Complete explanation about Caustic Soda Flakes
Caustic Soda Flakes (Sodium Hydroxide – NaOH)
Overview
Caustic Soda Flakes, chemically known as Sodium Hydroxide (NaOH), are a highly alkaline, white, solid chemical produced mainly through the chlor-alkali process. It is one of the most widely used industrial chemicals worldwide due to its strong reactivity, versatility, and effectiveness in a broad range of applications.
Physical & Chemical Properties
- Chemical Formula: NaOH
- Appearance: White, odorless flakes
- Purity: Typically 98–99%
- Molecular Weight: 40 g/mol
- Solubility: Highly soluble in water (exothermic reaction)
- pH (solution): Strongly alkaline
- Hygroscopic: Absorbs moisture and CO₂ from air
Manufacturing Process
Caustic Soda Flakes are produced by electrolysis of sodium chloride (brine) using membrane cell technology. The liquid caustic soda obtained is then evaporated and flaked to form solid flakes suitable for packaging, storage, and transportation.
Packaging Options
Caustic Soda Flakes are commonly supplied in:
- 25 kg polypropylene bags (inner PE liner)
- Jumbo bags (1 MT / 1.2 MT)
Sodium Hydroxide Supplier – Zumrut International Kimya
Zumrut International Kimya is a reliable and experienced supplier of high-quality Caustic Soda Flakes (Sodium Hydroxide – NaOH), serving a wide range of industries across international markets. With a strong focus on quality assurance, efficient logistics, and long-term partnerships, we provide consistent and competitive supply solutions to our global clients.
Our Caustic Soda Flakes are produced using advanced membrane cell technology, offering high purity (98–99%), excellent solubility, and stable chemical performance. The product is suitable for critical applications in industries such as chemicals, pulp and paper, aluminum processing, textiles, water treatment, oil & gas, and detergents.
Zumrut International Kimya supplies Caustic Soda Flakes in neutral (non-branded) packaging, ensuring flexibility for distributors and end users. Standard packaging options include 25 kg PP bags with inner PE liners and jumbo bags, designed to protect the product from moisture and contamination during storage and transportation.
With a well-established logistics network, we ship Caustic Soda Flakes to all major ports worldwide. We are currently supplying Eastern European markets including Serbia, Croatia, and Bosnia, as well as South America (notably Brazil) and African countries such as Congo and Morocco. Our export operations are supported by reliable shipping lines, proper documentation, and compliance with international trade standards.
At Zumrut International Kimya, customer satisfaction is driven by consistent quality control, competitive pricing, timely delivery, and professional commercial support. We work closely with our partners to provide tailored supply solutions under various international trade terms, ensuring a smooth and dependable procurement experience.
Technical Data Sheet of Sodium Hydroxide Supplier
| 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 |
Caustic Soda Flakes Price December 2025
| Caustic Soda (FCA) Price | 1st Week | 2nd Week | 3nd Week | 4nd Week |
| Caustic Soda Flake (NaOH) 98-99% | 465$-485$ | 440$-445$ | 445$-455$ | 395$-420$ |


