4-Ethylbenzaldehyde

CAS NO.：4748-78-1
Empirical Formula: C9H10O
Molecular Weight: 134.18
MDL number: MFCD00006956
EINECS: 225-268-8
SAFETY DATA SHEET (SDS)
Update Date: 2026-03-17 20:01:48

What is 4-Ethylbenzaldehyde?

Chemical properties

CLEAR COLOURLESS TO SLIGHTLY YELLOW LIQUID

Chemical properties

4-Ethylbenzaldehyde has a sweet, bitter-almond odor

Occurrence

Reported found in roasted turkey, grilled and roasted beef, roasted chicken, cider, black tea, roasted peanuts and cooked trassi

The Uses of 4-Ethylbenzaldehyde

It is used as a perfuming agent in cosmetics industry. It is also used as a pharmaceutical intermediate.

The Uses of 4-Ethylbenzaldehyde

4-Ethylbenzaldehyde has been used in the synthesis of 4,4′-diaminotriphenylmethanes under microwave irradiation, which is useful for parallel library syntheses.

Definition

ChEBI: 4-Ethylbenzaldehyde is a carbonyl compound.

Aroma threshold values

Detection: 13 ppb; recognition: 40 ppb

Synthesis Reference(s)

Synthetic Communications, 26, p. 315, 1996 DOI: 10.1080/00397919608003620

General Description

4-Ethylbenzaldehyde is a by-product of disinfection. Kinetic constants (KI) of 4-ethylbenzaldehyde for inhibition of the diphenolase activity of mushroom tyrosinase has been investigated.

Properties of 4-Ethylbenzaldehyde

Boiling point:	221 °C (lit.)
Density	0.979 g/mL at 25 °C (lit.)
vapor pressure	16.67Pa at 25℃
FEMA	3756 \| 4-ETHYLBENZALDEHYDE
refractive index	n20/D 1.539(lit.)
Flash point:	198 °F
storage temp.	4°C, stored under nitroge
form	Liquid
color	Clear colorless to light yellow
Odor	at 10.00 % in dipropylene glycol. bitter almond sweet anise
Water Solubility	Not miscible or difficult to mix in water. Soluble in alcohol.
Sensitive	Air Sensitive
JECFA Number	865
BRN	636027
CAS DataBase Reference	4748-78-1(CAS DataBase Reference)
NIST Chemistry Reference	Benzaldehyde, 4-ethyl-(4748-78-1)
EPA Substance Registry System	Benzaldehyde, 4-ethyl- (4748-78-1)

Safety information for 4-Ethylbenzaldehyde

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07
GHS Hazard Statements	H227:Flammable liquids H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation
Precautionary Statement Codes	P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P280:Wear protective gloves/protective clothing/eye protection/face protection. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P370+P378:In case of fire: Use … for extinction. P403+P235:Store in a well-ventilated place. Keep cool. P501:Dispose of contents/container to..…