Registration Dossier
Registration Dossier
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EC number: 234-217-9 | CAS number: 10599-90-3
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Description of key information
The free alkalinity was determined to be 0.0914 NaOH (%mass/mass) with a pH of 13.36 in a test performed in compliance with GLP and according to a standardized method.
Additional information
The alkalinity was determined by titration with standardised strong acid using electrometric end point determination. Then, an aliquot (10 mL) of 1% w/v monochloramine solution was transferred into a conical flask (250 mL) containing water (100 mL) and mixed gently. The weight of sample added was recorded. The resultant solution was titrated with standard hydrochloric acid (1M) to the end point (pH 7). This was conducted in duplicate. The alkalinity was calculated as NaOH (% mass/mass) using the following equation: A = 0.4001 × s × c / w.
Where:
A = Alkalinity, calculated as NaOH (% mass/mass)
s = Volume of hydrochloric acid titrant
c = Normality of hydrochloric acid titrant
w = Sample weight (g)
0.4001 = NaOH conversion factor
The free alkalinity was determined to be 0.0914 NaOH (%mass/mass) with a pH of 13.36.
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