- Product Details
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Chemical name: Isopentane
Chinese Name: 异戊烷
Counter Name: 2-Methylbutane
Grade:For Type II polymerization process
Molecular formula: C5H12
Structural formula:
Molecular weight:72.15
CAS Number: 78-78-4
2-Methylbutane (isopentane), C5H12, is a flammable liquid and exhibits physical properties very similar to those of pentane. It has been detected in urban air.2-Methylbutane is an alkane that is butane substituted by a methyl group at position 2. It has a higher BP than butane because, although similarly branched, it has a higher MW. A useful analogy for comparing molecules with the same size of longest chain is that of cylindrical-shaped molecules. It has a role as a refrigerant. Biological samples flash frozen for example with a combination of liquid nitrogen and methylbutane can then be used for storage, cryosection, etc.
Watery colorless liquid with a gasoline-like odor. Floats on water. Flammable, irritating vapor is produced. Boiling point is 82°F.
Applications:
Isopentane is an organic, branched-chain alkane with five carbon atoms. 2-Methylbutane undergoes catalytic dehydrogenation in the presence of chromia-alumina catalyst to form isoamylenes, which can undergo further dehydrogenation to form isoprene. It may also be used as a solvent in the preparation of trans-Bis(triethylphosphine) (hydroxy carbonyl) (phenyl) platinum(II), a metallacarboxylic acid. It can be used as a solvent, in manufacture of chlorinated derivatives, and blowing agent for polystyrene.
Isopentane is used in a closed loop in geothermal power production to drive turbines, used in conjunction with dry ice or liquid nitrogen, to freeze tissues for cryosectioning in histology.
Technical Index
Index
Common grade
Appearance
clear liquid
Isopentane content,w/%
≥95%
Total pentane,w%
≥99.8%
Bromine index(mBr/100g)
≤5
Non-volatile matter(mg/100ml)
≤1
Benzene(mg/kg)
≤1
Chroma(Co-Pt)
≤15
Density(20℃)/(kg/m3)
600-630
Water(mg/kg)
≤20
Sulfur(mg/kg)
≤1
Packing:200kg/ drum
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