Paraffin Wax, also referred to as Petroleum Wax, is a refined solid hydrocarbon material derived from crude oil refining, specifically from lubricating oil distillates. During the refining process, waxy components are separated from base oils through dewaxing, followed by hydrotreating or solvent refining to achieve the desired purity, color, oil content, and odor level.
Paraffin wax primarily consists of straight-chain saturated hydrocarbons (alkanes) with carbon numbers typically ranging from C20 to C40. Its controlled crystalline structure, chemical inertness, and water-repellent nature make it an indispensable raw material across a wide range of industrial, cosmetic, pharmaceutical, food, and packaging applications.
Types of Petroleum Wax (Detailed)
1. Fully Refined Paraffin Wax
Oil Content: ≤ 0.5% | Appearance: White, translucent, glossy | Odor: Odourless | Purity Level: Very high
- Key Features: Food-safe and cosmetic-grade, excellent color stability, low volatility and minimal smoke generation.
- Common Uses: Pharmaceuticals, cosmetics & personal care, food packaging & coatings, premium candles.
2. Semi-Refined Paraffin Wax
Oil Content: 1% – 3% | Appearance: Off-white to light yellow | Cost: Economical
- Key Features: Balanced performance and cost, slight odor compared to fully refined, good moldability and burning behavior.
- Common Uses: Candle manufacturing, rubber & tyre industry, polishes, general industrial coatings.
3. Microcrystalline Wax
Structure: Branched and cyclic hydrocarbons | Texture: Sticky, plastic, flexible | Melting Point: Higher than paraffin wax
- Key Features: Strong adhesion, higher viscosity, superior flexibility and toughness.
- Common Uses: Cosmetics (lipsticks, creams), adhesives & sealants, chewing gum base, electrical insulation.
Key Characteristics – Technical Explanation
- High Purity Hydrocarbon Composition: Dominated by saturated paraffinic hydrocarbons, free from reactive functional groups, ensures chemical inertness and safety.
- Controlled Melting Behavior: Melting range tailored via refining, enables precise application control in candles, coatings, and hot-melt adhesives.
- Water Repellency & Barrier Properties: Hydrophobic molecular structure acts as an effective moisture barrier, vapor barrier, and protective coating.
- Surface Finish & Aesthetics: Produces smooth surfaces, glossy coatings, uniform appearance, and enhances visual and tactile quality of finished products.
- Odourless & Non-Toxic (Refined Grades): Meets food, pharma, and cosmetic standards, safe for direct or indirect contact applications.
Typical Physical & Mechanical Properties
| Property | Typical Range | Significance |
|---|---|---|
| Melting Point | 48°C – 70°C | Determines hardness & heat resistance |
| Oil Content | 0.5% – 8% | Influences hardness & burning quality |
| Penetration @ 25°C | 10 – 30 dmm | Indicates softness/hardness |
| Density @ 15°C | 0.89 – 0.93 g/cm³ | Affects coating thickness |
| Viscosity @ 100°C | 3 – 6 cSt | Flow behavior during processing |
| Flash Point | 180°C – 250°C | Thermal safety during heating |
| Colour (Saybolt) | #ERROR! | Visual purity indicator |
Refining & Manufacturing Process
- Vacuum Distillation: Separates waxy lubricating fractions
- Solvent Dewaxing: Removes wax crystals from base oil
- Hydrotreating / Clay Treatment: Removes sulfur, nitrogen, and aromatics; improves colour and odour
- Filtration & Solidification: Produces slabs, pellets, or granules
Available Forms & Packaging
Physical Forms: Slabs / Blocks (1–5 kg), Granules / Pastilles, Pellets, Powder (special request)
Packaging Options: Carton boxes, HDPE bags, Export-grade pallets, Bulk containers
Applications – Industry-Wise Breakdown
- Candle Industry: Stable flame, controlled burn rate, smooth surface finish, blending base for stearic acid & additives
- Packaging Industry: Moisture-proof paper coatings, corrugated box protection, food-wrap lamination, cheese waxing
- Cosmetics & Personal Care: Lipsticks & lip balms, creams & lotions, emollient & texture enhancer, moisture-locking barrier
- Pharmaceutical Industry: Tablet coating & polishing, ointments & medicated creams, controlled-release formulations
- Rubber & Tyre Industry: Anti-ozonant waxes, crack prevention, surface bloom protection
- Adhesives & Hot-Melt Systems: Improves flexibility, controls setting time, enhances bonding strength
- Electrical & Industrial Uses: Cable insulation, surface coatings, anti-corrosion layers, waterproofing compounds
- Food Industry: Fruit & vegetable coatings, food-grade paper packaging, chewing gum base
Advantages of Paraffin Wax
- ✔ Chemically inert & safe
- ✔ Excellent moisture resistance
- ✔ Cost-effective raw material
- ✔ Easy to process and mould
- ✔ Long shelf life
- ✔ Wide melting range availability