Butyraldehyde

Butyraldehyde

Structural formula of butyraldehyde Flat structure
Ball-and-stick model
Names
Preferred IUPAC name Butanal
Other names Butyraldehyde
Identifiers
CAS Number	123-72-8 Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:15743 Y
ChEMBL	ChEMBL1478334
ChemSpider	256 Y
ECHA InfoCard	100.004.225
EC Number	204-646-6
KEGG	C01412 Y
PubChem CID	261
RTECS number	ES2275000
UNII	H21352682A Y
UN number	1129
CompTox Dashboard (EPA)	DTXSID8021513
InChI InChI=1S/C4H8O/c1-2-3-4-5/h4H,2-3H2,1H3 Y Key: ZTQSAGDEMFDKMZ-UHFFFAOYSA-N Y InChI=1/C4H8O/c1-2-3-4-5/h4H,2-3H2,1H3 Key: ZTQSAGDEMFDKMZ-UHFFFAOYAZ
SMILES O=CCCC
Properties
Chemical formula	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)
Solubility in water	7.6 g/100 mL (20 °C)
Solubility	Miscible with organic solvents
log P	0.88
Magnetic susceptibility (χ)	−46.08·10−6 cm3/mol
Refractive index (nD)	1.3766
Viscosity	0.45 cP (20 °C)
Dipole moment	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:
Pictograms
Signal word	Danger
Hazard statements	H225, H319
Precautionary statements	P210, P280, P302+P352, P304+P340, P305+P351+P338
NFPA 704 (fire diamond)	3 3 0
Flash point	−7 °C (19 °F; 266 K)
Autoignition temperature	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). Y verify (what is YN ?) 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.