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Physical & Chemical properties

Water solubility

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Description of key information

Data are available from a transformation dissolution test, conducted according to OECD guideline 29, and a water solubility study according to OECD guideline 105.  Both study data are reliable without restrictions. 

Key value for chemical safety assessment

Water solubility:
1.762 mg/L
at the temperature of:
21 °C

Additional information

In a study conducted according to OECD guideline 105 and EU method A6 the water solubility of tellurium powder was determined to be 1.7 mg/L at 20 °C using a modified flask method.

Transformation/dissolution study of tellurium according to OECD guidance document 29 (2001):

Screening test after 24 hours at 20.9 °C:

1.303 mg/L at pH 8

0.7446 mg/L at pH 6

Main test, sampling time 7 days, at pH 8 and 21 °C:

Loading 1 mg/L               20.02 µg/L

Loading 10 mg/L            183.3 µg/L 

Loading 100 mg/L        1.762 mg/L

Loading 1 mg/L/ 28 days sampling time:   59.64 µg/L  

The value of  1.762 mg/L is chosen for chemical safety assessment, as a worst case assumption.