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

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