Caustic Soda Flakes Supplier — Sodium Hydroxide (NaOH) from Turkey & UAE
Caustic Soda Flakes Supplier — Sodium Hydroxide (NaOH) from Turkey & UAE
High-purity caustic soda flakes (98–99% sodium hydroxide) for industrial buyers and export markets worldwide. Shipped in bulk from Jebel Ali (UAE) and Mersin (Turkey) with a Certificate of Analysis per batch, full UN 1823 / IMDG documentation, and a formal FOB/CIF quote within 24 hours.
In short — Caustic soda flakes are the high-purity solid form of sodium hydroxide (NaOH, CAS 1310-73-2), typically 98–99% pure, supplied as white, hygroscopic flakes classified UN 1823 (Class 8) under HS Code 2815.11. As a bulk caustic soda flakes supplier, we export NaOH flakes from Turkey and the UAE for soap manufacturing, water treatment, alumina refining, pulp & paper, textiles and oil & gas — with batch COA, UN 1823 packaging, and 24-hour quotes for wholesale and export buyers.
What Are Caustic Soda Flakes?
Caustic soda flakes are the solid, flaked form of sodium hydroxide (NaOH) — one of the most essential alkaline base chemicals in modern industry. These white, hygroscopic crystalline flakes deliver powerful chemical reactivity, which makes them indispensable across water treatment, soap and detergent production, petroleum refining and alumina extraction. As an established caustic soda flakes supplier, we manufacture and export NaOH flakes that consistently meet international purity standards of 98–99%.
Compared with liquid caustic soda, the solid flake form offers clear advantages for export and wholesale buyers: superior storage stability, far lower transportation cost (no shipping of water weight), and precise dosing for batch processing. The formula NaOH represents a compound with a molar mass of 40.00 g/mol, strong alkalinity (pH 12–14 in solution), and a highly exothermic reaction on dissolution. For procurement managers comparing a sodium hydroxide supplier, understanding these specifications is critical for process design, safety planning and compliance.
📊 Market Insight (2026): The global caustic soda flakes market reached roughly 34 million tonnes in 2025 and is projected to grow at a CAGR of about 1.6–1.7% through 2034, driven by alumina refining, pulp & paper, water treatment and chemical processing. China holds an estimated 35–40% of global production capacity, keeping Asia-Pacific pricing under pressure through H1 2026, while energy costs and chlor-alkali operating rates remain the key swing factors. Export buyers are increasingly consolidating supply around dual-origin (Turkey + UAE) partners to reduce single-source risk.
Sources: IMARC Group, ChemAnalyst, Intratec — 2025–2026 market data.
Physical & Chemical Properties
A clear understanding of NaOH flake properties is essential for safe handling, accurate process design and effective application. The table below summarizes the key specifications that buyers and engineers evaluate when selecting caustic soda flakes and a supplier.
| Property | Specification |
|---|---|
| Chemical Formula | NaOH |
| CAS Number | 1310-73-2 |
| HS Code | 2815.11 (solid sodium hydroxide) |
| Molar Mass | 40.00 g/mol |
| Appearance | White, flat crystalline flakes |
| Odor | Odorless |
| Density | 2.13 g/cm³ (solid) |
| Melting Point | 318 °C (604 °F) |
| Boiling Point | 1,388 °C (decomposes) |
| Water Solubility | Highly soluble — up to 1,110 g/L at 20 °C |
| pH (1% solution) | 12–14 |
| Heat of Dissolution | −44.5 kJ/mol (strongly exothermic) |
| Hygroscopicity | Rapidly absorbs moisture from air |
| Reactivity | Reacts vigorously with acids, aluminium, zinc, tin, organics |
| Corrosiveness | Highly corrosive to skin, eyes, metals, tissue |
| UN Classification | UN 1823, Class 8 (Corrosive Substance) |
| NaOH Content | 98% ± 1 (industrial grade) |
★ Full Technical Data Sheet (TDS) and Safety Data Sheet (SDS) supplied with every order, available on request prior to ordering.
Caustic Soda Flakes TDS & Typical Analysis
The table below shows the typical batch analysis for our industrial-grade caustic soda flakes (NaOH 98% ± 1). Each shipment is accompanied by a batch-specific Certificate of Analysis (COA) confirming these values, so export and wholesale buyers can verify purity against their own process specifications before clearance.
| Content | Test Result | Unit |
|---|---|---|
| Al₂O₃ | Max 3 | PPM |
| Fe (Iron) | 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 |
| Flake Size | 0.3 – 1 | cm |
Caustic Soda Flakes Grades We Export
Caustic soda flakes are produced in several purity grades, each designed for specific technical, regulatory and safety requirements. Choosing the correct grade is essential for performance, compliance and cost efficiency — our export team helps buyers match grade to application.
Industrial Grade
Our most requested grade for export. Used in oil refining, alumina extraction (Bayer process), pulp & paper, soap making, textiles and heavy chemical manufacturing. The optimal balance of purity, performance and cost for large-scale operations.
Food Grade
Produced under GMP conditions and approved for controlled food processing — olive curing, chemical peeling of fruits and vegetables, pretzel glazing, and Clean-In-Place (CIP) sanitation in dairy and beverage facilities.
Pharmaceutical Grade
Manufactured to pharmacopoeia standards (USP/EP) for drug synthesis, cosmetic formulations and healthcare products requiring documented high purity and full batch traceability.
Reagent / Lab Grade
For analytical chemistry, R&D and sensitive catalytic processes. Additional purification reduces heavy metals such as iron and nickel to below 10 ppm, with certifiable purity.
Flakes vs Pearls vs Liquid
A common question procurement teams ask a caustic soda flakes supplier is how flakes compare to other forms. Here is a practical comparison to guide selection between flakes, caustic soda pearls and liquid caustic soda.
| Factor | Flakes | Pearls (Prills) | Liquid (50%) |
|---|---|---|---|
| NaOH Content | 98–99% | 98–99% | 48–50% |
| Dissolution Speed | Fast (high surface area) | Moderate | Immediate |
| Storage Life | 12+ months sealed | 12+ months sealed | 6–12 months |
| Transport Cost | Low (concentrated solid) | Low | High (ships 50% water) |
| Dust Generation | Moderate | Low | None |
| Dosing Precision | Excellent for batch | Good | Best for continuous |
| Packaging | 25 kg bags, 1.25 MT FIBC | 25 kg bags, 1 MT FIBC | IBC / ISO tanks |
| Best For | Soap, water treatment, textiles, oil & gas | Cleaning, food processing | Continuous processes |
Key insight for export buyers: flakes are often preferred for operations needing high-purity solid NaOH, flexible batch dosing and cost-effective international shipping. Their solid form eliminates the freight penalty of shipping water — a significant advantage for overseas buyers working with an export-focused caustic soda flakes supplier.
Where Are Caustic Soda Flakes Used?
Often called the “heavy lifters” of the chemical world, caustic soda flakes act as a strong base, a nucleophile and a precipitant — making NaOH flakes vital across a wide spectrum of industries that our export buyers serve.
Soap & Detergent
Through saponification, sodium hydroxide flakes react with fats and oils to form soap and glycerol. Also the primary alkaline agent for anionic surfactants such as LABSA in laundry powders and detergents.
Oil & Gas (Drilling Muds)
Used to control pH in drilling fluids, neutralize acid gases (H₂S, CO₂) in rock formations, and disperse clays to maintain correct mud viscosity.
Water & Wastewater
Raises pH of acidic effluent before discharge, precipitates heavy metals as insoluble hydroxides, and assists water softening by removing calcium and magnesium hardness.
Pulp & Paper
In the Kraft process, NaOH flakes are dissolved into “white liquor” that digests wood chips, separating cellulose fibres from lignin to create pulp, and assist in the bleaching stage.
Alumina & Aluminium
The Bayer process uses a strong sodium hydroxide solution to dissolve alumina from bauxite ore, separating it from impurities — a foundation of large-scale aluminium production.
Textile (Mercerization)
Treating cotton with caustic solution swells the fibres, increasing tensile strength, dye uptake (brighter colours) and giving a smoother, lustrous finish.
Food Processing (Food Grade)
Strictly regulated uses include chemical peeling of fruits and vegetables, olive curing to remove bitterness, pretzel and bagel glazing, and CIP sanitation in dairy and beverage lines.
Chemical & Pharma Synthesis
A fundamental feedstock for solvents, plastics and synthetic fibres, and used in pharmaceutical synthesis by neutralizing acidic components during reaction phases.
How Caustic Soda Flakes Are Made
Commercial NaOH flakes are produced through the chlor-alkali electrolysis process — the global industry standard for efficiency, scalability and high purity. As a vertically integrated supplier, we control quality at every stage from brine purification to export documentation.
Electrolysis of Brine
A purified sodium chloride (NaCl) brine is electrolyzed in a membrane cell, producing sodium hydroxide solution at the cathode, chlorine gas at the anode, and hydrogen as a byproduct.
Concentration & Purification
The dilute NaOH (30–35%) passes through multi-effect evaporators that remove water, while trace impurities — sodium chloride, sodium carbonate and iron — are reduced to target purity.
Flake Formation
Concentrated molten NaOH is fed onto cooled rotating drum or belt flakers, solidifying into thin, uniform flakes that are scraped off and collected.
Drying & Packaging
Final moisture removal precedes sealing in multi-layer, moisture-resistant packaging — critical because NaOH is highly hygroscopic and degrades or cakes if exposed to humid air.
Packaging & Dangerous Goods Compliance
As a UN 1823 Class 8 corrosive substance, caustic soda flakes require specialized handling across the supply chain. We ensure full compliance with IMDG, ADR and RID regulations and manage the complete export logistics chain for bulk and wholesale buyers.
| Package Type | Net Weight | Construction | Per Container |
|---|---|---|---|
| Standard Bags | 25 kg | Multi-layer PE/PP laminated, heat-sealed | 1,000 bags (25 MT) |
| Jumbo Bags (FIBC) | 1,250 kg | UV-stabilized with PE liner | 20 bags (25 MT) |
| Palletized Units | 1,000 kg | 40 × 25 kg bags per pallet | 25 pallets (25 MT) |
Export Documentation With Every Shipment
Why Buy From a Professional Caustic Soda Supplier
Large-volume and export buyers need more than a price list. They need a sodium hydroxide supplier that guarantees batch consistency, absorbs logistics complexity and maintains supply continuity across annual contracts. Here is what differentiates our offer.
Safe Handling & Storage Protocols
Proper handling of corrosive caustic soda flakes is essential for worker safety and product integrity. We supply a complete SDS with every order and advise on safe handling per your destination country's framework. For independent reference, see the NaOH safety profile on PubChem.
Storage
Keep in original, sealed moisture-proof containers in a cool, dry, ventilated area (<30 °C, <60% humidity). Separate from acids, aluminium, zinc and organics. Max stack height: 3 pallets.
PPE
Chemical-resistant gloves (butyl/nitrile ≥0.4 mm), face shield and splash goggles, corrosion-resistant apron, closed-toe footwear, and an eyewash station and safety shower within 10 metres.
First Aid
Skin/eye contact: flush immediately with copious water for at least 15 minutes and seek medical attention; for eyes, hold eyelids open and get ophthalmological care.
Spill Response
Cover with absorbent material and neutralize residue with dilute acetic or citric acid solution (pH 6–8) before water washing. Never add water directly to large dry spills.
Critical: When preparing a solution, ALWAYS add flakes slowly to water — never water to flakes. The reaction is strongly exothermic and the wrong order can cause a violent eruption.
Ready to Order Caustic Soda Flakes in Bulk?
Share your required grade, annual volume in MT, destination port and preferred incoterm. Our export team responds within 24 hours with a formal FOB or CIF price, lead time and a tailored logistics plan — from a caustic soda flakes supplier whose quality you can measure, batch by batch.
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Our Export Team
We respond to all caustic soda flakes inquiries within 24 business hours — usually faster. For urgent supply or large-volume tenders, WhatsApp is the fastest channel.
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FAQ — Caustic Soda Flakes
What is the minimum order quantity (MOQ) for caustic soda flakes?
Our standard MOQ for caustic soda flakes is 25 metric tons (1 × 20' FCL). For buyers with regular monthly volumes of 5–20 FCL, we offer preferential long-term contract pricing and flexible loading schedules from Jebel Ali (UAE) or Mersin (Turkey).
What purity grade of caustic soda flakes do you export?
We export caustic soda flakes as 98–99% sodium hydroxide (NaOH). Industrial grade is 98% min NaOH; higher-purity grades up to 99.5% are available for food, pharmaceutical and reagent applications. Every shipment includes a batch-specific Certificate of Analysis (COA) covering NaOH content, Na₂CO₃, NaCl, iron and heavy metals.
How should caustic soda flakes be prepared into a 50% solution safely?
Always add the flakes slowly to water — never water to flakes — because the reaction is strongly exothermic. Use full PPE (face shield, goggles, gloves, apron), use cool water, and stir continuously to dissipate heat and avoid hot spots that can cause violent eruption.
How do you prevent caustic soda flakes from caking during storage?
Caking is caused by moisture absorption, since NaOH is highly hygroscopic. Store sealed bags in a cool, dry, well-ventilated warehouse on pallets away from damp floors, and use first-in first-out (FIFO) rotation. If caking occurs, the flakes are still chemically active but may need mechanical breaking.
Are your caustic soda flakes compliant with UN packaging standards for sea freight?
Yes. Caustic soda flakes are classified as UN 1823, Class 8 (Corrosive). We pack them in 25 kg multi-layer, moisture-proof PP/PE bags and 1,250 kg FIBC jumbo bags that comply with the IMDG Code for sea transport, and we supply the full dangerous-goods documentation package with every shipment.
What documents come with each caustic soda flakes shipment?
Every shipment includes a Certificate of Analysis (COA), Safety Data Sheet (SDS), Dangerous Goods Declaration (DGD), Certificate of Origin, Commercial Invoice and Packing List, plus IMDG compliance documentation. SGS or Bureau Veritas pre-shipment inspection is available on request.
What is the HS Code for caustic soda flakes?
The HS Code for solid caustic soda flakes (sodium hydroxide) is 2815.11 under the Harmonized System. The CAS number is 1310-73-2 and the UN number is UN 1823 (Class 8, corrosive). We prepare all export documentation with the correct classification for smooth customs clearance.
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