LPG is a flammable mixture of hydrocarbon gases, mainly Propane (C₃H₈) and Butane (C₄H₁₀). It is stored and transported either as a liquid under moderate pressure in cylinders and bulk tanks, or at low temperatures (–42°C for Propane and ~0°C for Butane) in large-scale marine carriers. It is valued for high energy efficiency and clean combustion across cooking, heating, industrial, and mobility applications. SPII offers pure C3 (Propane) and pure C4 (n-/iso-Butane) streams.
| Property |
Unit |
Specification |
Test Method |
| Propane |
wt% |
Max 1.0 |
ASTM D2163 |
| Iso Butane |
wt% |
Min 98.5 |
ASTM D2163 |
| N-Butane |
wt% |
ASTM D2163 |
| Neo -pentane |
wt% |
Max 0.05
|
ASTM D2163 |
| Iso pentane |
wt% |
ASTM D2163 |
| n-pentane |
wt% |
ASTM D2163 |
| Total Sulfur |
mg/kg |
Max 17 |
ASTM D6667 |
| Vapor pressure @ 100 °F |
psig |
46.4 |
ASTM D2598 |
| Specific gravity @ 60 °F |
– |
0.5747 |
ASTM D2598 |
| Property |
Unit |
Specification |
Test Method |
| Methane |
wt% |
Max 1.0 |
ASTM D2163 |
| Ethane |
wt% |
ASTM D2163 |
| Propane |
wt% |
Min 98.5 |
ASTM D2163 |
| Iso Butane |
wt% |
Max 1.0 |
ASTM D2163 |
| N-Butane |
wt% |
ASTM D2163 |
| Total Sulfur |
mg/kg |
Max 1.0 |
ASTM D6667 |
| Vapor pressure @ 100 °F |
psig |
174.4 |
ASTM D2598 |
| Specific gravity @ 60 °F |
- |
0.5071 |
ASTM D2598 |