Blowing Agents

Chemical Properties

Formula
CH3(CH2)3CH3
Formula Weight
72.15
Melting point
-130°
Boiling Point
36°
Flash Point
-49°(-57°F)
Density
0.626
Refractive Index
1.3580
Storage & Sensitivity
Ambient temperatures.
Solubility
Miscible with water.

Applications

n-Pentane is used in consumer merchandise such as spot lifters/cleaners and foaming shave gels and in commercial products such as a blowing agent for expanded polystyrene (foam) insulation. It may also be used as a solvent (in pure form) in laboratory, chemical analysis, and other settings where a highly volatile non-polar solvent is needed.

Notes

Stable under normal ambient and anticipated storage and handling conditions of temperature. Avoidable conditions are heat, sparks, fire, and oxidizing agents.

Blowing Agent

Blowing agent plays a fundamental role in the production of polystyrene (PS), polyurethane (PU) and polyisocyanurate (PIR) insulations foam. A small quantity of blowing agent indirectly provides important performance characteristics to these foams as great thermal insulation properties.
Pentane :
Pentane is a hydrocarbon solvent coming directly from the natural gas and crude oil. The product is separated from the other alkanes in an oil refinery by fractional distillation and isomerisation. This gas is one of the most volatile liquid alkane at ambient temperature. It is also used as a solvent that can evaporate quickly and easily.
Pentane as blowing agent in (PUR) insulation foam :
N-Pentane (CAS : 78-78-4)
N-Pentane
Isopentane (CAS : 78-78-4)
Isopentane
Cyclo pentane (CAS : 287-92-3)
Cyclo pentane
Or our following blends :
Blend iso/n-pentane (25 – 75%) : It is a mixture of 25% of isopentane and 75% of n-pentane.
Blend iso/n-pentane (20 – 80%) : It is a mixture of 20% of isopentane and 80% of n-pentane.
Blend iso/cylo-pentane (30 – 70%) : It is a mixture of 30% of isopentane and 70% of cyclopentane.