INDUSTRY COMPONENT

Sodium Hydroxide Crystal

Sodium hydroxide crystal is a solid form of caustic soda used in industrial chemical processes.

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Component Specifications

Definition
Sodium hydroxide crystal, also known as caustic soda crystal, is a highly alkaline inorganic compound with the chemical formula NaOH. It exists as white, deliquescent crystalline solids that readily absorb moisture from air. In industrial applications, these crystals are produced through evaporation of sodium hydroxide solutions and are valued for their high purity (typically 98-99% NaOH) and controlled physical properties. They serve as a concentrated form of alkali for various chemical manufacturing processes where precise dosing and minimal water content are required.
Working Principle
Sodium hydroxide crystals function as a strong base in chemical reactions through dissociation into sodium (Na+) and hydroxide (OH-) ions when dissolved in water. The hydroxide ions act as proton acceptors, enabling neutralization of acids, saponification of fats and oils, hydrolysis of esters and amides, and pH adjustment in industrial processes. The crystalline form provides controlled solubility and reaction kinetics compared to liquid alternatives.
Materials
High-purity sodium hydroxide (NaOH) with typical composition: 98-99% NaOH, 0.5-1.5% sodium carbonate (Na2CO3), <0.1% sodium chloride (NaCl), <0.005% iron (Fe), and trace heavy metals. Physical form: orthorhombic crystalline structure, white opaque appearance, deliquescent properties.
Technical Parameters
  • Purity 98-99% NaOH
  • Bulk Density 1.1-1.3 g/cm³
  • Melting Point 318°C (604°F)
  • Moisture Content <0.5%
  • Solubility in Water 111 g/100 mL at 20°C
  • Storage Temperature Below 40°C in dry conditions
  • pH of Saturated Solution 14
  • Particle Size Distribution 1-10 mm crystals
Standards
ISO 15547, DIN 19602, ASTM E291

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Sodium Hydroxide Crystal.

sodium hydroxide crystal caustic soda crystal NaOH crystal industrial alkali chemical manufacturing base high purity sodium hydroxide Sodium Hydroxide Crystal in Chemical Manufacturing

Parent Products

This component is used in the following industrial products

Industrial Grade Sodium Hydroxide Flake

High-purity caustic soda flakes for industrial chemical processes

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Engineering Analysis

Risks & Mitigation
  • Severe skin and eye corrosion
  • Exothermic reaction with water causing heat and splattering
  • Reactivity with acids producing hazardous gases
  • Environmental toxicity to aquatic life
  • Deliquescence leading to container corrosion
FMEA Triads
Trigger: Moisture ingress during storage
Failure: Caking and reduced flowability, partial dissolution creating concentrated caustic solutions
Mitigation: Hermetic sealing with desiccants, controlled humidity storage environments, regular container integrity checks
Trigger: Incompatible material contact
Failure: Violent exothermic reactions with acids, corrosion of aluminum and zinc containers
Mitigation: Segregated storage from acids and reactive metals, use of compatible polyethylene or properly lined steel containers
Trigger: Improper handling without PPE
Failure: Severe chemical burns to skin and eyes, respiratory irritation from dust
Mitigation: Mandatory use of chemical-resistant gloves, face shields, protective clothing, and respiratory protection during handling

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±0.5% NaOH content from specified purity, ±10% on particle size distribution
Test Method
Titration with hydrochloric acid for NaOH content (ASTM E291), sieve analysis for particle size, Karl Fischer titration for moisture content

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What is the main advantage of using sodium hydroxide crystals over liquid caustic soda?

Crystals offer higher purity (98-99% NaOH vs 50% in liquid), reduced transportation costs due to no water content, precise dosing capability, and better storage stability without crystallization issues in cold temperatures.

How should sodium hydroxide crystals be stored safely?

Store in airtight containers in cool, dry areas below 40°C, away from acids and moisture. Use corrosion-resistant packaging (polyethylene or steel with proper lining) and implement spill containment measures due to the material's deliquescent and corrosive nature.

What industries commonly use sodium hydroxide crystals?

Primary users include chemical manufacturing (especially for organic synthesis and inorganic compounds), pulp and paper production, textile processing, water treatment facilities, and soap/detergent manufacturing where controlled alkali addition is critical.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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