What is Isopropyl Alcohol CAS 67-63-0?
CAS 67-63-0 Isopropyl alcohol, also known as propan-2-ol, isopropanol or 2-propanol, is a colourless, flammable chemical compound with a strong odour and the chemical formula CH₃CHOHCH₃. It is the simplest example of a secondary alcohol, where the alcohol carbon atom is attached to two other carbon atoms, and is an isopropyl group linked to a hydroxyl group. It is a structural isomer of 1-propanol and ethyl methyl ether.
Product Name: Isopropyl Alcohol
Synonyms:2-Propanol/IPA/Isopropanol
CAS No.: 67-63-0
Molecular Formula: C3H8O
Purity: 70% / 91% / 99%
What is the difference between 70%, 91%, and 99% IPA?
The percentages refer to the concentration of pure isopropyl alcohol (CAS 67-63-0) in water. A concentration of 70% is more effective for disinfection because the presence of water slows evaporation, thereby increasing surface contact time. 91% and 99% solutions are used in industrial, electronic and laboratory settings where quick evaporation and low water content are critical.
70% vs. 91% vs. 99% : Which Is Best?
The "best" concentration of Isopropyl Alcohol (CAS 67-63-0) depends entirely on your specific use case.
| Use | Best Choice |
|---|---|
| Disinfecting skin & surfaces (first aid, killing germs) | 70% |
| General household cleaning (counters, doorknobs) | 70% |
| Cleaning electronics (circuit boards, screens) | 91% or 99% |
| Removing sticky residues, grease, or inks | 91% or 99% |
| DIY hand sanitizer (if permitted/formulated correctly) | 70% (USP Grade) |
| Precipitation of DNA/RNA in a lab | 70-100% (Lab Grade) |
| Fast-evaporating cleaner for optics, metals | 99% |
| Sanitizing a small wound | 70% |
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