Description

4-Ethylbenzaldehyde is a versatile aromatic aldehyde intermediate of significant importance in fine chemical synthesis. Its value lies in the ethyl substituent, which modifies reactivity and physical properties compared to benzaldehyde, making it a key building block for more complex molecules. This compound is primarily needed by manufacturers in the pharmaceutical, agrochemical, and fragrance industries for the production of active ingredients, dyes, and specialty chemicals.

Application

• Pharmaceutical Intermediates: Serves as a crucial precursor in synthesizing various active pharmaceutical ingredients (APIs) and drug candidates.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and pesticides, where its aromatic structure is incorporated into active molecules.
• Fragrance and Flavor Compounds: Acts as a starting material for creating specific aromatic aldehydes and derivatives used in perfumery and flavoring agents.
• Dye and Pigment Manufacturing: Functions as an intermediate in the synthesis of complex organic dyes and pigments.
• Organic Synthesis & Research: Employed as a versatile reagent in academic and industrial R&D for constructing heterocyclic compounds and other specialty chemicals.
• Polymer Additives: Can be used to synthesize specialty monomers or additives that modify polymer properties.

Basic Information

Product Name	4-Ethylbenzaldehyde
CAS No.	4748-78-1
Molecular Formula	C9H10O
Molecular Weight	134.18 g/mol
Synonyms	p-Ethylbenzaldehyde; 4-Ethylbenzenecarboxaldehyde; p-Ethylbenzenecarboxaldehyde; 1-Ethyl-4-formylbenzene; Benzaldehyde, 4-ethyl-; 4-Ethyl-benzaldehyde; p-Ethylbenzaldehyde (primary name)
EINECS	225-268-8

Quality Control

Our 4-Ethylbenzaldehyde is produced under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure it meets high-purity standards suitable for demanding synthesis applications. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is easily oxidized; for long-term storage, consider maintaining under an inert atmosphere (e.g., nitrogen) to preserve quality.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC/HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.