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Acetaldehyde_(data_page)

Acetaldehyde (data page)

This page provides supplementary chemical data on acetaldehyde.

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1 Material Safety Data Sheet
2 Structure and properties
3 Thermodynamic properties
4 Vapor pressure of liquid
5 Spectral data
6 References

Material Safety Data Sheet

The handling of this chemical may incur notable safety precautions. It is highly recommended that you seek the Material Safety Datasheet (MSDS) for this chemical from a reliable source such as SIRI, and follow its directions. MSDS is available at Safety Information Resources, inc.

Structure and properties

Structure and properties
Index of refraction, n_D	1.3392 at 18°C
Abbe number	?
Dielectric constant, ε_r	21.1 ε₀ at 21 °C
Bond strength	?
Bond length	?
Bond angle	?
Magnetic susceptibility	?
Surface tension^[1]	22.3 dyn/cm at 10°C 21.2 dyn/cm at 20°C 17.0 dyn/cm at 50°C
Viscosity^[2]	0.2751 mPa·s at 0°C 0.2521 mPa·s at 10°C 0.2307 mPa·s at 20°C

Thermodynamic properties

Phase behavior
Triple point	? K (? °C), ? Pa
Critical point^[3]	466 K (183 °C), 5570 kPa
Std enthalpy change of fusion, Δ_fusH^o	2.310 kJ/mol
Std entropy change of fusion, Δ_fusS^o	15.43 J/(mol·K)
Std enthalpy change of vaporization, Δ_vapH^o	26.12 kJ/mol
Std entropy change of vaporization, Δ_vapS^o	? J/(mol·K)
Solid properties
Std enthalpy change of formation, Δ_fH^o_solid	? kJ/mol
Standard molar entropy, S^o_solid	? J/(mol K)
Heat capacity, c_p	? J/(mol K)
Liquid properties
Std enthalpy change of formation, Δ_fH^o_liquid	–196.4 kJ/mol
Standard molar entropy, S^o_liquid	117.3 J/(mol K)
Enthalpy of combustion, Δ_cH^o	–279.0 kJ/mol
Heat capacity, c_p	96.21 J/(mol K) at 0°C 89.05 J/(mol K) at 25°C
Gas properties
Std enthalpy change of formation, Δ_fH^o_gas	–170.7 kJ/mol
Standard molar entropy, S^o_gas	250.3 J/(mol K)
Heat capacity, c_p	55.32 J/(mol K) at 25°C

Vapor pressure of liquid

P in mm Hg		1	10	40	100	400	760
T in °C		–81.5	–56.8	–37.8	–22.6	4.9	20.2

Table data obtained from CRC Handbook of Chemistry and Physics 44th ed.

Spectral data

UV-Vis

λ_max

? nm

Extinction coefficient, ε

Major absorption bands^[4]

Wave number	transmittance
(liquid film)
3432 cm⁻¹	72%
3001cm⁻¹	66%
2846 cm⁻¹	42%
2733 cm⁻¹	44%
1727 cm⁻¹	4%
1629 cm⁻¹	79%
1429 cm⁻¹	36%
1401 cm⁻¹	41%
1350 cm⁻¹	25%
1179 cm⁻¹	70%
1114 cm⁻¹	29%
945 cm⁻¹	77%
767 cm⁻¹	61%
514 cm⁻¹	35%

NMR

Proton NMR

Carbon-13 NMR

Other NMR data

Masses of
main fragments

References

^ Lange's Handbook of Chemistry, 10th ed. pp 1661-1663
^ Lange's Handbook of Chemistry, 10th ed. pp 1669-1674
^ ^a ^b Pure Component Properties. Chemical Engineering Research Information Center. Retrieved on 27 May 2007.
^ [http://www.aist.go.jp/RIODB/SDBS/cgi-bin/cre_index.cgi Spectral Database for Organic Compounds] (Queriable database). Advanced Industrial Science and Technology. Retrieved on 9 June 2007.

NIST Standard Reference Database.

Except where noted otherwise, data relate to standard ambient temperature and pressure.

Disclaimer applies.

Category: Chemical data pages

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Acetaldehyde_(data_page)". A list of authors is available in Wikipedia.