Registration Dossier

Administrative data

Endpoint:
water solubility
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Test procedure according to method of Analytical Expert Group ETAD (Ecological and Toxicological Association of Dyes and Organic Pigment Manufacturer)

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2010
Report Date:
2010

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
other: Analytical Expert Group ETAD
Principles of method if other than guideline:
Determination of water solubility by UV/VIS spectrometry
Type of method:
other: shake-flask method

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
solid

Results and discussion

Water solubility
Water solubility:
<= 3.3 µg/L
Temp.:
22 °C
pH:
ca. 6
Remarks on result:
other: mean of 3 measurements

Any other information on results incl. tables

The solubility of the sample 1 -((4 -methoxy-2 -nitrophenyl)azo)-2 -naphthol

in water at ambient temperature, determined under the conditions as mentioned above, is 3.3 µg/L (mean, n = 3, sigma = 0.5).

Table 1: Individual results

   Absorption (d = 10 cm)  µg/L
 a1 0.00257  2.7
 a2 0.00319  3.5
 a3 0.00327  3.6

Applicant's summary and conclusion

Conclusions:
Interpretation of results : insoluble (< 0.1 mg/L)