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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:
37 days
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
comparable to guideline study
Qualifier:
according to
Guideline:
EU Method A.6 (Water Solubility)
Qualifier:
according to
Guideline:
OECD Guideline 105 (Water Solubility)
Qualifier:
according to
Guideline:
EPA OPPTS 830.7840 (Water Solubility)
GLP compliance:
yes
Type of method:
column elution method
Specific details on test material used for the study:
Batch 135214 of Disperse Blue 359 was a dark blue powder with a purity of 99%.
Key result
Water solubility:
ca. 0.007 mg/L
Conc. based on:
test mat.
Loading of aqueous phase:
47.3 mg/L
Incubation duration:
ca. 16 h
Temp.:
20 °C
pH:
>= 8 - <= 8.3
Details on results:
The water solubility of the test item at 20°C was 0.0067 mg/L. The value was estimated by extrapolation of the calibration curve and it was below the LOQ (established at 0.01 mg/L). The coefficient of variation of the measurement at both flow rates were within criteria. The pH values of the aqueous samples were between 8.0 and 8.3.

The water solubility of the test item at 20°C was 0.0067 mg/L. The value was estimated by extrapolation of the calibration curve and it was below the LOQ (established at 0.01 mg/L). The coefficient of variation of the measurement at both flow rates were within criteria. The pH values of the aqueous samples were between 8.0 and 8.3.

Conclusions:
The column elution method was applied for the determination of the water solubility of Disperse Blue 359.
The water solubility of the test item at 20°C was 0.0067 mg/L. The value was estimated by extrapolation of the calibration curve and it was below the LOQ (established at 0.01 mg/L). The coefficient of variation of the measurement at both flow rates were within criteria. The pH values of the aqueous samples were between 8.0 and 8.3.

Description of key information

The water solubility of the test item at 20°C was 0.0067 mg/L. The value was estimated by extrapolation of the calibration curve and it was below the LOQ (established at 0.01 mg/L). The coefficient of variation of the measurement at both flow rates were within criteria. The pH values of the aqueous samples were between 8.0 and 8.3.

Key value for chemical safety assessment

Water solubility:
0.007 mg/L
at the temperature of:
20 °C

Additional information