Pentane vs. n-Pentane: What's The Difference Between Them
Pentane is a general name for any molecule with the chemical formula C₅H₁₂.
n-Pentane is the specific name for the straight-chain version of that molecule. It is one of three possible forms ("isomers") of pentane.
| Feature | Pentane | n-Pentane (Normal Pentane) |
|---|---|---|
| Basic Concept | A general term for a group of three structural isomers with the same molecular formula C5H12. | A single, specific isomer of pentane; the unbranched (linear) form of C5H12. |
| Isomer Composition | Includes three variants:1. n-Pentane (straight chain)2. Isopentane (2-methylbutane, branched chain)3. Neopentane (2,2-dimethylpropane, highly branched chain) | Only the straight-chain isomer: CH3CH2CH2CH2CH3 |
| CAS Number | No single CAS number (covers three distinct chemicals). | Unique CAS number: 109-66-0 |
CAS 109-66-0 Safety
Pentanes and related solvents highly flammable. Heating will cause rise in pressure with risk of bursting. Vapor/air mixtures are explosive. Store in tightly closed containers in a cool, well-ventilated area. Pentanes are incompatible with strong oxidizers. Air-supplied respirators are recommended when handling, as pentanes will irritate eyes, skin, nose, and lungs. Isooctane is a nephrotoxin.
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