FIELD: chemistry.
SUBSTANCE: quantitative determination of potassium chloride is carried out by direct measurement of the wash water conductivity with a concentration from 0.10 to 2.25% at a temperature of 20°C, and the calculation of the chloride concentration is carried out according to the calibration chart or by the formula.
EFFECT: creation of an express method for the quantitative determination of chlorides in wash water used for the purification of ferrocin, which is easy to implement in production conditions and provides the pharmacopeial quality of the ferrocin substance, the optimum flow rate of washing distilled water, and also shortens the duration of the ferrocin purification and filtration stages.
3 dwg, 2 tbl
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