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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
2017
Reliability:
1 (reliable without restriction)
Qualifier:
according to guideline
Guideline:
OECD Guideline 105 (Water Solubility)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.6 (Water Solubility)
Deviations:
no
GLP compliance:
yes
Type of method:
column elution method
Specific details on test material used for the study:
Identification: di-tert-butyl hydroquinone
CAS Number: 88-58-4
Appearance/Physical state: White solid
Batch: TS140610
Purity: 99.6%
Expiry date: 03 November 2018
Storage conditions: Room temperature, in the dark
Key result
Water solubility:
0.004 g/L
Conc. based on:
test mat.
Remarks:
test item was a solid, the column elution method was performed
Temp.:
30 °C
pH:
6.3
Remarks on result:
other: The preliminary estimate of the water solubility at 20.0 ± 0.5 °C was 7.3 x 10-3 g/L
Remarks:
The water solubility of the test item has been determined to be 3.8 x 10-3 g/L of solution at 20.0 ± 0.5 °C.
Details on results:
Preliminary Test
The preliminary estimate of the water solubility at 20.0 ± 0.5 °C was 7.3 x 10-3 g/L. The solution had a pH of 6.3.

As the water solubility was determined during the preliminary test to be below 10-2 g/L and the test item was a solid, the column elution method was performed.
Testing was initially carried out using the concentration method outlined for the preliminary test. Sampling was carried out at 91.25, 115 and 140 hours. Results showed variable results for system A and increasing results for system B (3.25, 0.880 and 3.99 mg/L system A and 1.89, 1.47 and 2.77 mg/L).
As the concentrated results were outside the calibration range (nominally 0.5 to 25 mg/L), the decision was made to change the processing of the samples from concentration to dilution. This provided the data reported, showing consistent results.
All results for both systems are within ± 30% of the mean as specified in the test guidelines
Conclusions:
The water solubility of the test item has been determined to be 3.8 x 10-3 g/L of solution at 20.0 ± 0.5 °C.
Executive summary:

3.8 x 10-3 g/L of solution at 20.0 ± 0.5 °C, using the column elution method, designed to be compatible with Method A.6 Water Solubility of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 105 of the OECD Guidelines for Testing of Chemicals, 27 July 1995.

Description of key information

Key value for chemical safety assessment

Water solubility:
0.004 g/L
at the temperature of:
20 °C

Additional information

3.8 x 10-3 g/L of solution at 20.0 ± 0.5 °C, using the column elution method, designed to be compatible with Method A.6 Water Solubility of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 105 of the OECD Guidelines for Testing of Chemicals, 27 July 1995.