| Category | English Name | Abbreviation | International Common Name | Core Identifier Codes |
|---|---|---|---|---|
| Chemical Name | Sodium Hydroxide | NaOH | Caustic Soda | CAS No.: 1310-73-2
|
| Product Form | Caustic Soda Flakes | CSF | Flake Lye | UN No.: 1823 (Class 8 Corrosive Substance) |
| Customs Declaration | - | - | - | HS Code: 2815110000 (Industrial Grade) |
| Product Subtype | Thin Flakes / Thick Flakes | - | Technical Grade Flakes | - |
| Index | Premium Grade (99%) | First Grade (98.5%) | Standard Grade (98%) | Test Method |
|---|---|---|---|---|
| NaOH Purity | ≥99.0% | ≥98.5% | ≥98.0% | Acidimetric Titration |
| Sodium Carbonate (Na₂CO₃) | ≤0.5% | ≤0.8% | ≤1.0% | Gas Phase Stripping Method |
| Sodium Chloride (NaCl) | ≤0.03% | ≤0.05% | ≤0.08% | Argentometric Titration |
| Iron(III) Oxide (Fe₂O₃) | ≤0.005% | ≤0.008% | ≤0.01% | Spectrophotometry |
| Appearance | White thin flakes, no visible impurities | White flakes, slight trace impurities | White to light yellow flakes | Visual Inspection |
| Flake Thickness | 0.1–0.3mm | 0.3–0.5mm | 0.5–1.0mm | Micrometer Measurement |
| Property | Value / Description |
|---|---|
| Physical Form | White translucent flakes, smooth surface, uniform thickness, easy to stack and store |
| Solubility | Highly soluble in water, violent exothermic reaction during dissolution; soluble in ethanol and glycerol |
| Hygroscopicity | Strongly hygroscopic, deliquesces quickly when exposed to air; absorbs CO₂ in air to form Na₂CO₃ |
| Melting Point / Boiling Point | 318.4℃ / 1390℃ |
| Density | 2.13g/cm³; bulk density 0.8–1.0g/cm³ |
| Corrosiveness | Strongly corrosive to skin, metals, and glass; reacts with acids to produce salt and water |
| Advantage | Description |
|---|---|
| Cost-Effective | Lower production and packaging cost, suitable for large-scale industrial procurement |
| High Bulk Density | High stacking density, reduces storage and transportation costs per unit weight |
| Easy Dissolution Control | Flake structure dissolves more gradually than pearls, reducing local overheating risk |
| Mature Production Process | Stable quality, consistent supply, widely recognized in global markets |
| Industry | Key Applications | Market Demand Characteristics |
|---|---|---|
| Textile & Dyeing | Fiber mercerization, dye neutralization, wastewater treatment | High demand in South Asia and Southeast Asia; requires low-iron content |
| Soap & Detergent | Saponification reaction with fats and oils to produce soap and surfactants | Prefer 98% grade for cost control |
| Metallurgy | Ore beneficiation, metal surface cleaning, aluminum oxide production | Stable demand in North America and Europe; strict impurity requirements |
| Chemical Synthesis | Production of sodium salts, organic intermediates, rubber regeneration | High demand for 99% premium grade; requires batch consistency |
| Water Treatment | pH adjustment, heavy metal ion precipitation, sewage neutralization | Growing demand in emerging markets; requires compliance with local environmental standards |
| Item | Specification |
|---|---|
| Standard Packaging | 25kg laminated kraft paper bags (moisture-proof, leak-proof); 500kg/1000kg bulk bags |
| Container Loading | 20ft container: 25–27 tons (25kg bags); 20–22 tons (bulk bags) |
| Transportation Notes | 1. Mark UN1823 and corrosive hazard signs on packages
|
| Storage Requirements | Store in sealed warehouses; keep away from moisture and acidic gases; shelf life: 12 months under sealed conditions |
| Region / Standard | Key Requirements |
|---|---|
| Global | Provide GHS-compliant MSDS/SDS; mark hazard warnings in local languages |
| EU | Complete REACH registration; comply with CLP regulation for labeling |
| North America | Meet FDA standards for food-grade applications (E524); comply with OSHA regulations |
| ASEAN / Middle East | Comply with local customs import inspection standards; provide product certification |
