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EC number: 640-509-0 | CAS number: 26621-44-3
1) The result of the preliminary test has proved that the water solubility is 1 g/L～10 g/L; the test method can then be designed as following: about 1.5 g of the sample should be taken and 100 mL of water be used.
2) The concentrations of the standard solutions are 0.02 g/50 mL, so the centrifuged solutions should be diluted as following: Pipette 2.00 mL of the centrifuged solution into a 25 mL volumetric flask, then dilute to mark with methanol and mix well: n = 12.5.
3) Determination results
The relative difference of the concentrations measured in the three flasks respectively:
A-B, 1.3 %; A-C, -2.8 %; B-C, -4.1 %
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