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Administrative data

Endpoint:
water solubility
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2007
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 very low solubility

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2007
Report date:
2007

Materials and methods

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

Test material

Constituent 1
Chemical structure
Reference substance name:
2,2'-(1,4-phenylene)bis[4-[(4-methoxyphenyl)methylene]oxazol-5(4H)-one]
EC Number:
257-055-0
EC Name:
2,2'-(1,4-phenylene)bis[4-[(4-methoxyphenyl)methylene]oxazol-5(4H)-one]
Cas Number:
51202-86-9
Molecular formula:
C28H20N2O6
IUPAC Name:
2,2'-(1,4-phenylene)bis[4-[(4-methoxyphenyl)methylene]oxazol-5(4H)-one]
Details on test material:
purity > 99,7%

Results and discussion

Water solubility
Water solubility:
49.9 µg/L
Temp.:
23 °C
pH:
ca. 7
Details on results:
Three measurements were performed with the method described above
Individual results:
Absorption Water Sol
(d = 10 cm) μg/l
a1 0.06055 42.3
a2 0.07277 50.9
a3 0.08058 56.4
Average 49.9

Applicant's summary and conclusion

Conclusions:
Interpretation of results (migrated information): insoluble (< 0.1 mg/L)
The water solubility ot the substance was determined as 49.9 µg/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 49.9 µg/L.

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