20521-42-0

Basic information

• Product Name: 2-vinyl-2-butenal
• Synonyms: 2-vinyl-2-butenal;2-Ethenyl-2-butenal
• CAS NO: 20521-42-0
• Molecular Formula: C₆H₈O
• Molecular Weight: 96.12712
• EINECS: 243-859-9
• Mol File: 20521-42-0.mol
• Article Data: 1

Chemical Properties

• Boiling Point: 148.1°Cat760mmHg
• Flash Point: 52.2°C
• Appearance: /
• Density: 0.847g/cm³
• Vapor Pressure: 4.29mmHg at 25°C
• Refractive Index: 1.436
• CAS DataBase Reference: 2-vinyl-2-butenal(CAS DataBase Reference)
• NIST Chemistry Reference: 2-vinyl-2-butenal(20521-42-0)
• EPA Substance Registry System: 2-vinyl-2-butenal(20521-42-0)

Safety Data

• Hazardous Substances Data: 20521-42-0(Hazardous Substances Data)

Usage

Description

2-vinyl-2-butenal, also known as crotonaldehyde, is a chemical compound with the molecular formula C6H8O. It is a colorless liquid with a strong, pungent odor and is highly flammable. 2-vinyl-2-butenal is primarily used in the production of various industrial products, but it is also recognized as a hazardous substance due to its toxic properties.

Uses

Used in Food and Beverage Industry:
2-vinyl-2-butenal is used as a precursor for the production of sorbic acid, which serves as a preservative in food and beverages to extend their shelf life and prevent spoilage.
Used in Plastics and Rubber Industry:
2-vinyl-2-butenal is utilized in the manufacturing of synthetic rubber and plastics, contributing to the development of various plastic products and materials with specific properties.
Used in Chemical Synthesis:
2-vinyl-2-butenal is used as a building block in the production of other organic compounds, playing a role in the synthesis of a range of chemical products.

InChI:InChI=1/C6H8O/c1-3-6(4-2)5-7/h3-5H,1H2,2H3/b6-4+

Upstream product

• 19700-96-0 hexa-1,5-diene-3,4-diol 
• 127-09-3 sodium acetate 
• 75-07-0 acetaldehyde 

Downstream Products

• 97-96-1 2-Ethylbutyraldehyde 
• 88-09-5 2-Ethylbutanoic acid 

Relevant articles and documents

Synthesis of C4 and C8 Chemicals from Ethanol on MgO-Incorporated Faujasite Catalysts with Balanced Confinement Effects and Basicity

A new type of catalyst has been designed to adjust the basicity and level of molecular confinement of KNaX faujasites by controlled incorporation of Mg through ion exchange and precipitation of extraframework MgO clusters at varying loadings. The catalytic performance of these catalysts was compared in the conversion of C2 and C4 aldehydes to value-added products. The product distribution depends on both the level of acetaldehyde conversion and the fraction of magnesium as extraframework species. These species form rather uniform and highly dispersed nanostructures that resemble nanopetals. Specifically, the sample containing Mg only in the form of exchangeable Mg2+ ions has much lower activity than those in which a significant fraction of Mg exists as extraframework MgO. Both the (C6+C8)/C4 and C8/C6 ratios increase with additional extraframework Mg at high acetaldehyde conversion levels. These differences in product distribution can be attributed to 1) higher basicity density on the samples with extraframework species, and 2) enhanced confinement inside the zeolite cages in the presence of these species. Additionally, the formation of linear or aromatic C8 aldehyde compounds depends on the position on the crotonaldehyde molecule from which abstraction of a proton occurs. In addition, catalysts with different confinement effects result in different C8 products.