1310-73-2 | Sodium Hydroxide

Chemical type

• Strong inorganic base
• Alkali hydroxide

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• Alkali metal hydroxide

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• Alkaline aqueous etchant

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Key properties

• Highly alkaline
• Strong CO₂ absorption capacity
• Reacts readily with acidic gases
• Corrosive but chemically stable

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• pH adjustment agent
• Precipitating agent for Fe(OH)₃

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• Highly selective for femtosecond laser-modified fused silica (etching contrast up to 1:600)
• Etching rates depend on concentration (optimal at 1 M), temperature (35–75 °C), and time
• Safer and more environmentally friendly than Hydrofluoric Acid (HF)
• Causes exponential etching dynamics with saturation in track length
• Etching rate of pristine material ~0.098 µm/h at 60 °C

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• Raises seawater pH in Ocean Alkalinity Enhancement (OAE)
• Enhances CO₂ drawdown from the atmosphere into seawater
• Used as an absorbent or pH-swing reagent in marine non-biological CDR

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• Iron precipitation from leachate

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• Etchant in FLICE process for fabricating nanochannels
• Dissolving irradiated tracks to create high-aspect-ratio hollow structures
• Alternative to HF and KOH for micromachining fused silica

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Classification by use

• Chemicals used to increase alkalinity
• Chemicals used in carbon dioxide removal
• Chemicals used in pH-swing separation processes

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• pH control and precipitation agents

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• Chemicals used as selective etchants
• Green alternatives in laser-assisted fabrication
• Agents for nanostructuring in glass materials

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A trustworthy factory and manufacturer

Demei Chemical Technology Co., Ltd. is a modern high-tech enterprise integrating R&D, production, and sales. The company's founder, Dr. Arron, born in April 1975, graduated from the School of Mechanical Engineering at Yanshan University and has been engaged in research in the fields of mechanical engineering and chemical synthesis for many years. The company's products focus on the chemical industry, primarily dealing in chemical raw materials and chemical production machinery and equipment. With its strong technical capabilities, advanced production equipment, and strict quality management system, the company has earned the trust of customers worldwide.

1. [Cite:1] A Comparative Review of terrestrial and marine carbon dioxide removal (CDR) methods, Carbon Capture Science & Technology, Volume 18, March 2026, 100550
2. [Cite:2] Hydrometallurgical valorization of strontium ferrite magnet sludge for the selective production of high-purity hematite (α-Fe2O3) and strontium carbonate (SrCO3), Current Research in Green and Sustainable, Chemistry Volume 12, 2026, 100507
3. [Cite:3] Nanochannels in Fused Silica through NaOH Etching Assisted by Femtosecond Laser Irradiation, Materials, 2024, 17(19), 4906