Isopropyl Alcohol (IPA, 99.9% min)
CAS 67-63-0Isopropyl Alcohol (IPA, 2-propanol, CAS 67-63-0) at 99.
Key Features
- ✓Mild solvency for cured resins — cleans contamination without attacking thermoset surfaces
- ✓Water-miscible — suitable for silane hydrolysis and aqueous cleaning applications
- ✓Higher flash point than acetone (12°C vs. −18°C) — slightly reduced immediate flammability hazard
- ✓Semi-permanent release agent compatible — cleans buildup without stripping release layers
- ✓99.9% purity — minimal water content prevents surface moisture contamination in silane treatment
Specifications
| Parameter | Value |
|---|---|
| Purity | ≥99.9% by GC |
| Appearance | Clear, colorless liquid |
| CAS Number | 67-63-0 |
| Flash point | 12°C (ASTM D93) |
| Boiling point | 82.5°C |
| Water content | < 0.1% (Karl Fischer) |
| Density (20°C) | 0.785 g/cm³ |
FAQ
IPA has relatively weak solvency for liquid epoxy resin compared to acetone or MEK. It can clean small amounts of freshly deposited liquid epoxy if used immediately and with vigorous wiping. For significant epoxy spills or tool cleaning, IPA is less effective than acetone or MEK and may require more solvent and more effort. IPA is better suited for surface decontamination (dust, light oil, fingerprints) before bonding than for removing epoxy resin deposits. For epoxy tool cleaning, use acetone, MEK, or a dedicated tool cleaner with stronger ketone or ester solvents. IPA is most valuable in composite shops for its gentleness on cured thermoset surfaces and for applications where water-miscibility is needed.