Supplier of Caustic Soda Flakes from Turkey & UAE
Caustic Soda Flakes (NaOH) Overview
If you work in manufacturing, from producing everyday soap to treating our water supply, you’ve likely encountered Caustic Soda Flakes. Known scientifically as sodium hydroxide (NaOH), these white, crystalline flakes are a cornerstone of modern industry. But what exactly makes them so indispensable?
In simple terms, Caustic Soda Flakes are a highly versatile and powerful alkaline chemical. They dissolve instantly in water, releasing heat and creating a potent solution perfect for cleaning, breaking down organic matter, and driving countless chemical reactions. Whether you’re a plant manager sourcing raw materials or a chemist developing new products, understanding this compound is key to both efficiency and safety.
Physical and Chemical Properties of Caustic Soda Flakes
A clear understanding of caustic soda flakes’ properties is essential for safe handling and effective industrial use:
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Chemical Formula: NaOH
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Molar Mass: 40.00 g/mol
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Appearance: White, flat crystalline flakes
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Odor: Odorless
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Density: 2.13 g/cm³ (solid)
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Melting Point: 318°C
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Boiling Point: Decomposes before boiling
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Solubility: Highly soluble in water (up to 1,000 g/L at 20°C); releases heat upon dissolution
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Alkalinity (pH): 12–14
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Reactivity: Reacts strongly with acids, certain metals (e.g., aluminum), and moisture; generates exothermic reactions with water
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Corrosiveness: Highly corrosive to skin, metals, and organic materials
These properties make NaOH flakes an essential base chemical for pH regulation, neutralization, and synthesis across multiple industries.
How Are Caustic Soda Flakes Manufactured?
Commercial Caustic Soda Flakes are produced through the chlor-alkali process, which remains the global industry standard in 2026 due to its efficiency and product purity.
- Electrolysis of Brine: A purified sodium chloride (NaCl) solution undergoes electrolysis, producing sodium hydroxide solution, chlorine gas, and hydrogen gas.
- Concentration & Purification: The sodium hydroxide solution is evaporated and refined to remove impurities and achieve the desired concentration.
- Flake Formation: The concentrated NaOH melt is cooled and solidified into thin flakes.
- Drying & Packaging: Finished caustic soda flakes are dried and packed in moisture-resistant packaging to prevent degradation during storage and transport.
Grades of Caustic Soda Flakes
Caustic soda flakes are supplied in different grades to meet specific technical, regulatory, and industrial requirements:
- Technical Grade (96–98%) – Used for general industrial applications such as soap manufacturing, textile processing, and water treatment.
- Industrial Grade (98–99%) – Suitable for oil refining, alumina extraction, pulp and paper production, and heavy chemical industries.
- Food Grade (≥99%) – Approved for controlled food processing applications such as olive curing, fruit and vegetable peeling, and CIP systems.
- Pharmaceutical Grade (≥99.5%) – Used in drug synthesis, cosmetics, and healthcare products requiring high purity.
- Reagent Grade (≥99.5%) – Designed for laboratories, analytical chemistry, and R&D applications.
Where Are Caustic Soda Flakes Used?
While many know it for cleaning, Caustic Soda Flakes are the “heavy lifters” of the chemical world. Their ability to act as a strong base, a nucleophile, and a precipitant makes them vital across a vast spectrum of industries.
Soap and Detergent Manufacturing
This is the most recognizable use of Caustic Soda Flakes. Through a process called saponification, sodium hydroxide flakes react with fats and oils to convert them into soap and glycerol. High-quality flakes ensure the soap is firm and cures correctly. They are also the primary alkaline agent in anionic surfactants (like LABSA) used in laundry powders and industrial detergents.
Oil and Gas (Drilling Muds)
In the energy sector, sodium hydroxide flakes are critical for formulating Drilling Fluids (Mud). They are used to:
- Control pH: Maintaining a high pH prevents the mud from becoming acidic and corroding the drill bit.
- Neutralize Acid Gases: They effectively neutralize Hydrogen Sulfide (H₂S) and Carbon Dioxide (CO₂) encountered in rock formations.
- Disperse Clays: They help dissolve and disperse clays, ensuring the drilling fluid maintains the correct viscosity.
Water and Wastewater Treatment
Municipalities and factories rely on Caustic Soda Flakes for regulatory compliance.
- pH Neutralization: It raises the pH of acidic industrial wastewater before it is discharged.
- Heavy Metal Precipitation: By increasing alkalinity, it traps hazardous metals (like lead and copper) as solid hydroxides, allowing them to be filtered out easily.
- Water Softening: It aids in the removal of calcium and magnesium hardness.
Pulp and Paper Production
The “Kraft process” is the dominant method for making paper, and sodium hydroxide flakes are its fuel. They are dissolved to create “White Liquor,” which digests wood chips. This chemical action separates the pure cellulose fibers from lignin (the glue holding wood together), creating the pulp needed for paper and cardboard. It is also used in the bleaching stage to brighten the final paper product.
Alumina and Aluminum Production
Before aluminum becomes a metal sheet, it starts as bauxite ore. The Bayer Process uses a strong solution of sodium hydroxide flakes to dissolve the alumina from the ore, separating it from impurities like “red mud.” Without this chemical digestion, the mass production of aluminum for cars and construction would be impossible.
Textile Processing (Mercerization)
Sodium hydroxide flakes are essential in the textile industry for processing cotton. In a process called mercerization, cotton fabric is treated with a caustic solution. This swells the fibers, resulting in:
- Increased tensile strength.
- Better absorption of dyes (brighter colors).
- A smoother, lustrous finish.
Food Industry Applications
Food-grade sodium hydroxide flakes are strictly regulated but essential. They are used for:
- Chemical Peeling: Removing skins from potatoes, tomatoes, and fruits efficiently.
- Olive Curing: Removing the natural bitterness from olives.
- Pretzel Making: Giving pretzels their characteristic brown crust and chewy texture.
- CIP (Clean-In-Place): Sanitizing dairy and beverage piping systems by dissolving fats and proteins.
Chemical Synthesis and Pharmaceuticals
As a fundamental feedstock, sodium hydroxide flakes are used to manufacture a wide array of other chemicals, including solvents, plastics, and synthetic fibers. In the pharmaceutical sector, they are used to synthesize common drugs like aspirin, anticoagulants, and cholesterol-reducing medications by neutralizing acidic components during reaction phases.
Caustic Soda Flakes Shipping Process
Given their classification as Dangerous Goods (Class 8, UN 1823), the logistics of Caustic Soda Flakes require strict adherence to international safety standards.
We leverage the strategic location of our production facilities in the Middle East to offer efficient shipping routes to global markets, including Africa, Europe, and Asia. Flakes are typically loaded into 20 ft. containers (holding approx. 25 MT), ensuring they remain dry and stable during ocean freight. Our logistics team handles all MSDS documentation and customs clearance to ensure a smooth delivery to your port.
Handling and Storage of NaOH Flakes
Due to its corrosive nature, proper handling of NaOH flakes is essential:
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Store in airtight, moisture-proof containers in cool, dry, ventilated areas.
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Avoid contact with acids, metals, and moisture to prevent hazardous reactions.
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Wear PPE: chemical-resistant gloves, goggles, a face shield, and protective clothing.
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For spills: neutralize with dilute acids (like vinegar or citric acid) before washing.
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In case of contact: flush skin or eyes with plenty of water and seek medical help.
Caustic Soda Flakes Packaging
Caustic soda flakes are packed in 25 kg two-layer laminated PP bags to prevent moisture and preserve chemical stability. For larger shipments, these bags are combined into 1,250 kg jumbo bags or pallets to simplify handling and optimize transport.
Caustic Soda Flakes Shipping and Container Loading
As a Dangerous Good (UN 1823, Class 8), caustic soda flakes are shipped in compliance with IMDG and international transport regulations.
- Standard Container: 20 ft container
- Loading Capacity: Approx. 25 metric tons
Our logistics network enables efficient export to Africa, Europe, Asia, and other global markets, supported by complete documentation including MSDS, CO, CI, and Packing List.
Your Trusted Caustic Soda Flakes Supplier
As an established Caustic Soda Flakes Supplier, we deliver consistent quality, competitive pricing, and dependable global supply. Our sodium hydroxide flakes meet international quality standards and are supported by professional technical and logistics teams.
Contact us today to request a quotation, technical data sheet, or sample, and let us support your industrial requirements with a reliable caustic soda flakes supply solution
FAQ
The key is safety and control due to the highly exothermic reaction.
- Use PPE: Always wear a face shield, chemical goggles, gloves, and an apron.
- Correct Order: ALWAYS add flakes slowly to water, never vice versa, to prevent a violent eruption.
- Control Heat: Use cool water and stir continuously to dissipate heat and prevent “hot spots.”
Yes. For sensitive applications like catalysis or pharmaceutical synthesis, we offer a Reagent Grade with a purity of ≥99.5%. This grade undergoes additional purification to minimize heavy metals (like Iron and Nickel) to levels below 10 ppm. Contact our technical team to discuss your specific CoA requirements.
Caking is caused by moisture absorption. To prevent it:
- Store bags in a cool, dry, well-ventilated warehouse.
- Use first-in, first-out (FIFO) inventory management.
- Keep bags sealed and on pallets, away from damp floors and walls.
If caking occurs, the product is still chemically active but may require mechanical breaking.
Absolutely. Our flakes are classified under UN 1823, Class 8 (Corrosive). We package them in 25 kg, multi-layer, waterproof polypropylene bags that are fully compliant with IMDG Code regulations for sea transport. We provide all necessary dangerous goods documentation for smooth shipping.
Our standard technical grade Caustic Soda Flakes have a minimum assay of 99.0-99.3% NaOH. The primary impurities are trace amounts of sodium carbonate (Na₂CO₃) and sodium chloride (NaCl). We provide a detailed Certificate of Analysis (CoA) with each shipment to ensure it meets your process specifications.
Specification of Caustic Soda Flakes
| CONTENT | TEST RESULT | UNIT |
|---|---|---|
| Al2O3 | Max 3 | PPM |
| Fe | 10 | PPM |
| Heavy Metals as Pb | Max 2 | PPM |
| Insoluble in Water | 0 | %W |
| Na2CO3 | 0.43 | %W |
| Na2SO4 | 0.0047 | %W |
| NaCl | 0.0085 | %W |
| NaOH | 98%±1 | %W |
| SiO2 | 0.0019 | %W |
| SHAPE | 0.3-1 | CM³ |
For Download Technical Data Sheets of Caustic Soda Flakes (Click Here)
