Sulfuric acid, C16-C18 (even numbered) alkyl esters, sodium salts and C16-18 (even numbered) alcohols

Adsorption / desorption

Administrative data

Endpoint:

adsorption / desorption: screening

Type of information:

read-across from supporting substance (structural analogue or surrogate)

Adequacy of study:

weight of evidence

Reliability:

4 (not assignable)

Rationale for reliability incl. deficiencies:

abstract

Justification for type of information:

Log Koc was taken from the OECD SIDS for castegory Long Chain Aliphatic Alcohols. This document and all information was reviewed by the Global ICCA Aliphatic Alcohols Consortium. UK government (the Environment Agency of England and Wales, and MRC Institute for Environment and Health) peer-reviewed the SIDS documents, and audited selected key studies to check the robust study summaries.

Cross-reference

Reason / purpose for cross-reference:

read-across source

Reference

Endpoint:

adsorption / desorption: screening

Type of information:

other: Log KOC was taken from am OECD SIDS for category LCAs (reviewed by the Global ICCA Aliphatic Alcohols Consortium and relevant UK governmental organisations).

Adequacy of study:

weight of evidence

Reliability:

4 (not assignable)

Rationale for reliability incl. deficiencies:

abstract

Justification for type of information:

Log Koc was taken from the OECD SIDS for castegory Long Chain Aliphatic Alcohols. This document and all information was reviewed by the Global ICCA Aliphatic Alcohols Consortium. UK government (the Environment Agency of England and Wales, and MRC Institute for Environment and Health) peer-reviewed the SIDS documents, and audited selected key studies to check the robust study summaries.

Qualifier:

equivalent or similar to guideline

Guideline:

OECD Guideline 106 (Adsorption - Desorption Using a Batch Equilibrium Method)

GLP compliance:

no

Type of method:

batch equilibrium method

Key result

Type:

log Koc

Value:

5.15 dimensionless

Matrix:

STP sludge

Conclusions:

The Log Koc of the major monoconstituent LCA C16 of the multiconstituent substance is 5.15. This value is appropriate to characterize the sorption behavior ot the substance.

Executive summary:

As the determination of a mixture Log Koc value was not possible, the Koc value for the major monoconstituent of the multiconstituent mixture was used, i.e. that for C-16. The corresponding Log Koc is 5.15. This value was obtained from OECD SIDS for SIMA 22 (category long chain alcohols), citing research of Compernolle et al. (2006) for the sorptoin behaviour of C12, 14, 15, 16 and C18 on STP sludges . The OECD SIDS and all information was reviewed by the Global ICCA Aliphatic Alcohols Consortium.  UK government (the Environment Agency of England and Wales, and MRC Institute for Environment and Health) peer-reviewed the SIDS documents, and audited selected key studies to check the robust study summaries. The OECD SIDS states that Compernolle etal. (2006) determined the adsorption behaviour of vaiours long chain alcohols on STP sludges, amongst them the above mentioned C16 LCA. A log Koc value of 5.15 is reported. This value is consistent with the experimentally determined Log Kow for the substance and the resulting Log Koc (calculated via the Di Toro 1985 equation log Koc = 0.00028 + (0.983 x log Kow)) and is hence considered to approriately reflect the sorption behavior of the mixture

Materials and methods

Type of method:

batch equilibrium method

Test material

Test material information

Constituent 1

Reference substance name:

Sulfuric acid, C16-C18 (even numbered) alkyl esters, sodium salts and C16-18 (even numbered) alcohols

EC Number:

944-399-8

Cas Number:

not yet assigned

Molecular formula:

see information in structural formula

IUPAC Name:

Sulfuric acid, C16-C18 (even numbered) alkyl esters, sodium salts and C16-18 (even numbered) alcohols

Results and discussion

Adsorption coefficient

Key result

Type:

log Koc

Value:

5.15 dimensionless

Matrix:

STP sludge

Any other information on results incl. tables

The LCOH C16 constituent is the major constituent of the multiconstituent substance.

Applicant's summary and conclusion

Conclusions:

The Log Koc of the major monoconstituent LCA C16 of the multiconstituent substance is 5.15. This value is appropriate to characterize the sorption behavior ot the substance.

Executive summary:

As the determination of a mixture Log Koc value was not possible, the Koc value for the major monoconstituent of the multiconstituent mixture was used, i.e. that for C-16. The corresponding Log Koc is 5.15. This value was obtained from OECD SIDS for SIMA 22 (category long chain alcohols), citing research of Compernolle et al. (2006) for the sorptoin behaviour of C12, 14, 15, 16 and C18 on STP sludges . The OECD SIDS and all information was reviewed by the Global ICCA Aliphatic Alcohols Consortium.  UK government (the Environment Agency of England and Wales, and MRC Institute for Environment and Health) peer-reviewed the SIDS documents, and audited selected key studies to check the robust study summaries. The OECD SIDS states that Compernolle etal. (2006) determined the adsorption behaviour of vaiours long chain alcohols on STP sludges, amongst them the above mentioned C16 LCA. A log Koc value of 5.15 is reported. This value is consistent with the experimentally determined Log Kow for the substance and the resulting Log Koc (calculated via the Di Toro 1985 equation log Koc = 0.00028 + (0.983 x log Kow)) and is hence considered to approriately reflect the sorption behavior of the mixture