Acetone (Industrial Grade, 99.5% min)
CAS 67-64-1Acetone (CAS 67-64-1, dimethyl ketone) is the most widely used general-purpose solvent in composite manufacturing, supplied as industrial grade at ≥99.
Key Features
- ✓Fastest-evaporating common composite solvent — rapid equipment cleaning, minimal soak time
- ✓Excellent solvency for uncured UPR, VER, and epoxy at room temperature
- ✓Fully miscible with styrene, MEKP, and standard composite resin additives
- ✓Low cost per litre — most economical cleaning solvent for high-volume FRP shops
- ✓Highly flammable (flash point −18°C) — Class IB liquid, requires NFPA 30 compliant storage
Specifications
| Parameter | Value |
|---|---|
| Purity | ≥99.5% by GC |
| Appearance | Clear, colorless liquid |
| CAS Number | 67-64-1 |
| Flash point | −18°C (ASTM D93) |
| Boiling point | 56°C |
| Water content | < 0.5% (Karl Fischer) |
| Density (20°C) | 0.791 g/cm³ |
| Relative evaporation rate | 5.6 (n-BuAc = 1.0) |
FAQ
Yes. Acetone is highly effective for cleaning uncured liquid epoxy resin from tools, brushes, rollers, and mixing equipment when used promptly — within 15–30 minutes of resin contact, before any gelling begins. Once epoxy begins to gel (increase in viscosity, string formation), acetone will only partially remove it, and fully cured epoxy is essentially insoluble in acetone. For epoxy cleaning, wipe off as much liquid resin as possible mechanically first, then flush with acetone. Multiple acetone flushes and wipes are more effective than a single soak. For epoxy-specific cleaning, denatured ethanol or MEK may also be used as alternatives. Always dispose of acetone waste containing uncured epoxy as hazardous waste per local regulations.