1. Product Introduction & Main Application
Arnico’s Caustic Soda (Sodium Hydroxide) is a strong, versatile alkali, supplied in two physical forms: as a liquid (50% concentration) and as solid flakes (purity ≥ 99%). As an unparalleled industrial base, this substance plays a vital role in pH regulation, acid neutralization, bleaching, and the production of numerous chemical and consumer products, standing as a fundamental pillar of the modern chemical industry.
2. Technical Specifications
| Technical Parameter | Liquid Grade 50% | Flake Grade | Unit |
|---|---|---|---|
| Purity (as NaOH) | 50.0 ± 0.5 | ≥ 99.0 | % |
| Appearance | Clear, colorless liquid | White flakes | – |
| Sodium Chloride (NaCl) | ≤ 0.05 | ≤ 0.2 | % |
| Sodium Carbonate (Na₂CO₃) | ≤ 0.4 | ≤ 0.8 | % |
| Iron (Fe) | ≤ 10 | ≤ 30 | ppm |
| Density (20°C) – Liquid | 1.52 – 1.53 | N/A (Solid) | g/cm³ |
3. Features & Benefits
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Unmatched Alkaline Power: The fastest and most cost-effective method for raising pH and executing neutralization and saponification reactions.
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Two Optimized Supply Forms: Liquid form for easy and safe high-volume dosing; flake form for better transport economics and non-aqueous reactions.
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Precise Impurity Control: Minimal iron and chloride content to prevent precipitation and contamination in sensitive processes.
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High Purity: Produced using membrane technology, offering a product free from heavy metals and mercury.
4. Industrial Applications
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Soap & Detergent Industry: A key component in the saponification reaction of fats for the production of solid and liquid soap.
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Pulp & Paper Industry: The primary chemical in the Kraft process for dissolving lignin and bleaching wood pulp.
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Textile Industry: The mercerization process for cotton, enhancing its strength, luster, and dye absorption.
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Water & Wastewater Treatment: A pH adjuster, a neutralizer for free acids, and a regenerant for ion exchange columns.
5. Safety & Handling
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MSDS (Material Safety Data Sheet): This substance is extremely corrosive and hazardous; skin and eye contact cause immediate, severe chemical burns. A detailed study of the Arnico MSDS is mandatory before any handling.
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Storage Conditions (Liquid 50%): To prevent crystallization, store above +15°C in stainless steel (316) or lined polyethylene tanks, away from acids, and light metals (aluminum, tin, zinc). Freezing must be strictly prevented.
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Storage Conditions (Flakes): Extremely hygroscopic and absorbs CO₂ from the air. Must be stored in completely sealed bags in a dry, cool place.
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Personal Protective Equipment (PPE): The use of full acid-resistant clothing, long neoprene or PVC gloves, rubber boots, a face shield, and chemical goggles is mandatory for any decanting or sampling operation.
6. Quality Assurance & COA
All Arnico Caustic Soda shipments (both liquid and flake) are transported with a Certificate of Analysis (COA) based on serial production number, accurately specifying the concentration, hydroxide, chloride, and carbonate content according to ASTM E291 standards.
