27980

Crotonaldehyde, mixture of cis and trans

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

• Synonym(s): 2-Butenal, mixture of cis and trans
• Linear Formula: CH₃CH=CHCHO
• CAS Number: 4170-30-3
• Molecular Weight: 70.09
• Beilstein/REAXYS Number: 1209254
• MDL number: MFCD00007003
• UNSPSC Code: 12352100
• PubChem Substance ID: 57648285
• NACRES: NA.22

Properties

• Quality Level: 200
• assay: ≥99.5% (GC)
• form: liquid
• contains: ~0.1% 2,6-di-tert-butyl-4-methylphenol as stabilizer; ~1% H₂O as stabilizer
• refractive index: n20/D 1.437
• bp: 101-102 °C (lit.)
• density: 0.853 g/mL at 20 °C (lit.)
• functional group: aldehyde
• storage temp.: 2-8°C
• SMILES string: C\C=C\C=O
• InChI: 1S/C4H6O/c1-2-3-4-5/h2-4H,1H3/b3-2+
• InChI key: MLUCVPSAIODCQM-NSCUHMNNSA-N

Description

General description

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.

Safety Information

• pictograms: GHS02,GHS06,GHS08,GHS05,GHS09
• signalword: Danger
• hcodes: H225,H301 + H311,H315,H318,H330,H335,H341,H373,H400
• pcodes: P210 - P273 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• Hazard Classifications: 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
• target_organs: Respiratory system
• Storage Class: 3 - Flammable liquids
• wgk_germany: WGK 3
• flash_point_f: 55.4 °F - closed cup
• flash_point_c: 13 °C - closed cup
• ppe: Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter