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Sigma-Aldrich

Crotonaldehyde, mixture of cis and trans

ratio of cis- and trans-isomers (~1:20), ≥99.5% (GC)

Synonyme(s) :

2-Butenal, mixture of cis and trans

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About This Item

Formule linéaire :
CH3CH=CHCHO
Numéro CAS:
4170-30-3
Poids moléculaire :
70.09
Numéro Beilstein :
1209254
Numéro MDL:
MFCD00007003
Code UNSPSC :
12352100
ID de substance PubChem :
57648285
Nomenclature NACRES :
NA.22

Niveau de qualité

200

Pureté

≥99.5% (GC)

Forme

liquid

Contient

~0.1% 2,6-di-tert-butyl-4-methylphenol as stabilizer
~1% H2O as stabilizer

Indice de réfraction

n20/D 1.437

Point d'ébullition

101-102 °C (lit.)

Densité

0.853 g/mL at 20 °C (lit.)

Température de stockage

2-8°C

Chaîne SMILES 

C\C=C\C=O

InChI

1S/C4H6O/c1-2-3-4-5/h2-4H,1H3/b3-2+

Clé InChI

MLUCVPSAIODCQM-NSCUHMNNSA-N

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Description générale

Crotonaldehyde(2-Butenal) is an α, β-unsaturated aldehyde and extremely reactive compound. It serves as a chemical building block in the production of solvents, sorbates, and, to a lower extent, pharmaceuticals and aroma compounds. Additionally, it can be used as an alcohol denaturant, in leather tanning and in the manufacturing of rubber accelerators.

Application

Crotonaldehyde is used:

  • In the manufacturing of sorbic acid that are widely employed as food preservatives to avoid the food spoilage by microorganisms.

Mention d'avertissement

Danger

Classification des risques

Acute Tox. 2 Inhalation - Acute Tox. 3 Dermal - Acute Tox. 3 Oral - Aquatic Acute 1 - Eye Dam. 1 - Flam. Liq. 2 - Muta. 2 - Skin Irrit. 2 - STOT RE 2 - STOT SE 3

Organes cibles

Respiratory system

Code de la classe de stockage

3 - Flammable liquids

Classe de danger pour l'eau (WGK)

WGK 3

Point d'éclair (°F)

55.4 °F - closed cup

Point d'éclair (°C)

13 °C - closed cup

Équipement de protection individuelle

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter

Certificats d'analyse (COA)

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