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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Physical & Chemical properties

Partition coefficient

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Administrative data

Endpoint:
partition coefficient
Type of information:
(Q)SAR
Adequacy of study:
key study
Study period:
2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
comparable to guideline study
Justification for type of information:
Log Kow (version 1.68 estimate); study technically not feasible

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2017
Report date:
2017

Materials and methods

Test guideline
Qualifier:
no guideline available
Principles of method if other than guideline:
Log Kow (version 1.68 estimate)
GLP compliance:
no
Type of method:
calculation method (fragments)
Partition coefficient type:
other: QSAR

Test material

Constituent 1
Chemical structure
Reference substance name:
(3-chloropropyl)methoxydimethylsilane
EC Number:
242-055-5
EC Name:
(3-chloropropyl)methoxydimethylsilane
Cas Number:
18171-14-7
Molecular formula:
C6H15ClOSi
IUPAC Name:
(3-chloropropyl)(methoxy)dimethylsilane
Test material form:
liquid

Results and discussion

Partition coefficient
Key result
Type:
log Pow
Partition coefficient:
ca. 3.57
Temp.:
20 °C
pH:
7
Details on results:
Log Kow(version 1.68 estimate): 3.57

SMILES : CCO[Si](C)(C)CCCCL
CHEM :
MOL FOR: C7 H17 CL1 O1 Si1
MOL WT : 180.75
-------+-----+--------------------------------------------+---------+--------
TYPE | NUM | LOGKOW FRAGMENT DESCRIPTION | COEFF | VALUE
-------+-----+--------------------------------------------+---------+--------
Frag | 3 | -CH3 [aliphatic carbon] | 0.5473 | 1.6419
Frag | 4 | -CH2- [aliphatic carbon] | 0.4911 | 1.9644
Frag | 1 | -O- [oxygen, aliphatic attach] |-1.2566 | -1.2566
Frag | 1 | -CL [chlorine, aliphatic attach] | 0.3102 | 0.3102
Frag | 1 | -Si- [silicon, aromatic or oxygen attach]| 0.6800 | 0.6800
Const | | Equation Constant | | 0.2290
-------+-----+--------------------------------------------+---------+--------
Log Kow = 3.5689

Applicant's summary and conclusion