Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Water solubility

Currently viewing:

Administrative data

Link to relevant study record(s)

Reference
Endpoint:
water solubility
Type of information:
experimental study
Adequacy of study:
key study
Study period:
October-November 2016
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
The study was conducted according to an internationally recognised method, and under GLP. No deviation was reported. Test substance is adequately specified with purity. Therefore full validation applies.
Qualifier:
according to guideline
Guideline:
OECD Guideline 105 (Water Solubility)
Deviations:
yes
Remarks:
standard modified according to Letinski & all, 2002 protocol
Qualifier:
according to guideline
Guideline:
EU Method A.6 (Water Solubility)
Deviations:
yes
Remarks:
standard modified according to Letinski & all, 2002 protocol
Qualifier:
according to guideline
Guideline:
other: Letinski et al., 2002. Slow-stir water solubility measurements of selected alcohols and diesters, Chemosphere 48: 257-265.
Qualifier:
according to guideline
Guideline:
other: OECD-Guideline 123 for Testing of Chemicals, Partition Coefficient (1-Octanol/Water): Slow-Stirring Method (2006)
Principles of method if other than guideline:
Not applicable
GLP compliance:
yes (incl. QA statement)
Remarks:
inspected on 1,2 and 3 July 2014 / signed on 5 Mars 2015
Type of method:
other: Slow-stir method
Key result
Water solubility:
20.7 mg/L
Conc. based on:
other: main peak detected by GC/FID (corresponding to 70.76% of the composition(GC/FID %area))
Loading of aqueous phase:
100 mg/L
Incubation duration:
>= 165 h
Temp.:
20 °C
pH:
>= 6.6 - <= 7
Remarks on result:
other: mean of three determinations in ultrapure water (Vessels 1,2 and 3)
Remarks:
In each vessel, the water solubility was based on the the mean of five consecutive sampling after equilibrium
Key result
Water solubility:
23.16 mg/L
Conc. based on:
other: main peak detected by GC/FID (corresponding to 70.76% of the composition(GC/FID %area))
Loading of aqueous phase:
100 mg/L
Incubation duration:
>= 165 h
Temp.:
20 °C
pH:
>= 7.8 - <= 8
Remarks on result:
other: Vessel 4 (Dahnia medium) : mean of five consecutive sampling used to determine that the equilibrium was reached

Results:

Vessel 1 (ultra pure water) : 23.625 mg/L

Vessel 2 (ultra pure water) : 21.03 mg/L

Vessel 3 (ultra pure water) : 17.766 mg/L

Vessel 4 (Daphnia medium) : 20.7 mg/L

In each vessel : Mean concentration obtained on five consecutive sampling based on quatification of the main peak detected by GC/FID (corresponding to 70.76% of the composition(GC/FID %area); loading rate : 100 mg/L; after 165h at 20°C; pH 6.6 -7.0 in ultra pure water and pH 7.8 -8.0 in Daphnia medium)

Validity Criteria :

The slope of the concentration vs. time regression graph was not significantly different from zero, the maximum difference observed in the 5 consecutive sampling did not differ by more than 30% and the determined solubilities of the three test vessels did not differ by more than 30 %.

 

Temperatures were kept constant within ± 0.5 °C.

After a quick decrease of the pH value measured in the systems with ultrapure water during the first 24 hours (down to pH = 5), a weak base was added at a low concentration (1mM K2HPO4in the final volume) to maintain de pH above 6. No significant pH variations were observed in the Daphnia medium system.

Executive summary:

The water solubility of the test item was determined under GLP according OECD 105 guideline and EU A6 guideline, modified with slow stirring approach.

 

The study was conducted in ultra pure water, in triplicate vessels and in Daphnia medium. The samples were separated from eachother by time intervals of at least 5 hours and analysed by a validated GC-FID method.

 

After 165 h of incubation, the five consecutive samples performed in the vessels met the criteria showing that the equilibrium was reached.

 

The solubility of the test item in water based on the mean of the three determinations was 20.7 mg/L at 20+/-0.5°C (pH = 6.6 – 7.0).

The solubility of the test item in the Daphnia medium was23.16 mg/L at 20+/-0.5°C (pH = 7.8 – 8.0).

Description of key information

20.7 mg/L at 20 +/-0.5°C (pH=6.6 -7.0) in ultra pure water

23.16mg/L at 20 +/-0.5°C (pH=7.8 - 8.0) in daphnia medium

Equilibrium was reached after 165h.

Key value for chemical safety assessment

Water solubility:
20.7 mg/L
at the temperature of:
20 °C

Additional information

A fully reliable experimental study, conducted according to OECD/EU method and under GLP, is available. It is considered as a key study. The result is retained as key data.