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> | &minus;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 || &nbsp;— |} 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>&nbsp;<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>&minus;1</sup> || 26% |- | 2684 [[Centimetre|cm]]<sup>&minus;1</sup> || 41% |- | 2631 [[Centimetre|cm]]<sup>&minus;1</sup> || 39% |- | 2569 [[Centimetre|cm]]<sup>&minus;1</sup> || 49% |- | 1758 [[Centimetre|cm]]<sup>&minus;1</sup> || 19% |- | 1714 [[Centimetre|cm]]<sup>&minus;1</sup> || 4% |- | 1617 [[Centimetre|cm]]<sup>&minus;1</sup> || 66% |- | 1414 [[Centimetre|cm]]<sup>&minus;1</sup> || 20% |- | 1360 [[Centimetre|cm]]<sup>&minus;1</sup> || 39% |- | 1294 [[Centimetre|cm]]<sup>&minus;1</sup> || 12% |- | 1053 [[Centimetre|cm]]<sup>&minus;1</sup> || 67% |- | 1016 [[Centimetre|cm]]<sup>&minus;1</sup> || 41% |- | 937 [[Centimetre|cm]]<sup>&minus;1</sup> || 35% |- | 892 [[Centimetre|cm]]<sup>&minus;1</sup> || 41% |- | 629 [[Centimetre|cm]]<sup>&minus;1</sup> || 31% |- | 607 [[Centimetre|cm]]<sup>&minus;1</sup> || 49% |- | 481 [[Centimetre|cm]]<sup>&minus;1</sup> || 36% |- | 473 [[Centimetre|cm]]<sup>&minus;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 --> | &nbsp; |- ! {{chembox header}} | [[Mass Spectrometry|MS]] |- | Masses of <br>main fragments | &nbsp; 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&ndash;66. Except where noted otherwise, data relate to [[standard ambient temperature and pressure]]. [[wikipedia:Chemical infobox|Disclaimer]] applies. [[Category:Chemical data pages]] [[bg:Оцетна киселина (данни)]]