Sodium Hydroxide Flakes NaOH 98% | 25kg Bags | Bulk Pricing
Sodium Hydroxide Flakes NaOH 98% (CAS 1310-73-2) in white flake form, 25kg bags. Direct imports with COA/MSDS per batch, fast delivery from 6 nationwide warehouses. ☎ 0979 891 929
- NaOH 98% white flakes, CAS 1310-73-2, UN 1823, solid density ~2.13 g/cm³ (20°C), 1% solution pH > 13
- Purity ≥98% per COA — sufficient for 90% industrial applications, saving 8-15% vs NaOH 99%
- Direct imports from Taiwan with batch-specific COA and clear documentation
- 25kg bags (PP + PE liner) — easy handling and batch measurement
- Delivery from 6 regional warehouses: Bac Ninh, Da Nang, HCM, Dong Nai, BR-VT, Can Tho — sealed containers and trucks
What is Sodium Hydroxide Flakes NaOH 98%?
Sodium Hydroxide Flakes NaOH 98% (Sodium Hydroxide Flakes, Caustic Soda Flakes, CAS 1310-73-2, UN 1823) is solid sodium hydroxide in thin white opaque to translucent flakes with NaOH content ≥98% verified by batch COA. One of the strongest industrial alkalis with 1% solution pH exceeding 13 and solid density ~2.13 g/cm³ at 20°C. The flakes dissolve completely in water with strong exothermic reaction (Delta H −44.5 kJ/mol), creating hot alkaline solution. Compared to pearls, flakes have larger surface area for faster dissolution, suitable for manual and semi-automatic mixing tanks. Melting point 318°C, classified as Class 8 hazardous material (corrosive). Loc Thien Chemicals directly imports NaOH 98% flakes from Taiwan.
| Other Names | Formula | CAS | Purity | Appearance | Origin | Packaging |
|---|---|---|---|---|---|---|
| Caustic Soda, Sodium Hydroxide Flakes, Caustic Soda Flakes | NaOH | 1310-73-2 | ≥98% | White solid flakes | Taiwan | 25kg bags (PP + PE liner) |
Comparison: NaOH 98% vs NaOH 99%
NaOH 98% and 99% differ primarily in purity and price — key factors when selecting products for specific production stages. NaOH 98% has 1% lower purity but costs 8-15% less depending on import timing and order volume. For wastewater treatment, paper/pulp, textile dyeing, and conventional saponification, the 1% purity difference has negligible impact on reaction efficiency under actual operating conditions. NaOH 99% offers higher purity with lower Na₂CO₃, NaCl and Fe impurities, suitable for electroplating, electronics, pharmaceuticals and food. Factories consuming over 50 tons NaOH monthly achieve significant cost savings by switching from 99% to 98%.
| Criteria | NaOH 98% | NaOH 99% |
|---|---|---|
| NaOH Content | ≥98% | ≥99% |
| Impurities (Na₂CO₃, NaCl, Fe) | ~1.5-2% | ~0.5-1% |
| Purity Grade | Industrial (technical grade) | High-purity technical |
| Relative Price | 8-15% lower | Higher |
| Dissolution Rate | Equivalent (same flake form) | Equivalent |
| Acid Neutralization Efficiency | ~98% | ~99% |
| Recommended Applications | WWT, paper, textiles, soap | Electroplating, electronics, pharma, food |
Comparison: Flakes vs Pearls
NaOH flakes and pearls share the same chemical composition (CAS 1310-73-2) but differ physically in morphology, affecting dissolution rate, moisture absorption, dust generation and pricing. Flakes are thin irregular sheets with larger surface area for faster water dissolution, ideal for manual or semi-automatic mixing tanks. However, flakes absorb atmospheric moisture faster and may clump if not sealed properly. Pearls are uniform small spheres with less dust and free-flowing properties — better for automated dosing systems. Price-wise, flakes cost 3-5% less due to lower production costs. Manual mixing operations should choose flakes for cost savings, while automated systems require pearls.
| Criteria | NaOH Flakes | NaOH Pearls |
|---|---|---|
| Morphology | Thin flat irregular sheets | Uniform small spheres |
| Surface Area | Larger | Smaller |
| Dissolution Rate | Faster | Moderate |
| Dust Generation | Higher | Lower |
| Moisture Absorption | Higher (larger surface) | Lower |
| Price | 3-5% lower | Higher |
| Recommended For | Large mixing tanks, WWT, paper, textiles | Automated dosing systems, silos |
Origin & Quality Control
Loc Thien Chemicals directly imports NaOH 98% flakes from Taiwan through formal trade contracts — no intermediaries, ensuring transparent origin and competitive pricing versus multi-layer distributors. Our import and QC process involves 5 steps: Step 1 — Order from Taiwan factory with minimum 20ft container; Step 2 — Pre-shipment batch COA verification confirming NaOH ≥98%, Na₂CO₃ ≤1.5%, NaCl ≤0.5%, Fe ≤50 ppm; Step 3 — Sealed container transport to Cat Lai or Cai Mep ports with absolute moisture protection; Step 4 — Storage at 6 warehouses: Bac Ninh (North), Da Nang (Central), HCM, Dong Nai, BR-VT and Can Tho (South); Step 5 — Delivery via sealed trucks to customer plants.
Industrial Applications
NaOH 98% flakes are crucial chemical inputs across multiple industries due to strong alkaline properties: acid neutralization, organic matter decomposition, fat saponification and dye fixation. Below are four primary applications in textiles, paper, wastewater treatment and industrial soap.
Textile Dyeing
In textile dyeing, NaOH 98% flakes are mainly used in fabric scouring — removing oils, sizing agents, pectin and natural impurities from cotton fibers. NaOH solutions (10-30 g/L at 80-100°C) decompose organic compounds on fiber surfaces while swelling cellulose fibers to enhance absorbency and dye uptake. Typical dosage ranges 3-8% of fabric weight depending on material and quality requirements. For reactive dyeing, NaOH acts as alkali for dye fixation on cellulose, directly affecting color fastness and fabric uniformity. Using NaOH 98% instead of 99% brings significant cost savings.
Paper & Pulp Production
NaOH is essential in Kraft pulping — accounting for over 80% global pulp production. During pulping, NaOH combines with Na₂S forming white liquor to cook wood chips at 160-180°C, dissolving lignin — natural binder between cellulose fibers. NaOH consumption averages 300-500 kg per ton of Kraft pulp depending on wood type and cooking technology. NaOH 98% is fully suitable as paper industry doesn't require high purity — allowable carbonate and NaCl impurities don't affect pulping efficiency. Mid-size paper mills using 50-100 tons NaOH monthly achieve notable savings with NaOH 98%.
Wastewater Treatment
NaOH 98% is Vietnam's most common acid neutralization chemical for industrial wastewater plants. Mechanism: OH⁻ ions from NaOH combine with H⁺ in acidic wastewater (pH 2-4) raising pH to neutral 6-8 while precipitating heavy metals (Cu²⁺, Zn²⁺, Ni²⁺) as insoluble hydroxides. Typical dosage 50-200 g NaOH per m³ depending on inlet pH. Compared to lime Ca(OH)₂, NaOH fully dissolves without sludge, avoids excessive TDS increase and enables precise dosing. A 1,000 m³/day plant at Tan Tao IP consumes ~300 kg NaOH 98% daily to raise pH from 3.5 to 7.0 — saving 1.5-3 million VND monthly with NaOH 98%.
Soap Saponification & Industrial Detergents
Saponification between NaOH and fats (coconut oil, palm oil, animal fat) produces soap and glycerin — fundamental reaction in industrial soap making. Required NaOH is ~130-140 g per kg coconut oil, equivalent to 133-143 g NaOH 98% after conversion. Flakes dissolve rapidly in hot water, shortening alkali solution preparation time before mixing with oils. NaOH 98% is economical for industrial soap as final products don't require high purity. Mid-size detergent plants save 8-15% NaOH material costs versus 99% without quality compromise.
Safe Storage & Handling
Solid NaOH has extreme moisture absorption — the #1 storage challenge. Exposure to humid air forms Na₂CO₃ (white surface layer), reducing actual purity. Always reseal bags after opening, don't leave open >30 minutes above 60% RH. NaOH dissolution in water releases strong heat (Delta H −44.5 kJ/mol) — 1 kg NaOH raises solution temperature 12-15°C. Absolute rule: always add NaOH to water, never water to solid NaOH due to localized explosive splashing. Mandatory PPE: chemical goggles, nitrile gloves, long sleeves, N95 in confined spaces. Emergency eyewash within 15m radius. First aid: skin rinse under water 20 mins (no acid neutralization); eyes rinse 20 mins holding lids open, seek immediate medical help. Transport solid NaOH in sealed containers or trucks — no tankers.
Why Choose Loc Thien?
Loc Thien Chemicals is a large-scale direct importer of industrial chemicals — fundamentally different from small distributors relying on multiple intermediaries. Six strategically located warehouses in Bac Ninh (North), Da Nang (Central), HCM, Dong Nai, BR-VT and Can Tho (South) enable 4-hour HCM metro and 24-hour Southern IP deliveries. Every import batch comes with original Taiwan factory COA and GHS-compliant MSDS — customers receive complete documentation, not photocopies. Legally, Loc Thien is Loc Thien Development Investment Company (Tax ID 0313650856, established 2016) issuing full VAT invoices and clear principle contracts. Small competitors often lack original COAs and take 2-5 days for delivery.
| Factor | Small Competitors | Loc Thien |
|---|---|---|
| Supply Chain | 2-3 intermediary layers | Direct formal imports |
| COA/MSDS | None or old photocopies | Original batch COA, GHS MSDS |
| Warehouses | 1-2 locations | 6 regional warehouses |
| Delivery Time | 2-5 days | 4h HCM, 24h Southern IPs |
| Legal Entity | Household businesses | Loc Thien Dev. Inv. Co., Tax ID 0313650856 |
Frequently Asked Questions
- Difference between NaOH 98% and 99%? 1% lower purity, higher impurities. Suitable for WWT, textiles, paper, soap — not for food, pharma or electroplating.
- Can NaOH 98% replace 99%? Yes for ~90% industrial applications. No when requiring ±0.1 pH precision or food production.
- Where to buy reliable NaOH 98%? Loc Thien directly imports from Taiwan with batch COAs, delivers nationwide. Call 0979 891 929 for quotes.
- Loc Thien's NaOH 98% packaging? 25kg PP woven bags with PE liner — moisture-proof, easy handling and batching.
- Delivery to Northern Vietnam? Yes. We have Bac Ninh, Da Nang, HCM, Dong Nai, BR-VT and Can Tho warehouses — nationwide coverage.
- Solid NaOH transport by tanker? No. Only sealed containers or trucks. Tankers are for liquid NaOH max 50% concentration.
Request Quote
Loc Thien Chemicals supplies bulk Sodium Hydroxide Flakes NaOH 98% for all plant scales. Call 0979 891 929 for technical specs, latest batch COA and volume-based pricing. Principle contracts, VAT invoices, full COA/MSDS provided upon order.
Reference articles:
- NaOH – Sodium Hydroxide – Caustic Soda (overview)
- NaOH Pearls 99% Taiwan — specs & pricing
- NaOH Flakes 99% China — comparison & pricing
Loc Thien Development Investment Company Limited
Tax ID: 0313650856 · Hotline: 0979 891 929
6 regional warehouses: Bac Ninh · Da Nang · HCM · Dong Nai · BR-VT · Can Tho
Established: 2016 · Email: [email protected]
