SPECIALTY AND FINE CHEMICALS

FULLY REFINED PARAFFIN WAX: THE HIGH-PERFORMANCE HYDROCARBON FOR DIVERSE INDUSTRIES

Fully refined paraffin wax is a highly purified, white, odorless solid hydrocarbon derived from petroleum, with a carbon chain length of C₂₀-C₄₀. With 99%+ purity and oil content below 0.5%, this premium wax serves critical functions in food packaging, cosmetics, candles, and industrial applications. The global market exceeds 4 million metric tons annually, driven by its exceptional stability and versatility.

Key Properties & Specifications

Physical & Chemical Characteristics

  • Melting Point: 58-72°C (varies by grade)
  • Oil Content: ≤0.5% (fully refined)
  • Penetration (25°C): 10-20 dmm (ASTM D1321)
  • Color: White (Saybolt +30)
  • Odor: Odorless (critical for food/pharma)

Technical Grades

GradeMelting RangeOil ContentKey Applications
Food Grade60-62°C≤0.5%Cheese coating, gum base
Candle Wax58-60°C≤0.8%Premium container candles
Cosmetic62-65°C≤0.3%Lip balms, creams
Industrial66-70°C≤1.0%Rubber, PVC lubricant

Production Process

1. Feedstock Preparation

  • Slack Wax: Byproduct of lubricant oil refining (10-30% oil)
  • Deoiling: Solvent (MEK/toluene) or sweating process

2. Refining Steps

  1. Hydrotreating: Removes sulfur/nitrogen compounds
  2. Clay Treatment: Bleaching for color improvement
  3. Filtration: Final polishing

3. Quality Control

  • Congealing Point (ASTM D938)
  • Oil Content (ASTM D721)
  • FDA Compliance: 21CFR172.886/178.3710

Major Applications

1. Food & Packaging (25% Market)

  • Cheese Coating:
    • 50-100μm layer prevents moisture loss
    • Meets FDA 21CFR172.886
  • Chewing Gum:
    • 5-8% wax base improves elasticity

2. Candle Manufacturing (40%)

  • Premium Candles:
    • 100% paraffin or blended formulas
    • Burn time: 7-10g/hour (standard wick)
  • Additive Compatibility:
    • Up to 10% fragrance load

3. Cosmetics & Pharma

  • Lipsticks:
    • 5-15% wax provides structure
  • Ointments:
    • USP-grade forms occlusive barrier

4. Industrial Uses

  • Rubber Compounding:
    • 1-3% improves mold release
  • PVC Lubricant:
    • 0.5-1.0phr reduces friction
  • Investment Casting:
    • Pattern material blends

Performance Comparison

ParameterFully RefinedSemi-RefinedMicrocrystalline
Oil Content≤0.5%0.8-2.0%3-8%
OdorNoneSlightModerate
FlexibilityLowMediumHigh
Price ($/ton)900-1,200600-9001,300-1,800

Market Dynamics

Global Production

  • Top Producers:
    • China (35%)
    • ExxonMobil, Sasol, Shell
  • Price Trends:
    • Linked to crude oil +$300/ton premium

Emerging Trends

  • Bio-Based Alternatives:
    • Soy/carnauba wax blends
  • Recycled Paraffin:
    • From waste candle recovery
  • High-Melt Grades:
    • For tropical climate products

Safety & Compliance

✅ Non-Toxic:

  • GRAS status (FDA)
  • EU Food Contact Material 10/2011

⚠ Handling:

  • Dust explosion risk (ST1 class)
  • Melt handling >100°C requires PPE

♻ Environmental:

  • Readily combustible
  • Non-biodegradable but recyclable

Conclusion

Fully refined paraffin wax remains the gold standard for purity-demanding applications, from food coatings to luxury candles. As sustainability pressures grow, the industry is responding with recycling initiatives and bio-hybrid solutions while maintaining the unmatched performance of petroleum-derived paraffin.