- Chemical name
- Ethyl acetate / ethyl ethanoate
- CAS number
- 141-78-6
- Formula
- C4H8O2
- Chemical family
- Ester
Ethyl acetate and solvent mixtures
Ethyl acetate is a volatile, flammable ester solvent. Ethyl ethanoate is another name for the same compound. It can be present in coatings and solvent mixtures, so an entry on a safety data sheet does not mean that the whole product is pure ethyl acetate.
Use the product label, formulation information and supplier safety data sheet to identify the starting material. Odour is not a reliable identification method. Keeping the product name with the CAS number also helps distinguish a formulated mixture from a single-substance solvent.
How process use changes the waste
Spent ethyl acetate can contain inks, coatings, resins, cleaning products, solids, other solvents or added water. An unused container and a drum of process washings can therefore need different waste assessments even when both contain the same named solvent.
Waste from different production lines is only comparable when the formulations and process history support that conclusion. An analysis from one stream does not describe a materially different batch simply because ethyl acetate is present in both.
Recovery and authorised treatment
A suitably segregated solvent stream may be considered for recovery. The receiving operator needs enough composition information to assess acceptance, and waste classification must describe the material being removed. If recovery is unsuitable, the waste needs an authorised treatment or disposal route.
Drain disposal and uncontrolled evaporation are not appropriate routes for ethyl acetate waste. Mixing can change the composition and hazard profile, while container condition can affect the packaging and collection arrangements for a flammable solvent.
What to establish for ethyl acetate waste
The product formulation, concentration, production or cleaning use and other solvents, solids or residues are the main points to establish. Quantities, packaging and available analysis help distinguish unused stock from process waste and support the recovery or treatment assessment.