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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:
17 Jan - 27 Mar 2013
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP -guideline study
Qualifier:
according to
Guideline:
OECD Guideline 105 (Water Solubility)
Qualifier:
according to
Guideline:
EU Method A.6 (Water Solubility)
GLP compliance:
yes (incl. certificate)
Remarks:
LUBW Landesanstalt für Umwelt, Messungen und Naturschutz Baden-Württemberg, Karlsruhe, Germany
Type of method:
flask method
Water solubility:
325 g/L
Temp.:
20 °C
pH:
0.43

Preliminary test:

Test item / mg

Added volume of water / mL

Total volume of water / mL

Time of shaking / min

Remarks

Approx. Solubility / g/L

100

0.1

0.1

10

undissolved

200 to 100

0.5

0.6

10

undissolved

1

1.6

10

clear solution

 

Time course of the solubility of the test item at 20°C and pH 0.43

Sample no.

Determined conc. of niobium
/ g/L

Determined conc. of ammonium niobium oxalate / g/L

Mean Determined conc. of Ammonium Niobium Oxalate ± RSD

pH

96

1

54.3

316

325 ± 6

0.42

2

54.1

315

120

1

54.8

319

0.44

2

55.1

320

144

1

55.0

320

0.42

2

62.3

362

 

Mean

0.43

Description of key information

325 g/L at 20°C and pH=0.43 (OECD 105)

Key value for chemical safety assessment

Water solubility:
325 g/L
at the temperature of:
20 °C

Additional information

The water solubility of the test item was determined by flask method according to OECD Guideline 105.