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Physical & Chemical properties

Water solubility

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Reference
Endpoint:
water solubility
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2010-04-12 to 2010-04-19
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Study performed by means of the flask method according to a test procedure which complies with EU test method A.6.
Qualifier:
according to
Guideline:
EU Method A.6 (Water Solubility)
Deviations:
yes
Remarks:
Preliminary test not performed
GLP compliance:
yes (incl. certificate)
Remarks:
Included in study report
Type of method:
flask method
Water solubility:
178 g/L
Temp.:
20 °C
pH:
1.9

Study Results

The concentrations of the different test solutions were calculated automatically using the equation of the calibration curve and considering the dilution factors of the test solutions. The results are listed in the following table :

 Incubation time (hours) Average of two measurements (g/L) 
 24  179.4
 48  178.7
 72  176.5

Average : 178 g/L *

* : Standard deviation 1.51 g/L, relative standard deviation 0.85%

Annotation : pH value of the sample solution was 1.9 (1.9, 1.9) after 24 (48, 72 ) hours of incubation. It was observed that the sample incubation solutions turned purple in the course of the study. The colour intensity increased with incubation time. As no significant difference in the concentrations could be determined and no degradation products could be detected, the results were judged to be valid.

Conclusions:
Interpretation of results (migrated information): very soluble (> 10000 mg/L)
The solubility of the test item N,N-Bis(2-hydroxyethyl)-p-phenylenediamine sulphate monohydrate in water at 20 deg C was determined to be 178 g/L at pH 1.9.
Executive summary:

The water solubility of N,N-Bis(2 -hydroxyethyl)-p-phenylenediamine sulphate monohydrate was determined by a test procedure that complies with EU test method L383 A/54 -62 (EU A.6). The solubility of the test item N,N-Bis(2 -hydroxyethyl)-p-phenylenediamine sulphate monohydrate was determined to be 178 g/L using the flask method at 20 deg C and preincubation at 30 deg C.

Description of key information

The solubility of the test item N,N-Bis(2-hydroxyethyl)-p-phenylenediamine sulphate monohydrate in water at 20 deg C was determined to be 178 g/L at pH 1.9.

Key value for chemical safety assessment

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

Additional information

The water solubility of N,N-Bis(2 -hydroxyethyl)-p-phenylenediamine sulphate monohydrate was determined by a test procedure that complies with EU test method L383 A/54 -62 (EU A.6). The solubility of the test item N,N-Bis(2 -hydroxyethyl)-p-phenylenediamine sulphate monohydrate was determined to be 178 g/L using the flask method at 20 deg C and preincubation at 30 deg C.