Registration Dossier

Diss Factsheets

Administrative data

Endpoint:
water solubility
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2017
Report date:
2017

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
EU Method A.6 (Water Solubility)
Deviations:
no
Qualifier:
according to guideline
Guideline:
OECD Guideline 105 (Water Solubility)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.7840 (Water Solubility)
Deviations:
no
GLP compliance:
yes
Type of method:
other: Estimation method

Test material

Constituent 1
Reference substance name:
Reaction products of diazotized 4-amino-6-[(4-aminophenyl)diazenyl]-3-[(4-aminophenyl)diazenyl]-5-hydroxynaphthalene-2,7-disulfonic acid, coupled with benzene-1,3-diamine, sodium salts
EC Number:
812-037-7
Cas Number:
1793011-72-9
Molecular formula:
Unknown for all components
IUPAC Name:
Reaction products of diazotized 4-amino-6-[(4-aminophenyl)diazenyl]-3-[(4-aminophenyl)diazenyl]-5-hydroxynaphthalene-2,7-disulfonic acid, coupled with benzene-1,3-diamine, sodium salts
Test material form:
solid

Results and discussion

Water solubility
Water solubility:
> 500 g/L
Conc. based on:
test mat.
Loading of aqueous phase:
509 g/L
Incubation duration:
27 h
Temp.:
20 °C
pH:
8.4
Details on results:
Test 1: Since all test item had dissolved at nominal concentration of 108 mg/L, the test was repeated at a higher test item concentration. The pH of the aqueous sample was 8.4.

Tests 2 and 3: After the stirring period, both test samples at a 1:2 ratio w/w were black coloured and no undissolved test item was observed after centrifugation. Further testing is not considered possible. The test guidelines prescribe testing at a concentration five times the saturation concentration but testing at concentrations above 1000 g/L means testing how much water dissolves in the test item. Furthermore these solutions cannot be stirred. Based on the tests performed, it was concluded that the water solubility of the substance was > 500 g/L

Applicant's summary and conclusion

Conclusions:
Based on the tests performed, it was concluded that the water solubility of the test substance at 20°C > 500 g/L.