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Acetaldehyde (data page)

{{Short description|Chemical data page}}

{{Use dmy dates|date=January 2023}}

This page provides supplementary chemical data on acetaldehyde.

== Material Safety Data Sheet ==

The handling of this chemical may require safety precautions. The directions on the Material Safety Datasheet (MSDS) should be followed.

  • [http://sdsdata.org/3939 SDSdata.org index]

== Structure and properties ==

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! {{chembox header}} | Structure and properties

Index of refraction, nD

| 1.3392 at 18 °C

Abbe number

|?

Dielectric constant, εr

| 21.1 ε0 at 21 °C

Bond strength

| ?

Bond length

| ?

Bond angle

| ?

Magnetic susceptibility

| ?

Surface tensionLange's Handbook of Chemistry, 10th ed. pp. 1661–1663

| 22.3 dyn/cm at 10 °C
21.2 dyn/cm at 20 °C
17.0 dyn/cm at 50 °C

ViscosityLange's Handbook of Chemistry, 10th ed. pp. 1669–1674

| 0.2751 mPa·s at 0 °C
0.2521 mPa·s at 10 °C
0.2307 mPa·s at 20 °C

== Thermodynamic properties ==

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! {{chembox header}} | Phase behavior

Triple point

| ? K (? °C), ? Pa

Critical point{{Cite web|url=http://www.cheric.org/research/kdb/hcprop/cmpsrch.php|title=Pure Component Properties|publisher=Chemical Engineering Research Information Center|accessdate=27 May 2007| archiveurl= https://web.archive.org/web/20070603180431/http://www.cheric.org/research/kdb/hcprop/cmpsrch.php| archivedate= 3 June 2007 | url-status= live}}

| 466 K (183 °C), 5570 kPa

Std enthalpy change
of fusion, ΔfusHo

| 2.310 kJ/mol

Std entropy change
of fusion, ΔfusSo

| 15.43 J/(mol·K)

Std enthalpy change
of vaporization, ΔvapHo

| 26.12 kJ/mol

Std entropy change
of vaporization, ΔvapSo

| ? J/(mol·K)

{{chembox header}} | Solid properties
Std enthalpy change
of formation, ΔfHosolid

| ? kJ/mol

Standard molar entropy,
Sosolid

| ? J/(mol K)

Heat capacity, cp

| ? J/(mol K)

{{chembox header}} | Liquid properties
Std enthalpy change
of formation, ΔfHoliquid

| –196.4 kJ/mol

Standard molar entropy,
Soliquid

| 117.3 J/(mol K)

Enthalpy of combustion, ΔcHo

| –1167 kJ/mol

Heat capacity, cp

| 96.21 J/(mol K) at 0 °C
89.05 J/(mol K) at 25 °C

{{chembox header}} | Gas properties
Std enthalpy change
of formation, ΔfHogas

| –170.7 kJ/mol

Standard molar entropy,
Sogas

| 250.3 J/(mol K)

Heat capacity, cp

| 55.32 J/(mol K) at 25 °C

Vapor pressure of liquid

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{{chembox header}} | P in mm Hg11040100400760
{{chembox header}} | T in °C–81.5–56.8–37.8–22.64.920.2

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

Image:LogAcetaldehydeVaporPressure.png{{Clear}}

== Spectral data ==

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! {{chembox header}} | UV-Vis

λmax

| ? nm

Extinction coefficient, ε

| ?

{{chembox header}} | IR
Major absorption bands{{Cite web|url=http://www.aist.go.jp/RIODB/SDBS/cgi-bin/cre_index.cgi |title=Spectral Database for Organic Compounds |publisher=Advanced Industrial Science and Technology |format=Queriable database |accessdate=9 June 2007 |url-status=dead |archiveurl=https://web.archive.org/web/20060505120103/http://www.aist.go.jp/RIODB/SDBS/cgi-bin/cre_index.cgi |archivedate=5 May 2006 }}

|

{|

colspan="2" align="center" | (liquid film)
Wave numbertransmittance
3432 cm−172%
3001 cm−166%
2846 cm−142%
2733 cm−144%
1727 cm−14%
1629 cm−179%
1429 cm−136%
1401 cm−141%
1350 cm−125%
1179 cm−170%
1114 cm−129%
945 cm−177%
767 cm−161%
514 cm−135%

|-

! {{chembox header}} | NMR

|-

| Proton NMR

|  

|-

| Carbon-13 NMR

|  

|-

| Other NMR data

|  

|-

! {{chembox header}} | MS

|-

| Masses of
main fragments

|  

|-

|}

References

{{Cite journal|url=http://webbook.nist.gov/chemistry/|title=NIST Standard Reference Database|year=1997 |doi=10.18434/T4D303 |last1=Linstrom |first1=Peter |publisher=National Institute of Standards and Technology }}

{{Chemical data page general note}}

{{DEFAULTSORT:Acetaldehyde (data page)}}

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