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EC number: 231-150-7
CAS number: 7440-41-7
Table1 Results of the Water Solubility of Beryllium Metal
SD = ± 0.04
-Srel = 144.357 %
SD = ± 0.06
-Srel = 87.313 %
SD = Standard
SD rel. = Relative
The determination of the water solubility of beryllium metal powder was
performed according to the OECD guideline No. 105, “Water Solubility”
(adopted July 27, 1995) and EC 440/2008, A.6 “Water Solubility” using
the column elution method.
During pre-tests the water solubility of the test item at room
temperature was estimated to be < 1 g/l by visual judgment and to be
below 10 mg/l by a simplified flask test. Therefore, the column elution
method was used for the performance of the main test. During the main
test six samples have been analyzed in the first run (0.53 ml/min) and
six samples during the second run (0.26 ml/min), each with a sampling
interval of one hour. Total elution time was 140.5 hours. The sample
measurement was performed by AAS. The water solubility of beryllium
metal powder at 20 °C and a pH value of 6.11 was determined to be below
the limit of quantification, which is 0.5 μg/l. The measured results
differ by less than 30 %. Therefore, the study is considered to be
valid. Details of the results are given in Table 1. The calibration
curve fit was r² = 0.9995 (optimum 1.0000). This reflects the linearity
of the AAS-system within the calibration range of 0.5 μg/l to 5.0 μg/l
of the test item.
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