Technical acetone is one of the most commonly used solvents in laminates, when working with epoxy and polyester resins, as well as in woodworking and metal workshops. Below we have gathered the most important information: parameters, applications, health and safety rules, storage, and disposal.
What is technical acetone
A colorless, highly volatile liquid with an intense odor, which mixes perfectly with water and most organic solvents. Valued for its rapid evaporation and high degreasing effectiveness.
Key properties
- Boiling point: approx. 56 °C (very rapid evaporation).
- Volatility and flammability: low flash point – use exclusively away from sources of fire and sparks.
- Solubility: mixes with water; effectively dissolves fats, fresh resins, waxes, oils, and many workshop contaminants.
- Material compatibility: can dull/dissolve some plastics (e.g., ABS, plexiglass) and fresh coatings – always perform a test.
Most common practical applications
- Degreasing surfaces before laminating, bonding, and painting: metals, glass, some composites.
- Cleaning tools after resins (brushes, stirrers, guns) – preferably immediately after use, before the resin gels.
- Removing fresh contamination from resins and adhesives – short rubbing, without prolonged soaking of the substrate.
- Preparing molds (after preliminary washing): rapid evaporation shortens the time between operations.
Safe working rules (Health and Safety)
- Work in a well-ventilated area; avoid inhaling vapors. Consider a half mask with appropriate filters for organic vapors.
- Chemically resistant gloves, safety goggles, skin-protective clothing.
- Absolutely no fire or sparking; keep away from heated elements, heaters, and heat guns.
- Clean up spills/spillage with an absorbent; do not pour into the sewer.
How to use effectively
- Degreasing with "two cloths": dampen the first with acetone and wipe; with the second (dry) one, collect the dissolved dirt. Change sides and cloths frequently.
- Short contact with the substrate: minimum time, maximum evaporation. On paints/test coatings, always perform a spot test.
- Cleaning tools after resin: immerse and scrub in fresh acetone; then wipe with a clean cloth and dry.
Storage and transport
- Tightly closed original packaging, a cool and dry place, away from ignition sources.
- Do not pour into food containers. Label secondary containers.
- Store out of reach of children, in an upright position, with a tray to catch potential leaks.
Disposal
Treat waste and soiled cleaning cloths as hazardous waste – return them to a collection point in accordance with local regulations. Do not pour them into the sewer or onto the soil.
FAQ
Is acetone suitable for degreasing before epoxy? Yes, this is a common practice, but be careful with sensitive substrates and fresh coatings – always perform a spot test. After degreasing, allow it to evaporate completely.
How does acetone differ from nitro/IPA thinners? Acetone evaporates very quickly and aggressively dissolves many contaminants; IPA is gentler on surfaces, but removes greasy stains more slowly; nitro thinners often leave more residue and have a stronger odor.
Can I use it to thin paints/resins? Only if the paint/resin manufacturer explicitly allows it. Otherwise, use a dedicated thinner.
