Commercial Grade LPG is a refined, high-quality fuel consisting mainly of propane (C₃H₈) and butane (C₄H₁₀), produced during crude oil refining and natural gas processing.
It is liquefied under moderate pressure, allowing large volumes of energy to be stored and transported efficiently.
This grade is specifically designed for continuous, high-load commercial and industrial applications where consistent flame quality, stable pressure, and dependable heat output are critical.
Composition & Fuel Quality
Primary Components:
Propane: 30–60%
Butane: 40–70% (ratio adjusted based on climate and application)
Impurities:
Moisture, sulfur compounds, and olefins maintained at trace levels
Odorized with ethyl mercaptan for safety
Meets national and international commercial LPG specifications, ensuring uniform combustion and appliance compatibility.
Key Characteristics of Commercial Grade LPG
High Energy Efficiency & Output
Calorific value: 46–50 MJ/kg
Provides instant, high-intensity heat for large burners, boilers, ovens, and continuous cooking systems.
Clean & Environment-Friendly Combustion
Very low smoke and soot
Minimal SOₓ emissions
Reduced CO when properly adjusted
Lower CO₂ emissions compared to diesel, furnace oil, or coal.
Stable & Reliable Performance
Consistent flame characteristics and stable vapor pressure ensure uninterrupted gas flow.
Easy Storage, Transport & Handling
Stored in commercial cylinders, industrial cylinders, or bulk tanks.
Safe handling using standard LPG safety devices and controls.
Versatile Fuel
Compatible with burners, boilers, ovens, furnaces, dryers, and centralized gas systems.
Typical Mechanical & Technical Properties
| Property | Typical Value |
|---|---|
| Chemical Composition | Propane–Butane mixture |
| Boiling Point Range | –42°C to –0.5°C |
| Vapor Pressure @ 20°C | 2 – 8 bar |
| Liquid Density | 0.50 – 0.58 kg/L |
| Calorific Value | 46 – 50 MJ/kg |
| Flame Temperature | ~1,980°C |
| Flammability Range | 2% – 10% |
| Auto-Ignition Temperature | ~480 – 500°C |
| Storage Condition | Liquefied under moderate pressure |
| Appearance | Colorless, odorized |
Refining & Production Process
Crude Oil Refining: LPG separated during distillation, catalytic cracking, and reforming.
Natural Gas Processing: LPG extracted from NGL streams using cryogenic fractionation.
Purification: Removal of sulfur compounds, moisture, and acidic gases.
Blending: Propane–butane ratios adjusted for climate and application.
Odorization: Ethyl mercaptan added for leak detection.
Supply Formats
Cylinders
17 kg, 19 kg, 33 kg (commercial)
47 kg, 425 kg (industrial)
Bulk LPG Supply
Delivered via tanker trucks and stored in above-ground or underground tanks.
Centralized LPG Systems
Piped gas distribution with automatic changeover and pressure regulation.
Applications of Commercial Grade LPG
Commercial & Hospitality
Hotels, restaurants, bakeries, catering units, food courts
Industrial
Boilers, furnaces, kilns, metal heating, textiles, paper drying, food processing
Institutional & Infrastructure
Hospitals, malls, educational institutions, laundries, commercial complexes
Advantages Over Conventional Fuels
| Fuel | Emissions | Storage | Efficiency |
|---|---|---|---|
| Commercial LPG | Low | Easy | High |
| Diesel | High | Liquid tanks | Medium |
| Furnace Oil | Very High | Heated tanks | Low |
| Coal | Extremely High | Bulky | Low |
Safety & Compliance
Odorized for leak detection
Pressure relief and excess flow valves
Complies with IS / EN / ASTM LPG standards and local fire & explosive safety regulations.
Commercial Grade LPG is a dependable, clean, and high-performance energy solution for businesses requiring consistent heat, operational reliability, and lower emissions.