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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Administrative data

Endpoint:
partition coefficient
Type of information:
(Q)SAR
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Justification for type of information:
QSAR prediction: migrated from IUCLID 5.6

Data source

Reference
Reference Type:
publication
Title:
KOWWIN v1.68 EPIsuit4.0
Author:
Meylan, W.M. and P.H. Howard
Year:
1995
Bibliographic source:
http://www.epa.gov/opptintr/exposure/pubs/episuite.htm

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: REACH Guidance on QSAR R.6 may/july 2008

Test material

Constituent 1
Chemical structure
Reference substance name:
(2R,3R,5R)-4,4-difluoro-2-[(3-fluorobenzoyloxy)methyl]-5-(methanesulfonyloxy)oxolan-3-yl 3-fluorobenzoate; (2R,3R,5S)-4,4-difluoro-2-[(3-fluorobenzoyloxy)methyl]-5-(methanesulfonyloxy)oxolan-3-yl 3-fluorobenzoate
EC Number:
938-647-4
Cas Number:
942288-39-3
Molecular formula:
C20H16F4O8S
IUPAC Name:
(2R,3R,5R)-4,4-difluoro-2-[(3-fluorobenzoyloxy)methyl]-5-(methanesulfonyloxy)oxolan-3-yl 3-fluorobenzoate; (2R,3R,5S)-4,4-difluoro-2-[(3-fluorobenzoyloxy)methyl]-5-(methanesulfonyloxy)oxolan-3-yl 3-fluorobenzoate
Test material form:
solid: particulate/powder
Remarks:
migrated information: powder
Details on test material:
O=C(OCC2OC(OS(=O)(=O)C)C(F)(F)C2(OC(=O)C=1C=CC=C(F)C=1))C3=CC=CC(F)=C3

Results and discussion

Partition coefficient
Type:
log Pow
Partition coefficient:
2.6
Remarks on result:
other: temperature and pH is unknown
Details on results:
Log Kow(version 1.68 estimate): 2.60

SMILES : O=C(OCC2OC(OS(=O)(=O)C)C(F)(F)C2(OC(=O)C=1C=CC=C(F)C=1))c3cccc(F)c3
CHEM :
MOL FOR: C20 H16 F4 O8 S1
MOL WT : 492.40
-------+-----+--------------------------------------------+---------+--------
TYPE | NUM | LOGKOW FRAGMENT DESCRIPTION | COEFF | VALUE
-------+-----+--------------------------------------------+---------+--------
Frag | 1 | -CH3 [aliphatic carbon] | 0.5473 | 0.5473
Frag | 1 | -CH2- [aliphatic carbon] | 0.4911 | 0.4911
Frag | 4 | -CH [aliphatic carbon] | 0.3614 | 1.4456
Frag | 2 | C [aliphatic carbon - No H, not tert] | 0.9723 | 1.9446
Frag | 4 | =CH- or =C< [olefinc carbon] | 0.3836 | 1.5344
Frag | 2 | -O- [oxygen, aliphatic attach] |-1.2566 | -2.5132
Frag | 2 | -F [fluorine, aliphatic attach] |-0.0031 | -0.0062
Frag | 1 | -F [fluorine, olefinic attach] | 0.0545 | 0.0545
Frag | 6 | Aromatic Carbon | 0.2940 | 1.7640
Frag | 1 | -C(=O)O [ester, aliphatic attach] |-0.9505 | -0.9505
Frag | 1 | -C(=O)O [ester, aromatic attach] |-0.7121 | -0.7121
Frag | 1 | -F [fluorine, aromatic attach] | 0.2004 | 0.2004
Frag | 1 | -SO2-O [sulfonate, aliph att] |-0.7250 | -0.7250
Factor| 1 | Quaternary carbon(cyclic,2 halogen attach)|-0.7000 | -0.7000
Const | | Equation Constant | | 0.2290
-------+-----+--------------------------------------------+---------+--------
Log Kow = 2.6039

Applicant's summary and conclusion