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EC number: 849-166-3
CAS number: 83841-00-3
Table 1: Results of pH value measurements
Overall mean pH
After 1 minute
After 2 minutes
After 10 minutes
The pH value of the substance was studied under GLP in accordance with
OECD TG 122, using a calibrated pH meter. Two test solutions at a
nominal concentration of 1% w/v were prepared by diluting aliquots of
test substance (1.0275 and 1.0100 g) to 100 mL of high purity water
(with a specification of resistance of >15 MΩ and a typical TOC content
of 20 ppb). Each sample was then transferred to a sample cup and allowed
to settle for a period of 1 minute before the pH value was determined. A
second reading was done after 2 minutes. As the difference between the
two readings did not exceed 0.1 pH units, a third reading after 10
minutes was not required. The results of the measurements were 2.21 and
2.23, giving a mean pH value of 2.22 at a concentration of 1% w/v and a
temperature of 20 °C.
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