Concentration determination of sodium hydroxide (NaOH) solutions
Sodium hydroxide (NaOH) in its dissolved form is widely used in various industrial processes. Measuring the density of NaOH solutions provides a fast and reliable method for determining their concentration.
Sodium hydroxide, also known as lye or caustic soda finds widespread use in various concentrations. Concentration determination is therefore essential for a smooth production process of various chemicals and products including plastics, resins, adhesives, coatings, herbicides, paints, pharmaceuticals, soap and detergents, textiles, glass, and ceramics. It also plays an important role in water treatment, aluminum production, and oil refining as well as in the pulp and paper industry.
One method for concentration determination of sodium hydroxide solutions is titration, where correct and precise results are neither trivial nor quick. Besides, the operator is exposed to the caustic sample. Another method is the determination of the solution’s density and concentration. This alternative is fast, accurate, and safe as the operator’s exposure to the lye is minimized.
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