538191

Butyraldehyde

≥99.0%, dry

• Synonym(s): Butanal
• Linear Formula: CH₃CH₂CH₂CHO
• CAS Number: 123-72-8
• Molecular Weight: 72.11
• Beilstein: 506061
• EC Number: 204-646-6
• MDL number: MFCD00007023
• UNSPSC Code: 12352114
• PubChem Substance ID: 329758004
• NACRES: NA.21

Properties

• vapor density: 2.5 (vs air)
• vapor pressure: 90 mmHg ( 20 °C)
• Assay: ≥99.0%
• autoignition temp.: 390 °F
• expl. lim.: 12.5 %
• impurities: ≤0.30% (water)
• refractive index: n20/D 1.380 (lit.)
• bp: 75 °C (lit.)
• mp: −96 °C (lit.)
• solubility: water: soluble 50 g/L at 20 °C
• density: 0.8 g/mL at 25 °C (lit.)
• SMILES string: [H]C(=O)CCC
• InChI: 1S/C4H8O/c1-2-3-4-5/h4H,2-3H2,1H3
• InChI key: ZTQSAGDEMFDKMZ-UHFFFAOYSA-N

Description

General description

Butyraldehyde (n-Butyraldehyde), an aliphatic aldehyde, can be synthesized by dehydrogenation of butanol in the presence of zinc catalyst. It is an important precursor for preparing polyvinylbutyral. The mechanism of pyrolysis of butyraldehyde in the gas-phase has been described. The kinetic study of the condensation reaction between butyraldehyde and poly(vinyl alcohol) indicates retardation effect.

Application

Butyraldehyde (n-Butyraldehyde) may be used in the preparation of 2-ethylhexanal (2EH) via hydrogenation in the presence of tetraamine palladium(II) chloride supported on the potassium ion-exchanged zeolite X (Pd/KXW) and on the potassium ion-added zeolite X (Pd/KXU).

Safety Information

• Pictograms: GHS02,GHS07
• Signal Word: Danger
• Hazard Statements: H225,H319
• Precautionary Statements: P210 - P233 - P240 - P241 - P242 - P305 + P351 + P338
• Hazard Classifications: Eye Irrit. 2 - Flam. Liq. 2
• Storage Class Code: 3 - Flammable liquids
• WGK: WGK 1
• Flash Point(F): <50.0 °F - Pensky-Martens closed cup
• Flash Point(C): < 10 °C - Pensky-Martens closed cup