Product Category: Mining Chemicals / Industrial Alkalis / Water Treatment Chemicals
Chemical Name: Sodium Hydroxide Solution
Alternative Names: Caustic Soda Lye / Liquid Caustic Soda
CAS Number: 1310-73-2
Chemical Formula: NaOH
Concentration: 45% w/w
Appearance: Clear, colourless liquid
Product Overview
Caustic Soda Lye 45% is a concentrated aqueous sodium hydroxide solution used extensively in mining, mineral processing, water treatment, chemical manufacturing and heavy industrial operations.
It provides strong alkalinity without requiring users to dissolve solid caustic-soda flakes before use.
Typical Technical Properties
| Property | Typical Reference |
| SKU | MCS-C7 |
| Sodium Hydroxide | 45% w/w |
| Appearance | Clear, colourless liquid |
| Density at 20°C | Approx. 1.48 kg/L |
| pH | Strongly alkaline, >14 at high concentration |
| Solubility | Completely miscible with water |
| Chemical Formula | NaOH |
| CAS Number | 1310-73-2 |
| Boiling Point | Approx. 135°C for 45% solution |
Published concentration data gives a density of approximately 1.478–1.483 kg/L at 20°C for a 45% sodium-hydroxide solution.
Applications
- Mining and mineral processing
- Gold-processing operations
- pH adjustment
- Neutralisation
- Water and wastewater treatment
- Chemical manufacturing
- Pulp and paper
- Soap and detergent manufacturing
- Textile processing
- Industrial cleaning
- Petroleum and process industries
Key Benefits
- Ready-to-use liquid alkali
- Strong pH adjustment capability
- Eliminates solid-caustic dissolution step
- Suitable for automated dosing systems
- Highly soluble in water
- Suitable for high-volume industrial processes
Packaging
Available in compatible chemical-resistant drums, IBCs and bulk tanker quantities depending on requirements.
Storage
Highly corrosive.
Store in suitable sodium-hydroxide-compatible tanks or containers. Protect from acids and incompatible metals and materials.
Correct PPE, eyewash and emergency-shower facilities should be available in handling areas.
