Caustic Soda (NaOH)

Description

1. Product Overview

Caustic Soda (NaOH), also known as Sodium Hydroxide, is a high-purity, industrial-grade alkali produced primarily through the chlor-alkali process. It is a foundational chemical used across pulp and paper, water treatment, chemical manufacturing, alumina refining, textiles, petroleum refining, and soap and detergent production.

As one of the most widely consumed inorganic chemicals globally, Caustic Soda plays a mission-critical role in pH regulation, chemical synthesis, neutralization, and cleaning processes. Its strong alkalinity, high reactivity, and cost efficiency make it indispensable for large-scale industrial operations. For industrial buyers, it represents a strategic raw material essential to operational continuity and process optimization.

2. Key Specifications & Technical Characteristics

• Chemical Composition:
  • Sodium Hydroxide (NaOH)
• Purity Level / Grade:
  • 98–99% (Solid – Flakes/Pearls)
  • 48–50% (Liquid – Membrane Grade)
• Production Method:
  • Membrane cell chlor-alkali process
• Appearance:
  • Solid: White flakes or pearls
  • Liquid: Clear, colorless solution
• Physical Characteristics:
  • Highly hygroscopic
  • Strong alkaline (pH > 14 in solution)
  • Density (50% solution): Approx. 1.52 g/cm³ at 20°C
  • Melting Point (Solid): ~318°C
• Impurities (Typical):
  • Sodium Carbonate (Na₂CO₃): <0.5%
  • Iron (Fe): Trace levels
• Packaging Options:
  • 25 kg PP bags (solid)
  • 1 MT jumbo bags
  • IBC tanks (liquid)
  • Bulk tanker trucks
  • ISO tank containers
• Shelf Life:
  • Solid: 12–24 months in dry, sealed storage
  • Liquid: Stable under sealed, corrosion-resistant storage

3. Core Industrial Applications

Primary Industries

• Pulp and paper manufacturing
• Chemical processing
• Water and wastewater treatment
• Alumina refining (Bayer process)
• Petroleum refining
• Textile and detergent production

Operational Use Cases

• Delignification and bleaching in paper production
• pH adjustment and neutralization in water treatment systems
• Production of soaps, detergents, and surfactants
• Alumina extraction from bauxite
• Chemical synthesis (e.g., sodium salts, hypochlorite)
• Degreasing and industrial cleaning

Performance & Cost Advantages

Caustic Soda provides rapid and efficient neutralization due to its strong alkalinity and high solubility. Compared to weaker alkalis, it delivers faster reaction kinetics, lower dosage requirements, and improved operational control.

Its large-scale global production ensures cost competitiveness and consistent availability, while membrane-grade production offers lower impurity levels and enhanced environmental compliance compared to older diaphragm technologies.

4. Competitive Advantages

• Quality Consistency: Produced via modern membrane cell technology with strict quality control and batch testing.
• Supply Reliability: High-volume production capacity aligned with global chlor-alkali supply chains.
• Logistics Capability: Hazard-compliant bulk transport solutions, including ISO tanks and dedicated tankers.
• Price Competitiveness: Economies of scale enable stable, competitive bulk pricing.
• Sustainability Profile: Membrane cell production reduces mercury usage and environmental impact.
• Technical Documentation: Full Certificate of Analysis (COA), MSDS, and regulatory compliance documentation available.
• Technical Support: Process integration guidance and storage handling recommendations provided.

Caustic Soda (NaOH) represents a strategic procurement decision for industrial buyers seeking operational reliability, cost efficiency, and regulatory-compliant supply continuity.

5. Commercial & Supply Information

• Minimum Order Quantity (MOQ): Bulk 20 MT
• Loading Capacity:
  • 20ft Container (Solid): Approx. 25–27 MT
  • 20ft ISO Tank (Liquid 50%): Approx. 20–25 MT