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27980

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)

Recherchez un Certificats d'analyse (COA) en saisissant le numéro de lot du produit. Les numéros de lot figurent sur l'étiquette du produit après les mots "Lot" ou "Batch".

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