Caustic Soda Flakes 99% (Sodium Hydroxide, NaOH) — Wholesale Bulk Supplier
Caustic Soda Flakes 99% is a high-purity sodium hydroxide product manufactured for industrial-scale consumption across water treatment, pulp & paper, soap and detergent, and textile processing operations. Each production batch is manufactured under ISO-certified quality systems and validated against Certificate of Analysis (CoA) parameters prior to dispatch, ensuring consistent alkalinity, low chloride content, and minimal moisture pickup across shipments. Supply is structured for container-load procurement, with standard 25kg PP/PE bag packaging and full 20ft FCL (27 MT) capacity available for recurring or one-off bulk orders, supported by soda caustica (sodium hydroxide) documentation for both domestic and export buyers.
Technical Specifications
| Parameter | Specification |
|---|---|
| Chemical Formula | NaOH |
| CAS Number | 1310-73-2 |
| UN Number & Hazard Class | UN 1823, Class 8 (Corrosive), Packing Group II |
| Appearance | White opaque flakes, free-flowing, non-caking |
| Purity (NaOH assay) | ≥ 99.0% (min) |
| Sodium Carbonate (Na₂CO₃) | ≤ 0.5% |
| Sodium Chloride (NaCl) | ≤ 0.03% |
| Iron (as Fe₂O₃) | ≤ 0.005% |
| Moisture Content | ≤ 0.5% |
| Standard Packaging | 25 kg PP/PE laminated bags; 1,000 kg jumbo bags available on request |
Water & Wastewater Treatment
Used as a pH-correction and coagulation-aid alkali in municipal and industrial water treatment plants. Caustic Soda Flakes 99% neutralizes acidic effluent streams, adjusts pH ahead of coagulant dosing, and supports precipitation of heavy metals in industrial wastewater circuits. Low chloride content minimizes downstream corrosion risk in treatment infrastructure.
Pulp & Paper Manufacturing
Applied in the kraft pulping and bleaching process to break down lignin and facilitate delignification of wood fiber. Also used in deinking operations for recycled paper stock, where consistent NaOH assay is critical to maintaining brightness and yield targets across production runs.
Soap & Detergent Manufacturing
Serves as the primary saponification agent in fatty acid processing for bar soap and industrial cleaning compound production. Batch-to-batch purity consistency (≥99%) is essential for predictable reaction yield and finished-product pH stability.
Textile Processing
Used in mercerization of cotton fabrics to improve fiber strength, luster, and dye uptake, as well as in scouring processes to remove natural waxes and impurities prior to dyeing. Low iron content (≤0.005%) reduces the risk of fabric discoloration during processing.
Logistics, Packaging & MOQs
| Loading Configuration | Capacity |
|---|---|
| Floor-loaded, 20ft FCL | 27 MT (approx. 1,080 × 25kg bags) |
| Palletized, 20ft FCL | 22–24 MT (approx. 40 pallets, 22 bags/pallet) |
| Minimum Order Quantity (MOQ) | 1 × 20ft FCL (floor-loaded) |
Packaging & Handling Standards
- Primary packaging: 25 kg PP/PE laminated bags with moisture-barrier inner liner
- Palletized loads: shrink-wrapped, strapped, and stacked per UN Class 8 hazardous goods stacking limits
- Labeling compliant with UN 1823 Class 8 Corrosive hazard marking, GHS pictograms, and shipping name declaration
- Bulk jumbo bag (1,000 kg) and drum packaging available for buyers requiring mechanized handling at destination
Regulatory Compliance & Documentation
The following documents are available for procurement and customs clearance purposes:
- Certificate of Analysis (CoA) — issued per production batch/lot number
- Safety Data Sheet (SDS) — GHS-format, available in multiple languages on request
- ISO 9001 / ISO 14001 manufacturing certification
- Fumigation Certificate & Certificate of Origin — for export shipments
- REACH registration status — available on request for EU-bound cargo
- All shipments are declared and packaged in accordance with UN 1823, Class 8 (Corrosive), Packing Group II requirements for international freight transport.
Procurement & Request a Quote
Procurement teams and supply chain managers can proceed with any of the following:
- Request a Freight-Inclusive Quote (CIF/FOB) — specify destination port and container quantity for a formal pricing offer
- Download SDS / CoA — obtain current-batch documentation for internal compliance review
- Order a Validation Sample Kit — request a pre-shipment sample for in-house lab verification prior to placing a bulk order
Contact our export sales team to initiate a formal quotation for Caustic Soda Flakes 99% (Sodium Hydroxide), UN 1823 Class 8, packed in 25kg bags or full 20ft FCL.
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