![]() It plays a crucial role in several later stages of bleaching the brown pulp emerging from the pulping process. Sodium hydroxide is broadly applied in the pulping of wood for creating paper or regenerated fibers. Treating with sodium hydroxide eliminates sulfurous impurities through reaction with weak acids. The process known as caustic washing utilizes caustic soda to clean and improve low quality crude oil. ![]() Additionally, caustic soda neutralizes any acid gas encountered in the geological formation as drilling progresses. ![]() ![]() It increases the mud viscosity and alkalinity in bentonite mud systems. In the petroleum industry, sodium hydroxide is utilized as an additive in drilling mud. Other applications include the manufacturing of sodium salts and detergents, pH regulation, and organic synthesis. Around half of the sodium hydroxide production is used by manufacturers, prevalently in the paper industry.
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