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Water solubility

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Endpoint:
water solubility
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions
Remarks:
test procedure similar to OECD 105
Reason / purpose for cross-reference:
reference to same study
Reason / purpose for cross-reference:
reference to same study
Qualifier:
equivalent or similar to guideline
Guideline:
OECD Guideline 105 (Water Solubility)
Deviations:
yes
Remarks:
modified taking into account the very low solubility of the test substance
Principles of method if other than guideline:
The method for the determination and analytical investigation is according to the method that was agreed upon at the "Analytical Experts Meeting" of ETAD (Basel) on January 12, 2005.
Type of method:
flask method
Water solubility:
14.2 µg/L
Temp.:
24 °C
pH:
ca. 7
Remarks on result:
other: The determination of water solubility was conducted at ambient temperature (24-25 °C)
Details on results:
The value above represents the mean from three determinations (sigma=2.3). See below for indidividual results.

Individual results:

 

Absorption

(d = 10 cm)

µg/L

a1

0.00650

11.7

a2

0.00853

14.8

a3

0.00947

16.2

 

Conclusions:
teh test substance is practically insoluble in water (< 0.1 mg/L)
Endpoint:
water solubility
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions
Remarks:
test procedure similar to OECD 105
Reason / purpose for cross-reference:
reference to same study
Qualifier:
equivalent or similar to guideline
Guideline:
OECD Guideline 105 (Water Solubility)
Deviations:
yes
Remarks:
modified taking into account the very low solubility of the test substance
Principles of method if other than guideline:
The method for the determination and analytical investigation is according to the method that was agreed upon at the "Analytical Experts Meeting" of ETAD (Basel) on January 12, 2005.
Type of method:
flask method
Water solubility:
14.2 µg/L
Temp.:
24 °C
pH:
ca. 7
Remarks on result:
other: The determination of water solubility was conducted at ambient temperature (24-25 °C)
Details on results:
The value above represents the mean from three determinations (sigma=2.3). See below for indidividual results.

Individual results:

 

Absorption

(d = 10 cm)

µg/L

a1

0.00650

11.7

a2

0.00853

14.8

a3

0.00947

16.2

 

Conclusions:
teh test substance is practically insoluble in water (< 0.1 mg/L)
Endpoint:
water solubility
Type of information:
read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
key study
Justification for type of information:
In general the water solubility of organic pigments is within in the range of one to three digit µg/L. The particle size of the test material does not influence this intrinsic property significantly.
Reason / purpose for cross-reference:
read-across source
Water solubility:
14.2 µg/L
Temp.:
24 °C
Remarks on result:
other: the determination of the water solubility was conducted at ambient temperature (24 - 25°C)

Description of key information

Key value for chemical safety assessment

Water solubility:
14.2 µg/L
at the temperature of:
23 °C

Additional information