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HomeProduct name list4-Ethylbenzoic acid

4-Ethylbenzoic acid

  • CAS NO.:619-64-7
  • Empirical Formula: C9H10O2
  • Molecular Weight: 150.17
  • MDL number: MFCD00002570
  • EINECS: 210-605-3
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-10-31 18:15:48
4-Ethylbenzoic acid Structural

What is 4-Ethylbenzoic acid?

Chemical properties

It is a white to beige powder with a melting point of 112-113℃. It is not soluble in water, but can be dissolved in benzene and toluene.

The Uses of 4-Ethylbenzoic acid

4-Ethylbenzoic acid was used in the synthesis of ethyl 4-vinyl-α-cyano-β-phenylcinnamate. It was also used to functionalize the edge of “pristine” graphite in the presence of polyphosphoric acid/phosphorus pentoxide.

Definition

ChEBI: 4-Ethylbenzoic acid is a member of benzoic acids.

What are the applications of Application

4-Ethylbenzoic acid has various applications such as being used as an intermediate in the production of pesticide insecticides, including tebufenozide and methoxyfenozide, as well as an initiator of carbon nanotube materials. Additionally, it can also use as an intermediate in the production of liquid crystals.

Preparation

The preparation of 4-ethylbenzoic acid can be done in the following steps:
1. Add ethylbenzene and trichloroacetaldehyde in the reaction kettle.
2. Add anhydrous aluminum trichloride in batches at 0 °C.
3. Stir and react at -10 ~ 0 °C for 2 hours after the addition.
4. Add dilute hydrochloric acid to the mixed solution to decompose the remaining aluminum trichloride.
5. Wash with NaHCO3 and water.
6. Distill the organic layer to recover ethylbenzene.
7. Distill to obtain p-ethylbenzene-2,2,2-trichloroethanol.
8. Dissolve the trichloroethanol in methanol.
9. Add NaOH solution and stir.
10. Add dropwise 30% hydrogen peroxide aqueous solution to the mixture.
11. Stir until the trichloroethanol disappears.
12. Acidify with HCl to obtain crystalline 4-ethylbenzoic acid.

General Description

4-Ethylbenzoic acid reacts with lanthanum nitrate in aqueous solution to yield the polymer catena-poly[[aqua(4-ethylbenzoic acid-κO)lanthanum(III)]-tri-μ-4-ethylbenzoato].

Properties of 4-Ethylbenzoic acid

Melting point: 112-113 °C(lit.)
Boiling point: 271.51°C (estimate)
Density  1.0937 (estimate)
refractive index  1.5188 (estimate)
storage temp.  Sealed in dry,Room Temperature
solubility  Chloroform (Sparingly), Methanol (Slightly)
form  Powder
pka pK1:4.35 (25°C)
color  White to beige
BRN  2041840
CAS DataBase Reference 619-64-7(CAS DataBase Reference)
NIST Chemistry Reference 4-Ethylbenzoic acid(619-64-7)
EPA Substance Registry System Benzoic acid, 4-ethyl- (619-64-7)

Safety information for 4-Ethylbenzoic acid

Signal word Warning
Pictogram(s)
ghs
Exclamation Mark
Irritant
GHS07
GHS Hazard Statements H319:Serious eye damage/eye irritation
Precautionary Statement Codes P264:Wash hands thoroughly after handling.
P264:Wash skin thouroughly after handling.
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.
P337+P313:IF eye irritation persists: Get medical advice/attention.

Computed Descriptors for 4-Ethylbenzoic acid

InChIKey ZQVKTHRQIXSMGY-UHFFFAOYSA-N

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