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EC number: 205-517-7
CAS number: 141-98-0
After the addition of 100 mL of buffer the test item was completely
dissolved. Hence the preliminary test displayed solubility of the test
item between 1 and 10 g/L. This is the case for all three buffer
When the test item is added aqueous solution, excess material is found
at the surface of the aqueous solution. This makes it difficult to
execute the flask method according to the guidelines, since the risk of
contamination when taking an aliquot of the aqueous solution for
analysis is too high. However, since the solubility is relatively high
(1 to 10 g/L), the water solubility is determined using an extended
preliminary test. This was done for all threee buffer solutions.
The water solubility at 25ºC and pH 4: 2.96 g/L, pH 7: 2.65 g/L, pH 9: 2.59 g/L
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