Registration Dossier

Environmental fate & pathways

Adsorption / desorption

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Administrative data

Endpoint:
adsorption / desorption
Remarks:
other:
Type of information:
experimental study
Adequacy of study:
key study
Study period:
From Dec.1, 2011 to Feb.1, 2012.
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: see 'Remark'
Remarks:
The data was evaluated by experts in a report of NATIONAL INDUSTRIAL CHEMICALS NOTIFICATION AND ASSESSMENT SCHEME(NICNAS), which is administered by the National Occupational Health and Safety Commission (NOHSC) of Australian Commission. Also the test was determined using OECD test methods. However, taking account of the structure of BDP, more realistic test (OECD guideline 106) should be conducted to get a more accurate Koc value of BDP.

Data source

Reference
Reference Type:
review article or handbook
Title:
Phosphoric acid, (1-methylethylidene) di-4,1-phenylene tetraphenyl ester (Fyrolflex BDP)
Author:
National Occupational Health and Safety Commission (Australia)
Year:
2000
Bibliographic source:
In:NATIONAL INDUSTRIAL CHEMICALS NOTIFICATION AND ASSESSMENT SCHEME

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
other: OECD TGP/94.75
GLP compliance:
not specified
Type of method:
HPLC estimation method
Media:
other:

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
Same with the substance notified in the section 1 of this dossier.
Radiolabelling:
no

Study design

Test temperature:
Obey with the OECD guideline 106.

Batch equilibrium or other method

Analytical monitoring:
yes
Details on sampling:
Obey with the OECD guideline 106.

Results and discussion

Adsorption coefficientopen allclose all
Type:
log Koc
Value:
>= 4.53
Type:
Koc
Value:
>= 33 900

Results: HPLC method

Details on results (HPLC method):
Since the retention time of the BDP was greater than that of cyfluthrin, the value for log Koc exceeds 4.53.

Any other information on results incl. tables

This high value for log Koc indicates that the chemical will bind strongly to the organic component of soils and sediments, and low mobility in these media.

Applicant's summary and conclusion

Validity criteria fulfilled:
not specified
Conclusions:
The compound has a large Koc (log Koc > 4.53), indicating strong affinity for the organic
component of soils and sediments, and low mobility in these media.
Executive summary:

Fifteen reference compounds were employed ranging from simazine with log Koc = 1.77, to cyfluthrin with log Koc = 4.53. Since the retention time of the BDP was greater than that of cyfluthrin, the value for log Koc exceeds 4.53. This high value for log Koc indicates that the chemical will bind strongly to the organic component of soils and sediments.