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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Link to relevant study record(s)

Reference
Endpoint:
partition coefficient
Type of information:
calculation (if not (Q)SAR)
Adequacy of study:
key study
Study period:
2016-12-19
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
accepted calculation method
Qualifier:
no guideline followed
Principles of method if other than guideline:
Calculation model based on the molecualr connectivity indices, developed for the accurate prediction and evaluation of 1-octanol / water partition coefficient (log KOW).
Calculation was perfomed with EPIWIN (KOCWIN v2.00), a software tool provided by the EPA, United States Environmental Protection Agency
GLP compliance:
no
Type of method:
calculation method (fragments)
Partition coefficient type:
octanol-water
Analytical method:
other: Calculation method
Key result
Type:
log Pow
Partition coefficient:
-1.5
Temp.:
25 °C
pH:
ca. 7
Remarks on result:
other: calculated log Pow
Details on results:
calculated with EPIWIN (KOCWIN v2.00)
Conclusions:
The calculated substance silicate anion SiO3 2- (the reciprocal base of silicic acid) is very similiar to silicic acid, aluminium magnesium sodium salt) has a log Koc of -1.3023 resp. log Kow = -1.50.
Therefore it is more soluble in water than in organic solvents like 1-octanol etc.

Description of key information

The calculated substance silicate anion SiO3 2- (the reciprocal base of silicic acid) is very similiar to silicic acid, aluminium magnesium sodium salt) has a log Koc of -1.3023 resp. log Kow = -1.50.

Therefore it is more soluble in water than in organic solvents like 1-octanol etc.

.

Key value for chemical safety assessment

Log Kow (Log Pow):
-1.5
at the temperature of:
25 °C

Additional information