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Is isopropyl alcohol the same as n-propanol?

Jan 05, 2026 Leave a message

Is isopropyl alcohol the same as n-propanol?

No, they are not the same. They are structural isomers-they share the same molecular formula (C₃H₈O) but have different atomic arrangements.

  • 1-Propanol (n-Propanol): CH₃-CH₂-CH₂-OH (Primary alcohol, straight chain)
  • Isopropyl Alcohol (2-Propanol): (CH₃)₂CH-OH (Secondary alcohol, branched chain)

This structural difference leads to different physical properties (e.g., boiling point: 1-propanol 97°C, IPA 82°C), chemical reactivity, and primary uses.

 

Isopropyl Alcohol vs. 1-Propanol

 

Feature Isopropyl Alcohol (IPA) 1-Propanol (n-Propanol)
CAS Number 67-63-0 71-23-8
Common Name Rubbing Alcohol Propyl Alcohol
Main Use Disinfectant & Cleaner
(Hospitals, homes, electronics)
Industrial Solvent & Chemical Ingredient
(Inks, coatings, synthesis)
Chemical Structure Branched
(OH group on the middle carbon)
Straight-Chain
(OH group on the end carbon)
Boiling Point Lower (82°C)
Evaporates faster
Higher (97°C)
Evaporates slower

 

 

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Other Hot-Selling Products

 

Product Name CAS NO
Dichloromethane DCM CAS 75-09-2
Ethyl acetate CAS 141-78-6
Dimethyl Sulfoxide DMSO

CAS 67-68-5

Acetonitrile CAS 75-05-8
Isopropyl alcohol CAS 67-63-0
1-Propanol CAS 71-23-8
o-Xylene CAS 95-47-6

 

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N-Propyl Alcohol (NPA)

 

99% Normal Propanol

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