Acetic acid (data page)
1996830
221693710
2008-06-25T17:36:40Z
128.164.237.100
/* Thermodynamic properties */
<!-- To obtain a blank version of this page, type <nowiki>{{chembox supplement}}</nowiki> and save the page -->
This page provides supplementary chemical data on [[acetic acid]].
== Material Safety Data Sheet == <!-- KEEP this header, it is linked to from the infobox on the main article page -->
The handling of this chemical may incur notable safety precautions. It is highly recommend that you seek the Material Safety Datasheet ([[Material safety data sheet|MSDS]]) for this chemical from a reliable source such as [http://www2.siri.org/msds/index.php SIRI], and follow its directions. Safety data
in condensed form is available from the [http://ptcl.chem.ox.ac.uk/MSDS/AC/acetic_acid.html PTCL Safety web site] at
[http://www.ox.ac.uk Oxford University], U.K.
== Structure and properties == <!-- KEEP this header, it is linked to from the infobox on the main article page -->
{| border="1" cellspacing="0" cellpadding="3" style="margin: 0 0 0 0.5em; background: #FFFFFF; border-collapse: collapse; border-color: #C0C090;"
! {{chembox header}} | Structure and properties
|-
| [[Index of refraction]], ''n''<sub>D</sub>
| 1.3716
|-
| [[Dielectric constant]], ε<sub>r</sub>
| 6.15 ε<sub><small>0</small></sub> at 20 °C <!-- Please omit if not applicable -->
|-
| [[Bond strength (chemistry)|Bond strength]]
| ? <!-- Specify which bond. Please omit if not applicable -->
|-
| [[Bond length]]
| ? <!-- Specify which bond. Please omit if not applicable -->
|-
| [[Bond angle]]
| ? <!-- Specify which angle, e.g. Cl-P-O. Please omit if not applicable -->
|-
| [[Magnetic susceptibility]]
| ? <!-- Please omit if not applicable -->
|-
| [[Surface tension]]
| 26.6 dyn/cm at 30°C
|-
| [[Viscosity]]<ref name="lange_1669">''Lange's Handbook of Chemistry'', 10th ed. pp 1669-1674</ref>
|
{|
| 1.222 mPa·s || at 20°C
|-
| 1.0396 mPa·s || at 30°C
|-
| 0.7956 mPa·s || at 50°C
|-
| 0.4244 mPa·s || at 110°C
|}
|-
|}
== Thermodynamic properties == <!-- KEEP this header, it is linked to from the infobox on the main article page -->
{| border="1" cellspacing="0" cellpadding="6" style="margin: 0 0 0 0.5em; background: #FFFFFF; border-collapse: collapse; border-color: #C0C090;"
! {{chembox header}} | Phase behavior
|-
| [[Triple point]]
| 289.8 K (16.7 °C), ? Pa
|-
| [[Critical point]]
| 593 K (320 °C), 57.8 bar
|-
| [[Eutectic point]] with water
| –26.7 °C
|-
| [[Standard enthalpy change of fusion|Std enthalpy change<br/>of fusion]]Δ<sub>fus</sub>''H''<sup><s>o</s></sup>
| +11.7 kJ/mol
|-
| [[Standard entropy change of fusion|Std entropy change<br/>of fusion]]Δ<sub>fus</sub>''S''<sup><s>o</s></sup>
| 40.5 J/(mol·K)
|-
| [[Standard enthalpy change of vaporization|Std enthalpy change<br/>of vaporization]]Δ<sub>vap</sub>''H''<sup><s>o</s></sup>
| +23.7 kJ/mol
|-
| [[Standard entropy change of vaporization|Std entropy change<br/>of vaporization]]Δ<sub>vap</sub>''S''<sup><s>o</s></sup>
| ? J/(mol·K)
|-
! {{chembox header}} | Solid properties
|-
| [[Standard enthalpy change of formation|Std enthalpy change<br/>of formation]] Δ<sub>f</sub>''H''<sup><s>o</s></sup><sub>solid</sub>
| ? kJ/mol
|-
| [[Standard molar entropy]]<br/>''S''<sup><s>o</s></sup><sub>solid</sub>
| ? J/(mol K)
|-
| [[Heat capacity]] ''c<sub>p</sub>''
| ? J/(mol K)
|-
! {{chembox header}} | Liquid properties
|-
| [[Standard enthalpy change of formation|Std enthalpy change<br/>of formation]] Δ<sub>f</sub>''H''<sup><s>o</s></sup><sub>liquid</sub>
| −483.5 kJ/mol
|-
| [[Standard molar entropy]]<br/>''S''<sup><s>o</s></sup><sub>liquid</sub>
| 158.0 J/(mol K)
|-
| [[Enthalpy of combustion]], Δ<sub>c</sub>''H''<sup><s>o</s></sup><sub>
| –876.1 kJ/mol
|-
| [[Heat capacity]] ''c<sub>p</sub>''
| 123.1 J/(mol K)
|-
! {{chembox header}} | Gas properties
|-
| [[Standard enthalpy change of formation|Std enthalpy change<br/>of formation]] Δ<sub>f</sub>''H''<sup><s>o</s></sup><sub>gas</sub>
| –438.1 kJ/mol
|-
| [[Standard molar entropy]]<br/>''S''<sup><s>o</s></sup><sub>gas</sub>
| 195 J/(mol K)
|-
| [[Heat capacity]] ''c<sub>p</sub>''
| 63.4 J/(mol K)
|-
| [[van der Waals equation|van der Waals' constants]]<ref name="lange1522">''Lange's Handbook of Chemistry'' 10th ed, pp 1522-1524</ref>
| a = 1782.3 L<sup>2</sup> kPa/mol<sup>2</sup><br> b = 0.1068 liter per mole
|-
|}
==Vapor pressure of liquid==
{|
|-
|
{| border="1" cellspacing="0" cellpadding="6" style="margin: 0 0 0 0.5em; background: white; border-collapse: collapse; border-color: #C0C090;"
|-
| {{chembox header}} | '''P in mm Hg''' || 1 || 10 || 40 || 100 || 400 || 760 || 1520 || 3800 || 7600 || 15200 || 30400|| 45600
|-
| {{chembox header}} | '''T in °C''' || –17.2 || 17.5 || 43.0 || 63.0 || 99.0 || 118.1 || 143.5 || 180.3 || 214.0 || 252.0 || 297.0 || —
|}
Table data obtained from ''CRC Handbook of Chemistry and Physics'' 44th ed.<br>
{|
|
[[Image:aceticAcidVaporPressure.png|thumb|192px|left|Acetic acid vapor pressure vs. temperature. Uses formula: <math>\scriptstyle P_{mmHg}=10^{7.80307 - \frac {1651.2} {225+T}}</math> for T = 0 to 36°C
<math>\scriptstyle P_{mmHg}=10^{7.18807 - \frac {1416.7} {211+T}}</math> for T = 36 to 170°C<br>
Formula from ''Lange's Handbook of Chemistry'', 10th ed.]]
|
[[Image:logAceticAcidVaporPressure.png|thumb|358px|left|log<sub>10</sub> of acetic acid vapor pressure vs. temperature. Uses formula: <math>\scriptstyle \log_{10}P_{mmHg}=7.80307 - \frac {1651.2} {225+T}</math> for T = 0 to 36°C
<p> <br>
<math>\scriptstyle \log_{10}P_{mmHg}=7.18807 - \frac {1416.7} {211+T}</math> for T = 36 to 170°C<br>
Formula from ''Lange's Handbook of Chemistry'', 10th ed.
]]
|}
==Distillation data==
{| border="1" cellspacing="0" cellpadding="6" style="margin: 0 0 0 0.5em; background: {{{bgc|white}}}; border-collapse: collapse; border-color: {{{bc|#C0C090}}};"
|-
| bgcolor="#D0D0D0" align="center" colspan="3"| '''Vapor-liquid Equilibrium for Acetic acid/Water'''<ref>{{cite web|url=http://www.cheric.org/research/kdb/hcvle/hcvle.php|title=Binary Vapor-Liquid Equilibrium Data|publisher=Chemical Engineering Research Information Center|format=Queriable database|accessdaymonth=5 May|accessyear=2007}}</ref><br>''P'' = 760 mm Hg
|- {{chembox header}}
! rowspan="2" | BP<br>Temp.<br>°C
! colspan="2" | % by mole water
|- {{chembox header}}
! liquid !! vapor
|-
| 116.5 || 2.2 || 5.8
|-
| 114.6 || 5.4 || 12.3
|-
| 113.4 || 8.6 || 16.8
|-
| 113.5 || 9.9 || 18.3
|-
| 113.1 || 10.1 || 18.8
|-
| 110.6 || 18.9 || 29.8
|-
| 107.8 || 30.3 || 43.3
|-
| 106.1 || 41.3 || 54.5
|-
| 104.4 || 52.2 || 64.9
|-
| 103.1 || 62.4 || 73.5
|-
| 102.3 || 69.6 || 79.2
|-
| 101.6 || 77.8 || 85.1
|-
| 100.8 || 87.6 || 91.4
|-
| 100.5 || 92.3 || 94.4
|-
| 100.4 || 94.5 || 96.0
|-
| 100.1 || 98.5 || 98.9
|-
|}
== Spectral data == <!-- KEEP this header, it is linked to from the infobox on the main article page -->
{| border="1" cellspacing="0" cellpadding="3" style="margin: 0 0 0 0.5em; background: #FFFFFF; border-collapse: collapse; border-color: #C0C090;"
! {{chembox header}} | [[UV/VIS spectroscopy|UV-Vis]]
|-
| [[Lambda-max|λ<sub>max</sub>]]
| 207 [[Nanometre|nm]] (gas phase)
|-
| [[Extinction coefficient]], ε
| ?
|-
! {{chembox header}} | [[Infrared|IR]]
|-
| Major absorption bands<ref name="aist">{{cite web|url=http://riodb01.ibase.aist.go.jp/sdbs/cgi-bin/cre_index.cgi?lang=eng|title=Spectral Database for
Organic Compounds|publisher=Advanced Industrial Science and Technology|format=Queriable database|accessdaymonth=9 June|accessyear=2007}}</ref>
|
{|
|-
| colspan="2" align="center" | (liquid film)
|-
! Wave number !! transmittance
|-
| 2937 [[Centimetre|cm]]<sup>−1</sup> || 26%
|-
| 2684 [[Centimetre|cm]]<sup>−1</sup> || 41%
|-
| 2631 [[Centimetre|cm]]<sup>−1</sup> || 39%
|-
| 2569 [[Centimetre|cm]]<sup>−1</sup> || 49%
|-
| 1758 [[Centimetre|cm]]<sup>−1</sup> || 19%
|-
| 1714 [[Centimetre|cm]]<sup>−1</sup> || 4%
|-
| 1617 [[Centimetre|cm]]<sup>−1</sup> || 66%
|-
| 1414 [[Centimetre|cm]]<sup>−1</sup> || 20%
|-
| 1360 [[Centimetre|cm]]<sup>−1</sup> || 39%
|-
| 1294 [[Centimetre|cm]]<sup>−1</sup> || 12%
|-
| 1053 [[Centimetre|cm]]<sup>−1</sup> || 67%
|-
| 1016 [[Centimetre|cm]]<sup>−1</sup> || 41%
|-
| 937 [[Centimetre|cm]]<sup>−1</sup> || 35%
|-
| 892 [[Centimetre|cm]]<sup>−1</sup> || 41%
|-
| 629 [[Centimetre|cm]]<sup>−1</sup> || 31%
|-
| 607 [[Centimetre|cm]]<sup>−1</sup> || 49%
|-
| 481 [[Centimetre|cm]]<sup>−1</sup> || 36%
|-
| 473 [[Centimetre|cm]]<sup>−1</sup> || 52%
|-
|}
|-
! {{chembox header}} | [[NMR Spectroscopy|NMR]]
|-
| [[Proton NMR]] <!-- Link to image of spectrum -->
| δ CDCl<sub>3</sub> 2.10 (3H), 11.42 (1H)
|-
| [[Carbon-13 NMR]] <!-- Link to image of spectrum -->
| δ CDCl<sub>3</sub> 20.8, 178.1
|-
| Other NMR data <!-- Insert special data e.g. <sup>19</sup>F chem. shifts, omit if not used -->
|
|-
! {{chembox header}} | [[Mass Spectrometry|MS]]
|-
| Masses of <br>main fragments
| 60 (75%), 45 (90%),<br/>43 (100%), 42 (13%), 15 (17%)
|-
|}
== References ==
<references/>
*{{nist}}
*Orlando, John J.; Tyndall, Geoffrey S. (2003). [http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TGY-483STKX-8&_user=10&_handle=V-WA-A-W-WW-MsSAYVW-UUW-U-AABVVDCEED-AABWUCZDED-VDWUCAVDC-WW-U&_fmt=summary&_coverDate=05%2F05%2F2003&_rdoc=5&_orig=browse&_srch=%23toc%235267%232003%23998429997%23418946!&_cdi=5267&view=c&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=89de30203134fccccf77c80dce6b5ccf "Gas phase UV absorption spectra for peracetic acid, and for acetic acid monomers and dimers."] ''J. Photochem. Photobiol. A: Chem.'' '''157''', 161–66.
Except where noted otherwise, data relate to [[standard ambient temperature and pressure]].
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