What Is CAS 141-78-6?
CAS 141-78-6 identifies Ethyl Acetate, also called Ethyl Ethanoate or Acetic Acid Ethyl Ester. It has the molecular formula C4H8O2 and a molecular weight of 88.11 g/mol. The clear, volatile liquid is widely recognized for its characteristic fruity odor, rapid evaporation and useful solvency.
Why Industry Uses Ethyl Acetate
Ethyl Acetate dissolves many compatible resins, binders and organic compounds while evaporating relatively quickly. These characteristics support its use in coatings, lacquers, printing inks and adhesives. It is also used as an extraction, purification and process solvent in pharmaceutical, fine-chemical and natural-product operations.
Application Fit Is More Than Solvency
A solvent must fit the full process. Evaporation rate influences drying and film formation, while water and acidity may affect hydrolysis-sensitive materials or resin stability. Non-volatile residue can be important where cleanliness or final appearance matters. Recovery equipment, emissions controls, worker exposure and fire protection also form part of industrial selection.
Procurement Checklist
- Confirm CAS 141-78-6 and the required grade.
- Review assay, water, acidity, color and residue.
- Align COA test methods between suppliers.
- Specify quantity, package and destination.
- Review the current SDS and transport documentation.
See the Ethyl Acetate CAS 141-78-6 product page for specifications and quotation information.
Safety note: Ethyl Acetate is highly flammable. Use this overview together with the current SDS and approved site controls.
Why identity, properties and industrial use needs more than a purity number
Ethyl acetate is a volatile ester with CAS 141-78-6. Its useful balance of solvency and evaporation supports coatings, inks, adhesives, extraction and synthesis, but the final choice must consider water tolerance, resin compatibility, flash-point controls and residual-solvent requirements.
For international procurement, the useful question is not simply whether a material is described as high purity. The buyer must establish whether the chemical identity, analytical methods, impurity profile, packaging and shipment documents fit the receiving plant’s approved specification. Product names and grade labels vary between suppliers, while a written specification creates a testable commercial requirement.
Technical parameters to confirm
| No. | Parameter or review point | Procurement action |
|---|---|---|
| 1 | identity and assay | Confirm numeric limit, method and batch result before shipment. |
| 2 | water and acidity | Confirm numeric limit, method and batch result before shipment. |
| 3 | ethanol and other process-related impurities | Review when relevant to the validated process and destination market. |
| 4 | colour and density | Review when relevant to the validated process and destination market. |
| 5 | non-volatile residue and evaporation behaviour | Review when relevant to the validated process and destination market. |
Results should be interpreted together. For example, an acceptable assay does not compensate for an unsuitable water result, a broad distillation tail or excessive residue. The test method also matters because two laboratories can report different values when sample handling, instrument conditions or reporting limits are not aligned.
Where the specification matters in practice
- coatings, printing inks and adhesive formulations
- extraction and chemical processing
- cleaning applications validated for the substrate and ventilation system
Application references describe common industrial contexts, not an automatic recommendation for every process. Compatibility, exposure control, waste treatment and finished-product requirements should be validated by the user. A small representative sample and a documented trial are often more informative than comparing supplier brochures.
Packaging, storage and shipment review
Ethyl Acetate is a chemical material that requires packaging and logistics appropriate to its hazards, destination and transport mode. Before shipment, confirm package type and net weight, closure integrity, label information, batch traceability, pallet or container loading plan, and the current SDS. Storage conditions must follow the SDS and local rules, with attention to ignition control, ventilation, segregation, temperature and moisture where relevant.
For export orders, dangerous-goods classification, UN information, packing group, port acceptance and carrier requirements must be checked against the current transport documents. These details can change with formulation, concentration, packaging and route, so they should not be inferred from a marketing page alone.
Practical buyer checklist
- Confirm the chemical name and CAS number: Ethyl Acetate, 141-78-6.
- Send the target specification, application, annual quantity and destination country.
- Compare the specification sheet with a recent representative COA.
- Identify critical impurities and state numeric limits and methods in the purchase order.
- Review SDS, labels, packaging and transport feasibility before commercial commitment.
- Approve a sample or first batch under the receiving plant’s normal test method.
Selection conclusion: Match the grade to the end-use specification. A general industrial product should not be represented as food or pharmacopeial grade without the relevant standard, manufacturing controls and documentation.
Frequently asked questions
Does the CAS number guarantee the grade?
No. A CAS number identifies a substance or defined composition; it does not establish purity, impurity limits, manufacturing controls or suitability for a regulated application.
Is a typical COA enough to approve an order?
A typical COA helps during preliminary comparison. Final release should use the agreed specification and the COA for the actual batch, supported by receiving inspection when required.
Can one grade be substituted without a process trial?
Substitution should be assessed against the validated process. Differences in water, trace impurities, evaporation, residue or packaging can affect performance even when headline assay values look similar.
Product and quotation information
Review the current Ethyl Acetate product page for the listed grade and available supply information. For a useful quotation, provide the required purity or specification, quantity, package preference, destination port or country, and required documents. Xinchen can then review product availability and export feasibility against those requirements.
Authoritative references
Reference links are provided for substance identification, hazard and regulatory context. Always use the latest official source, the current SDS and qualified professional advice for compliance decisions.