Caustic Soda Latest News
The Environment (Protection) Second Amendment Rules, 2025 require caustic soda plants using membrane cell technology to pass a fish-survival test for wastewater toxicity.
About Caustic Soda
- Caustic soda, also known as sodium hydroxide, is one of India’s most widely used industrial chemicals.
- Other names: Lye, soda lye, and sodium hydrate.
- It is produced by the electrolysis of aqueous solutions of sodium chloride (brine) or by reacting naturally occurring sodium carbonate with calcium hydroxide.
Properties of Caustic Soda
- This compound is an alkali – a type of base that can neutralize acids and is soluble in water.
- At room temperature, sodium hydroxide is a white crystalline odorless solid that absorbs moisture from the air
- When dissolved in water or neutralized with acid it liberates substantial heat.
- Its solution appears as a colorless liquid and more dense than water.
- Its contact may severely irritate skin, eyes, and mucous membranes.
- It is corrosive to metals and tissue.
Applications of Caustic Soda
- It is used in industries such as soap, detergents, paper, textiles, aluminium, petrochemicals and water purification.
- It is also used in processing cotton fabric, laundering and bleaching, metal cleaning and processing, oxide coating, electroplating, and electrolytic extracting.
Source: DTE
Last updated on June, 2026
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Caustic Soda FAQs
Q1. Caustic Soda is produced mainly by which process?+
Q2. What is the nature of Caustic Soda solution?+
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