Related Article
- Chemical Structure & Production
- Physical & Chemical Properties
- Key Industrial Uses
- Why Buyers Choose Zümrüt Sodium Hydroxide Flake
- Packing, Logistics & Export Markets
- Safety & Handling
- Specification of Caustic Soda Flake
- Frequently Asked Questions
- Related Caustic Soda Products
- Need a Quotation for Caustic Soda Flake?
Chemical Export — Zümrüt International Kimya
Caustic Soda Flake (Sodium Hydroxide NaOH 98–99%)
Supplier from Turkey & UAE
Sodium Hydroxide Flake is the solid flake form of sodium hydroxide (NaOH), produced through the membrane-cell chlor-alkali process. Zümrüt International Kimya supplies 98–99% purity Caustic Soda Flake from Iskenderun and Mersin, Turkey, and Jebel Ali, UAE, packed in neutral 25 kg bags or 1,250 kg jumbo bags for industrial buyers worldwide.
| FormulaNaOH | Purity98–99% ±1 | FormWhite Flake | ProcessMembrane Cell | Packing25 / 1250 kg |
Chemical Structure & Production
Sodium hydroxide consists of sodium (Na⁺) and hydroxide (OH⁻) ions. It is typically produced via the chlor-alkali process, which involves the electrolysis of a sodium chloride (table salt) solution:
The liquid caustic soda obtained from electrolysis is then evaporated and flaked, producing the solid, low-dust flake form best suited for packaging, storage, and long-distance export.
Physical & Chemical Properties
| Appearance | White, crystalline solid (flakes) |
| Solubility | Highly soluble in water (exothermic) |
| Density | 2.13 g/cm³ |
| Melting Point | 318°C (604°F) |
| Boiling Point | 1,388°C (2,530°F) |
| NaOH Content | 98% ±1 |
Key Industrial Uses
| 01
Chemical Manufacturing Raw material for solvents, plastics, synthetic fibers, and adhesives. |
02
Pulp & Paper Used in wood pulping and the paper bleaching process. |
03
Textile Industry Cotton mercerization and pH control during dyeing. |
| 04
Water Treatment Neutralizes acids and adjusts pH in industrial water systems. |
05
Soap & Detergent Core saponifying agent converting fats and oils into soap. |
06
Food Processing Fruit/vegetable peeling and cocoa & chocolate processing. |
Why Buyers Choose Zümrüt Sodium Hydroxide Flake
| Low Dust, Easy HandlingFlake form generates far less dust than powder, reducing handling risk and spillage. | Highly SolubleDissolves readily in water, simplifying solution preparation at any concentration. |
| Non-FlammableSafer to store and transport than flammable industrial chemicals — though still corrosive. | Long Shelf LifeStored dry and sealed, flakes retain full effectiveness for extended bulk storage. |
Packing, Logistics & Export Markets
Sodium Hydroxide Flake is packed in 25 kg two-layer laminated PP bags, sealed against moisture, since sodium hydroxide is strongly hydrophilic. For bulk shipments, bags are loaded into 1,250 kg jumbo bags or onto pallets to reduce labor and freight costs. Food-grade flake is shipped in sealed metal containers for added moisture protection.
Currently supplying:
See this week’s FCA price range and packing options.
Safety & Handling
- Skin & Eye Contact: Highly corrosive; can cause severe burns. Use gloves, goggles, and protective clothing.
- Inhalation: Dust or mist can irritate or damage the respiratory tract.
- Ingestion: Can cause severe internal damage; treat as a medical emergency.
- Storage: Keep in a dry, cool place, away from moisture and acids.
- Environment: Spills can harm aquatic life; neutralize and dispose of properly.
Specification of Caustic Soda Flake
| Content | Test Result | Unit |
|---|---|---|
| NaOH | 98% ±1 | %W |
| Na2CO3 | 0.43 | %W |
| NaCl | 0.0085 | %W |
| Na2SO4 | 0.0047 | %W |
| SiO2 | 0.0019 | %W |
| Al2O3 | Max 3 | PPM |
| Fe | 10 | PPM |
| Heavy Metals as Pb | Max 2 | PPM |
| Insoluble in Water | 0 | %W |
| Shape | 0.3–1 | cm³ |
Frequently Asked Questions
What is Caustic Soda Flake used for?
Sodium Hydroxide Flake (NaOH 98-99%) is mainly used in soap and detergent production, pulp and paper bleaching, textile mercerization, water treatment pH adjustment, and as a cleaning agent in petroleum refining and industrial degreasing.
What is the purity of Zümrüt’s Caustic Soda Flake?
Zümrüt International Kimya supplies Caustic Soda Flake with 98%±1 NaOH purity, produced via the membrane-cell chlor-alkali process, with low Fe, heavy metals, and chloride content as shown in the specification table above.
How is Caustic Soda Flake packed for export?
Sodium Hydroxide Flake is packed in 25 kg two-layer laminated PP bags, which can be loaded into 1,250 kg jumbo bags or pallets for easier handling and reduced labor costs during loading and unloading.
Is Sodium Hydroxide Flake dangerous to handle?
Yes, Caustic Soda Flake is highly corrosive and can cause severe skin and eye burns. Protective gloves, goggles, and clothing are required during handling, and it must be stored in a dry, cool place away from moisture and acids.
Which countries does Zümrüt export Caustic Soda Flake to?
Zümrüt currently supplies Caustic Soda Flake to Eastern European markets such as Serbia, Croatia, and Bosnia, South American markets including Brazil, and African countries such as Congo and Morocco, with shipments to all major ports worldwide.
Related Caustic Soda Products
Liquid Caustic Soda →
Caustic Soda Pearls →
Caustic Soda Price →
Need a Quotation for Caustic Soda Flake?
Talk to our export team in Ankara, Turkey or Dubai, UAE for FCA pricing, packing options, and shipping schedules.
