Sodium Hydroxide
Sodium Hydroxide
Product Specifications
| CAS Number | 1310-73-2 |
|---|---|
| Purity / Assay | 99% flakes |
| Packaging | 25kg bags, 1000kg jumbo bags |
| Country of Origin | India |
| MOQ | 500 kg |
| Lead Time | 7-10 days |
Industries Served & Applications
Common Applications
Soap manufacturing, water treatment pH adjustment, metal processing, chemical synthesis.Product Benefits
-
High Purity (99%+ NaOH)
Meets IS 252, ASTM, and food-grade standards for industrial and food applications -
Consistent Flake Size
Uniform flakes ensure consistent dissolution rate and handling characteristics -
Low Chloride Content
High-purity grade with chloride below 200 ppm for sensitive applications -
Low Heavy Metals
Heavy metal content well within pharmacopoeial limits for pharmaceutical use -
Multiple Forms Available
Available as flakes, pellets, micropearls, and 50% liquid solution -
Strong Supply Network
Reliable sourcing ensures consistent availability even during peak demand periods
Manufacturing Process
Brine Purification
Sodium chloride brine is purified by precipitation of calcium, magnesium, and iron impurities using sodium carbonate and caustic soda
Electrolysis (Membrane Cell)
The purified brine is electrolysed in membrane cell technology. The membrane separates the cell into anolyte (chlorine production) and catholyte (NaOH formation) compartments
Caustic Formation
At the cathode, water is reduced to hydrogen gas and hydroxide ions. Sodium ions migrate through the membrane and combine with hydroxide to form NaOH
Concentration
The dilute NaOH (30-33%) is concentrated in a multiple-effect evaporator system to 48-50% for liquid caustic, or further to 99% for solid forms
Flaking (Solid Form)
The molten 99% NaOH is fed to a flaking drum where it solidifies into thin flakes. The flakes are broken to the required size
Cooling & Packaging
Flakes are cooled in a nitrogen-purged cooling conveyor and packed immediately in moisture-proof HDPE-lined bags to prevent carbonation
QC Testing
Each batch is tested for assay (acid titration), sodium carbonate, chloride, sulphate, iron, and heavy metals
Storage
Store in airtight containers in a cool dry environment. Avoid exposure to CO₂ and moisture to prevent carbonation
Why Choose Zentish Exim for Sodium Hydroxide
Consistent Quality
Tight assay range (±0.5%) and low impurity profile — every batch certified
Multiple Forms
Flakes, pellets, micropearls, and liquid — all from a single supplier
Food Grade Available
FCC-grade sodium hydroxide for food processing with full certifications
Packaging Flexibility
25 kg / 50 kg HDPE bags with liners, 1 MT jumbo bags, or bulk tankers for liquid
Technical Support
Application guidance for soap making, water treatment, chemical manufacturing, and food processing
Frequently Asked Questions
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