4-Phenylbutanal CAS 18328-11-5

Identity and specification

4-Phenylbutanal is an aromatic aldehyde with a four-carbon aldehyde chain bearing a phenyl group at carbon 4. It should be distinguished from phenylacetaldehyde, 3-phenylpropanal and other homologous or isomeric aldehydes.

Quality controls for purchasing

• Request GC assay and limits for homologous aldehydes, alcohol, acid and high-boiling condensation products.
• Define water, color, odor, peroxide or oxidation indicators and stabilizer status where applicable.
• Record manufacturing date, storage history and retest guidance for freshness-sensitive applications.

Applications and grade selection

4-Phenylbutanal may be evaluated as an aldehyde intermediate and as an odor-active raw material in controlled fragrance development. Suitability depends on purity, odor profile and destination-market requirements. A sample should be assessed in the actual synthesis or formulation.

Storage and handling

Store tightly sealed, protected from light, heat and oxidizing conditions. Inert headspace or controlled temperature may be appropriate when specified by the supplier. Minimize repeated opening and follow the SDS for flammable or irritating vapor controls.

Documentation and quotation details

State the intended synthesis or fragrance evaluation, GC assay, impurity and color limits, stabilizer requirement, package size, quantity, destination and delivery schedule. Request COA, SDS and a representative sample before bulk approval.