Butyraldehyde
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| Names | |||
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| Preferred IUPAC name
Butanal | |||
| Other names
Butyraldehyde | |||
| Identifiers | |||
3D model (JSmol) |
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| ChEBI | |||
| ChEMBL | |||
| ChemSpider | |||
| ECHA InfoCard | 100.004.225 | ||
| EC Number |
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| KEGG | |||
PubChem CID |
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| RTECS number |
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| UNII | |||
| UN number | 1129 | ||
CompTox Dashboard (EPA) |
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| Properties | |||
| C4H8O | |||
| Molar mass | 72.107 g·mol−1 | ||
| Appearance | Colorless liquid | ||
| Odor | Pungent, aldehyde odor | ||
| Density | 0.8016 g/mL | ||
| Melting point | −96.86 °C (−142.35 °F; 176.29 K) | ||
| Boiling point | 74.8 °C (166.6 °F; 347.9 K) | ||
| Critical point (T, P) | 537 K (264 °C), 4.32 MPa (42.6 atm) | ||
| 7.6 g/100 mL (20 °C) | |||
| Solubility | Miscible with organic solvents | ||
| log P | 0.88 | ||
| −46.08·10−6 cm3/mol | |||
Refractive index (nD) |
1.3766 | ||
| Viscosity | 0.45 cP (20 °C) | ||
| 2.72 D | |||
| Thermochemistry | |||
Heat capacity (C) |
163.7 J·mol−1·K−1 (liquid) 103.4 J·mol−1·K−1 (gas) | ||
Std molar entropy (S⦵298) |
246.6 J·mol−1·K−1 (liquid) 343.7 J·mol−1·K−1 (gas) | ||
Std enthalpy of formation (ΔfH⦵298) |
−239.2 kJ·mol−1 (liquid) −204.8 kJ·mol−1 (gas) | ||
Std enthalpy of combustion (ΔcH⦵298) |
2470.34 kJ·mol−1 | ||
| Hazards | |||
| GHS labelling: | |||
| Danger | |||
| H225, H319 | |||
| P210, P280, P302+P352, P304+P340, P305+P351+P338 | |||
| NFPA 704 (fire diamond) | |||
| Flash point | −7 °C (19 °F; 266 K) | ||
| 230 °C (446 °F; 503 K) | |||
| Explosive limits | 1.9–12.5% | ||
| Lethal dose or concentration (LD, LC): | |||
LD50 (median dose) |
2490 mg/kg (rat, oral) | ||
| Safety data sheet (SDS) | Sigma-Aldrich | ||
| Related compounds | |||
Related aldehyde |
Propionaldehyde Pentanal | ||
Related compounds |
Butan-1-ol Butyric acid, isobutyraldehyde | ||
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references | |||
Butyraldehyde, also known as butanal, is an organic compound with the formula CH3(CH2)2CHO. This compound is the aldehyde derivative of butane. It is a colorless flammable liquid with an unpleasant smell. It is miscible with most organic solvents.