Isopropyl alcohol (IPA), also known as 2-propanol, is a colorless, volatile compound widely used as a solvent, disinfectant, and cleaning agent. Due to its fast evaporation rate, low toxicity, and strong antimicrobial properties, IPA is indispensable in pharmaceuticals, personal care, electronics, and industrial applications.
Name: Isopropyl Alcohol (IPA)
Chemical Formula: C3H8O
CAS Number: 67-63-0
Appearance: Colorless, volatile liquid with a sharp odor
Solubility: Miscible with water, alcohols, and most organic solvents
Purity Grades: 70% (disinfectant), 99% (industrial/analytical grade)
Effective antimicrobial agent against bacteria, fungi, and viruses
Rapid evaporation, leaving no residue
Excellent solvent properties for oils, resins, and adhesives
Water miscibility for easy dilution and versatile applications
Cost-effective and widely available globally
Industry | Function | Examples |
---|---|---|
Pharmaceuticals | Disinfectant and solvent | Hand sanitizers, antiseptics |
Personal Care | Solvent in cosmetics | Perfumes, deodorants, hair sprays |
Electronics & Precision | Cleaning agent | Circuit boards, lenses, optical tools |
Industrial Cleaning | Degreasing and surface preparation | Metal cleaning, ink removal |
Healthcare & Laboratories | Sterilization and cleaning | Medical instruments, lab equipment |
Mode of Action
Isopropyl alcohol denatures proteins and disrupts cell membranes, effectively killing bacteria, fungi, and viruses. Its solvent ability dissolves oils and residues, aiding in cleaning and sterilization processes.
Broad antimicrobial efficacy for disinfection
Fast evaporation without residue
Safe and low toxicity when used properly
Highly versatile across industries
Cost-effective for both industrial and household use
Flammable, requiring careful storage and handling
Can cause skin dryness or irritation with frequent use
Less effective on surfaces with heavy organic residue (requires pre-cleaning)
Q: What is the best concentration for disinfection?
A: 70% IPA is most effective for disinfection as it penetrates cell walls better than higher concentrations.
Q: Can isopropyl alcohol be used on electronics?
A: Yes, 99% IPA is commonly used for cleaning delicate electronics due to fast evaporation and non-residue properties.
Q: Is IPA safe in cosmetics?
A: Yes, it is widely used in regulated amounts as a solvent in perfumes, hair products, and deodorants.
Isopropyl alcohol is a versatile chemical crucial in disinfection, cleaning, and manufacturing. Its fast evaporation, antimicrobial power, and broad solvent compatibility make it a staple in pharmaceuticals, personal care, and industrial sectors.