Registration Dossier

Administrative data

Endpoint:
water solubility
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2016
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: well performed study according to guideline developed and agreed upon by the ETAD in january 2005 for colorants with low solubility

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2016
Report date:
2016

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: method developed by ETAD
GLP compliance:
no
Type of method:
flask method

Test material

Constituent 1
Chemical structure
Reference substance name:
Hydrogen hydroxy[2-hydroxy-3-[(2-hydroxy-3-nitrobenzylidene)amino]-5-nitrobenzenesulphonato(3-)]chromate(1-), compound with 3-[(2-ethylhexyl)oxy]propylamine (1:1)
EC Number:
287-267-9
EC Name:
Hydrogen hydroxy[2-hydroxy-3-[(2-hydroxy-3-nitrobenzylidene)amino]-5-nitrobenzenesulphonato(3-)]chromate(1-), compound with 3-[(2-ethylhexyl)oxy]propylamine (1:1)
Cas Number:
85455-32-9
Molecular formula:
C13H7CrN3O10S.C11H25NO.H
IUPAC Name:
3-[(2-ethylhexyl)oxy]propan-1-aminium 1-hydroxy-4,13-dinitro-2,17-dioxa-10-aza-1-chromatetracyclo[8.7.0.0³,⁸.0¹¹,¹⁶]heptadeca-3(8),4,6,11,13,15-hexaene-15-sulfonate
Details on test material:
purity 94.3 %

Results and discussion

Water solubility
Water solubility:
14 mg/L
Temp.:
23 °C
pH:
ca. 6.7
Details on results:
Three measurements were performed with the method described above
Individual results:
Absorption Water Sol
(d = 1 cm) mg/l
a1 0.386 13.7
a2 0.390 13.8
a3 0.410 14.5
Average 14.0

Applicant's summary and conclusion

Conclusions:
Interpretation of results (migrated information): slightly soluble (0.1-100 mg/L)
The water solubility ot the substance was determined as 14 mg/L at 23°C.
Executive summary:

The water solubility of the substance was determined 3 times according to the method developed by the ETAD at 23°C. The average of the results was 14 mg/L.