Buffer solution, pH 4.0 ± 0.02 is used to establish and maintain an ion activity within narrow range. It is most commonly used to establish hydrogen-ion activity for the calibration of pH meters, in analytical procedures. It is also used to maintain stability of various dosage forms.
Zinc granules are unevenly shaped particles of zinc that are formed by pouring molten zinc into water. Zinc granules have a greater particle size as compared to zinc powder. Zinc is employed in the manufacture of hydrogen gas in the form of granules due to its enormous surface area.
Acetone Extrapure AR, 99.5%, is a high-purity solvent widely used in laboratories for analytical and synthesis applications. Its excellent solvency power and consistent performance make it essential for various chemical processes.
The invention relates to a method for producing calcium chloride dihydrate, which is characterized by comprising the following steps: putting hydrochloric acid (31%) and limestone powder into a reaction vat according to the mixture ratio of 2.2:1, and stirring for reaction to generate an acid calcium chloride solution; …
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