1. Product Basic Information
Item | Specification & Details |
|---|---|
Product Name | Industrial Sodium Hydroxide / Caustic Soda Flakes |
Chemical Formula | NaOH |
CAS No. | 1310-73-2 |
EC Number | 215-185-5 |
UN Number | 1823 (Solid Caustic Soda) |
HS Code | 2815110000 |
Executive Standard | GB/T 209-2018 (Latest National Standard for Industrial Sodium Hydroxide) |
Appearance | White translucent flake solid, odorless, easy to deliquesce in air, strong hygroscopicity |
Solubility | Easily soluble in water (releasing massive heat), soluble in ethanol and glycerol, insoluble in acetone and ether |
2. Product Purity & Core Content Index
We supply two mainstream industrial grades for global clients: 99% High Purity Grade (hot sale for most industries) and 98.5% Standard Grade (cost-effective for general use). All products meet international industrial chemical standards, with stable impurity control for long-term bulk export.
2.1 Main Content Specification
- NaOH Assay (Main Content): ≥99.0% (High Grade) / ≥98.5% (Standard Grade)
- Moisture: ≤0.5%
- Product Feature: Low impurity, high alkalinity, fast dissolution rate, no insoluble residue
3. COA (Certificate of Analysis) Full Test Report (Batch Standard Data)
This is the standard COA data for our regular export batch. We can provide original official signed & stamped COA matching each shipment batch for customs clearance, buyer inspection and third-party testing.
Test Item | Standard Requirement (99% Grade) | Actual Test Result | Test Method |
|---|---|---|---|
Sodium Hydroxide (NaOH) | ≥99.00% | 99.21% | GB/T 4348.1 |
Sodium Carbonate (Na₂CO₃) | ≤0.80% | 0.32% | GB/T 7698 |
Sodium Chloride (NaCl) | ≤0.05% | 0.03% | GB/T 4348.2 |
Ferric Oxide (Fe₂O₃) | ≤0.008% | 0.004% | GB/T 4348.3 |
Silicon Dioxide (SiO₂) | ≤0.04% | 0.02% | Internal Standard Test |
Appearance | White flake, no foreign impurity | Qualified | Visual Inspection |
Test Conclusion | Compliant with GB/T 209-2018 Industrial Sodium Hydroxide Standard, Qualified for Export | ||
4. Main Industrial Applications
Caustic soda is one of the most essential inorganic alkaline chemicals, widely used in global industrial manufacturing, environmental protection and daily chemical industries. We classify applications by industry for buyers’ quick reference:
4.1 Water Treatment Industry (Largest Application)
- PH value adjustment for domestic sewage, industrial wastewater and circulating water
- Heavy metal precipitation, neutralization of acidic wastewater
- Desulfurization and denitrification for factory flue gas treatment
4.2 Paper Making & Pulp Industry
- Delignification and bleaching process for wood pulp and waste paper pulp
- Improve paper toughness and whiteness, reduce production cost
4.3 Textile & Dyeing Industry
- Mercerizing treatment for cotton fabric to enhance fabric gloss and tensile strength
- Dyeing auxiliaries, degreasing and impurity removal for textile raw materials
4.4 Petroleum & Chemical Industry
- Petroleum refining: remove sulfur compounds and acidic impurities from crude oil
- Raw material for synthetic detergent, soap, pesticide and other chemical products
- Neutralizer for chemical reaction, catalyst auxiliary
4.5 Metallurgy & Aluminum Industry
- Alumina production and aluminum smelting process
- Metal surface cleaning, rust removal and degreasing for steel and hardware
4.6 Other Industries
- Food processing auxiliary (food grade available separately, not for direct food contact)
- Leather dehairing and degreasing process
- Construction industry: concrete additive, ground hardener preparation
5. Packaging, Shipment & Storage Information
5.1 Standard Export Packaging
- 25KG/Bag: Inner PE plastic bag + outer woven bag (most popular for bulk sea shipment)
- 200KG/Iron Drum: Sealed galvanized iron drum, suitable for long-distance ocean transportation and moisture-proof requirement
- Custom packaging is acceptable according to buyers’ requirements
5.2 Loading Capacity
- 25KG bag: 27MT / 20GP container
- 200KG drum: 20MT / 20GP container
5.3 Storage & Transportation Notes
- Store in dry, ventilated and waterproof warehouse; keep away from moisture, rain and direct sunlight
- Strictly forbidden to mix with acid substances, organic materials and food chemicals during transportation
- This product is corrosive hazardous goods; professional hazardous goods logistics required
6. Safety Warning & Handling Instruction
Hazard Characteristic: Strong corrosive alkaline chemical, can cause severe burns to skin, eyes and respiratory tract.
Emergency Treatment:
- Skin contact: Rinse with plenty of clean water for at least 15 minutes immediately
- Eye contact: Flush eyes with running water continuously and seek medical treatment quickly
- Inhalation: Move to fresh air area immediately; seek medical help if breathing difficulty occurs
PPE Requirement: Wear chemical resistant gloves, goggles and protective clothing during operation
7. Our Service Advantage for Global Buyers
- Batch-by-batch official COA, MSDS, commercial invoice, packing list provided for full customs clearance
- Stable supply capacity: 5000MT monthly output, support long-term contract order
- Third-party inspection (SGS, BV) acceptable before shipment
- Professional hazardous goods export document service, one-stop shipping arrangement
tira –
The service is very reassuring!