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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
water solubility
Type of information:
experimental study
Adequacy of study:
key study
Study period:
22 June 2020 - 6 August 2020
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Cross-reference
Reason / purpose for cross-reference:
reference to other study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2020
Report date:
2020

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
EU Method A.6 (Water Solubility)
Version / remarks:
2016
Deviations:
no
Qualifier:
according to guideline
Guideline:
OECD Guideline 105 (Water Solubility)
Version / remarks:
1995
Deviations:
no
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.7840 (Water Solubility)
Version / remarks:
1998
Deviations:
no
GLP compliance:
yes
Type of method:
flask method

Test material

Constituent 1
Chemical structure
Reference substance name:
(3aS,3bS,9aR,9bS,11aS)‐11a‐ethyl‐10‐methylidene‐1H,2H,3H,3aH,3bH,4H,5H,7H,8H,9H,9aH,9bH,10H,11H,11aH‐cyclopenta[a]phenanthrene‐1,7‐dione
Cas Number:
54024-17-8
Molecular formula:
C20 H26 O2
IUPAC Name:
(3aS,3bS,9aR,9bS,11aS)‐11a‐ethyl‐10‐methylidene‐1H,2H,3H,3aH,3bH,4H,5H,7H,8H,9H,9aH,9bH,10H,11H,11aH‐cyclopenta[a]phenanthrene‐1,7‐dione
Test material form:
solid: particulate/powder
Details on test material:
Storage Conditions: In refrigerator (2-8°C)

Results and discussion

Water solubility
Key result
Water solubility:
0.032 g/L
Conc. based on:
test mat.
Incubation duration:
>= 24 - <= 72 h
Temp.:
20 °C
pH:
7.1
Details on results:
-Maximum difference of the concentrations determined in the 24, 48 and 72 hour test samples meets the criterion of ≤ 15% (i.e. 7.1%)

-The mean of the concentrations after 24, 48 and 72 h was therefore reported as the water solubility of the substance.

-No test item was detected in the pretreated sample from the blank.

Any other information on results incl. tables

Table: water solubility results (flask method)



















Stirring time (hours)Analyzed concentration (g/L)Mean concentration (g/L)Maximum
difference (%)
pH

24


48


72



0.0330


0.0320


0.0307



0.0319


 


 



7.1


 


 



7.1


7.1


7.1



 

Applicant's summary and conclusion

Conclusions:
The water solubility of the substance at 20°C was determined to be 0.0319 g/L.
Executive summary:

The water solubility of the substance was determined using the flask method based on EC A.6, OECD 105 and OPPTS 830.7840. The study was performed directly at the test temperature of 20°C.


Quantification was performed by HPLC. The pH of the aqueous samples was 7.1. From the measurements obtained after 24, 48 and 72 hours of stirring, the water solubility at 20°C was determined to be 0.0319 g/L.