This page provides supplementary chemical data on ethanol .
Material Safety Data Sheet structure of ethanol Structure and properties Structure and properties Index of refraction , n 251.361 Dielectric constant , εr24.3 ε0 at 20 °C Bond strength ? Bond length ? Bond angle ? Magnetic susceptibility 5.8×10−7 (cgs units, volume) Surface tension 22.39 dyn/cm at 25 °C Thermal conductivity 0.1660 W m−1 K−1 (saturated liquid at 300 K) Viscosity 6.285 mPa·s at −50 °C 4.656 mPa·s at −40 °C 3.530 mPa·s at −30 °C 2.731 mPa·s at −20 °C 2.419 mPa·s at −15 °C 2.151 mPa·s at −10 °C 1.920 mPa·s at −5 °C 1.720 mPa·s at 0 °C 1.546 mPa·s at 5 °C 1.394 mPa·s at 10 °C 1.261 mPa·s at 15 °C 1.144 mPa·s at 20 °C 1.040 mPa·s at 25 °C 0.948 mPa·s at 30 °C 0.794 mPa·s at 40 °C 0.670 mPa·s at 50 °C 0.570 mPa·s at 60 °C 0.487 mPa·s at 70 °C 0.452 mPa·s at 75 °C 6.285 mPa·s at −50 °C 4.656 mPa·s at −40 °C 3.530 mPa·s at −30 °C 2.731 mPa·s at −20 °C 2.419 mPa·s at −15 °C 2.151 mPa·s at −10 °C 1.920 mPa·s at −5 °C 1.720 mPa·s at 0 °C 1.546 mPa·s at 5 °C 1.394 mPa·s at 10 °C 1.261 mPa·s at 15 °C 1.144 mPa·s at 20 °C 1.040 mPa·s at 25 °C 0.948 mPa·s at 30 °C 0.794 mPa·s at 40 °C 0.670 mPa·s at 50 °C 0.570 mPa·s at 60 °C 0.487 mPa·s at 70 °C 0.452 mPa·s at 75 °C
Thermodynamic properties Phase behavior Triple point 150 K (−123 °C), 0.00043 Pa Critical point 514 K (241 °C), 63 bar Std enthalpy change of fusion , ΔfusH o+4.9 kJ/mol Std entropy change of fusion , ΔfusS o+31 J/(mol·K) Std enthalpy change of vaporization , ΔvapH o+42.3±0.4 kJ/mol Std entropy change of vaporization , ΔvapS o109.67 J/(mol·K) Molal freezing point constant −1.99 °C kg/mol Solid properties Std enthalpy change of formation , ΔfH osolid−277.7 kJ/mol Standard molar entropy , S osolid160.7 J/(mol K) Heat capacity , cp 111.46 J/(mol K) Liquid properties Std enthalpy change of formation , ΔfH oliquid−277.38 kJ/mol Standard molar entropy , S oliquid159.9 J/(mol K) Enthalpy of combustion , ΔcH o−1370.7 kJ/mol Heat capacity , cp 112.4 J/(mol K) Gas properties Std enthalpy change of formation , ΔfH ogas−235.3 kJ/mol Standard molar entropy , S ogas283 J/(mol K) Heat capacity , cp 78.28 J/(mol K) at 90 °C 87.53 J/(mol K) at 110-220 °C Heat capacity ratio , γ = cp /cv 1.13 at 90 °C van der Waals' constants a = 1217.9 L2 kPa/mol2 b = 0.08407 L/mol
Spectral data UV-Vis λmax ? nm Extinction coefficient , ε? IR Major absorption bands (liquid film) Wave number transmittance 880 cm−1 22% 1048 cm−1 6% 1089 cm−1 19% 1275 cm−1 52% 1329 cm−1 44% 1384 cm−1 32% 1418 cm−1 33% 1650 cm−1 26% 1926 cm−1 62% 2899 cm−1 12% 2930 cm−1 13% 2977 cm−1 4% (liquid film) Wave number transmittance 880 cm−1 22% 1048 cm−1 6% 1089 cm−1 19% 1275 cm−1 52% 1329 cm−1 44% 1384 cm−1 32% 1418 cm−1 33% 1650 cm−1 26% 1926 cm−1 62% 2899 cm−1 12% 2930 cm−1 13% 2977 cm−1 4% NMR Proton NMR Carbon-13 NMR 18 July 2011 at the Wayback Machine ; Other NMR data MS Masses of main fragments
Vapor pressure of liquid P in mm Hg 1 10 40 100 400 760 1,520 3,800 7,600 15,200 30,400 45,600 P in Pa 133.3 1,333 5,333 13,332 53,329 101,325 202,650 506,625 1,013,250 2,026,500 4,053,000 6,079,501 T in °C −31.3 −2.3 19.0 34.9 63.5 78.4 97.5 126.0 151.8 183.0 218.0 242.0 T in K 241.85 270.85 292.15 308.05 336.65 351.55 370.65 399.15 424.95 456.15 491.15 515.15
Ethanol vapor pressure vs. temperature. Uses formula P mm Hg = 10 8.04494 − 1554.3 222.65 + T {\displaystyle P_{\text{mm Hg}}=10^{8.04494-{\frac {1554.3}{222.65+T}}}} Log10 of ethanol vapor pressure vs. temperature. Uses formula log 10 P mm Hg = 8.04494 − 1554.3 222.65 + T {\displaystyle \log _{10}P_{\text{mm Hg}}=8.04494-{\tfrac {1554.3}{222.65+T}}}
Density of ethanol at various temperatures Data obtained from Lange 1967
T °Cρ, g/cm3 T °Cρ, g/cm3 T °Cρ, g/cm3 3 0.80374 16 0.79283 29 0.78182 4 0.80290 17 0.79198 30 0.78097 5 0.80207 18 0.79114 31 0.78012 6 0.80123 19 0.79029 32 0.77927 7 0.80039 20 0.78945 33 0.77841 8 0.79956 21 0.78860 34 0.77756 9 0.79872 22 0.78775 35 0.77671 10 0.79788 23 0.78691 36 0.77585 11 0.79704 24 0.78606 37 0.77500 12 0.79620 25 0.78522 38 0.77414 39 0.77329 40 0.77244
These data correlate as ρ [g/cm3] = −8.461834×10−4 T [°C] + 0.8063372 with an R 2
Properties of aqueous ethanol solutions Data obtained from Lange 1967
Mass fraction , %Volume concentration, % Mass concentration , g/(100 ml) at 15.56 °CDensity relative to 4 °C water [citation needed ] Density at 20 °C relative to 20 °C water Density at 25 °C relative to 25 °C water Freezing temperature, °C 10 °C 20 °C 25 °C 30 °C 0.0 0.0 0.0 0.99973 0.99823 0.99708 0.99568 1.00000 1.00000 0 1.0 0.99785 0.99636 0.99520 0.99379 0.99813 0.99811 2.0 0.99602 0.99453 0.99336 0.99194 0.99629 0.99627 2.5 3.13 0.99363 −1 3.0 0.99426 0.99275 0.99157 0.99014 0.99451 0.99447 4.0 5.00 3.97 0.99258 0.99103 0.98984 0.98839 0.99279 0.99274 4.8 6.00 4.76 0.98971 −2 5.0 0.99098 0.98938 0.98817 0.98670 0.99113 0.99106 5.05 6.30 5.00 0.98930 6.0 0.98946 0.98780 0.98656 0.98507 0.98955 0.98945 6.8 8.47 0.98658 −3 7.0 0.98801 0.98627 0.98500 0.98347 0.98802 0.98788 8.0 0.98660 0.98478 0.98346 0.98189 0.98653 0.98634 9.0 0.98524 0.98331 0.98193 0.98031 0.98505 0.98481 10.0 12.40 9.84 0.98393 0.98187 0.98043 0.97875 0.98361 0.98330 11.0 0.98267 0.98047 0.97897 0.97723 0.98221 0.98184 11.3 14.0 11.11 0.98006 −5 12.0 15.0 0.98145 0.97910 0.97753 0.97573 0.98084 0.98039 13.0 0.98026 0.97775 0.97611 0.97424 0.97948 0.97897 13.78 17.00 13.49 −6.1 14.0 0.97911 0.97643 0.97472 0.97278 0.97816 0.97757 15.0 0.97800 0.97514 0.97334 0.97133 0.97687 0.97619 15.02 18.50 14.68 0.97511 16.0 0.97692 0.97387 0.97199 0.96990 0.97560 0.97484 16.4 20.2 0.97336 −7.5 17.0 0.97583 0.97259 0.97062 0.96844 0.97431 0.97346 17.5 21.5 0.97194 −8.7 18.0 22.10 17.54 0.97473 0.97129 0.96923 0.96697 0.97301 0.97207 18.8 23.1 0.97024 −9.4 19.0 0.97363 0.96997 0.96782 0.96547 0.97169 0.97065 20.0 0.97252 0.96864 0.96639 0.96395 0.97036 0.96922 20.01 24.50 19.44 0.96863 20.3 24.8 0.96823 −10.6 21.0 0.97139 0.96729 0.96495 0.96242 0.96901 0.96778 22.0 0.97024 0.96592 0.96348 0.96087 0.96763 0.96630 22.11 27.00 21.43 0.96578 −12.2 23.0 0.96907 0.96453 0.96199 0.95929 0.96624 0.96481 24.0 0.96787 0.96312 0.96048 0.95769 0.96483 0.96329 24.2 29.5 0.96283 −14.0 25.0 30.40 24.12 0.96665 0.96168 0.95895 0.95607 0.96339 0.96176 26.0 0.96539 0.96020 0.95738 0.95422 0.96190 0.96018 26.7 32.4 0.95914 −16.0 27.0 0.96406 0.95867 0.95576 0.95272 0.96037 0.95856 28.0 33.90 26.90 0.96268 0.95710 0.95410 0.95098 0.95880 0.95689 29.0 0.96125 0.95548 0.95241 0.94922 0.95717 0.95520 29.9 36.1 0.95400 −18.9 30.0 36.20 28.73 0.95977 0.95382 0.95067 0.94741 0.95551 0.95345 31.0 0.95823 0.95212 0.94890 0.94557 0.95381 0.95168 32.0 0.95665 0.95038 0.94709 0.94370 0.95207 0.94986 33.0 0.95502 0.94860 0.94525 0.94180 0.95028 0.94802 33.8 40.5 0.94715 −23.6 34.0 0.95334 0.94679 0.94337 0.93986 0.94847 0.94613 35.0 0.95162 0.94494 0.94146 0.93790 0.94662 0.94422 35.04 41.90 33.25 0.94486 36.0 0.94986 0.94306 0.93952 0.93591 0.94473 0.94227 37.0 0.94805 0.94114 0.93756 0.93390 0.94281 0.94031 38.0 0.94620 0.93919 0.93556 0.93186 0.94086 0.93830 39.0 46.3 0.94431 0.93720 0.93353 0.92979 0.93886 0.93626 −28.7 40.0 0.94238 0.93518 0.93148 0.92770 0.93684 0.93421 40.04 47.40 37.61 0.93510 41.0 0.94042 0.93314 0.92940 0.92558 0.93479 0.93212 42.0 0.93842 0.93107 0.92729 0.92344 0.93272 0.93001 43.0 0.93639 0.92897 0.92516 0.92128 0.93062 0.92787 44.0 0.93433 0.92685 0.92301 0.91910 0.92849 0.92571 45.0 0.93226 0.92472 0.92085 0.91692 0.92636 0.92355 45.31 53.00 42.07 0.92406 46.0 0.93017 0.92257 0.91868 0.91472 0.92421 0.92137 46.3 53.8 0.92193 −33.9 47.0 0.92806 0.92041 0.91649 0.91250 0.92204 0.91917 48.0 0.92593 0.91823 0.91429 0.91028 0.91986 0.91697 49.0 0.92379 0.91604 0.91208 0.90805 0.91766 0.91475 50.0 0.92162 0.91384 0.90985 0.90580 0.91546 0.91251 50.16 58.0 46.04 0.91349 51.0 0.91943 0.91160 0.90760 0.90353 0.91322 0.91026 52.0 0.91723 0.90936 0.90524 0.90125 0.91097 0.90799 53.0 0.91502 0.90711 0.90307 0.89896 0.90872 0.90571 54.0 0.91279 0.90485 0.90079 0.89667 0.90645 0.90343 55.0 0.91055 0.90258 0.89850 0.89437 0.90418 0.90113 55.16 63.0 50.00 0.90220 56.0 0.90831 0.90031 0.89621 0.89206 0.90191 0.89833 56.1 63.6 0.90008 −41.0 57.0 0.90607 0.89803 0.89392 0.88975 0.89962 0.89654 58.0 0.90381 0.89574 0.89162 0.88744 0.89733 0.89423 59.0 0.90154 0.89344 0.88931 0.88512 0.89502 0.89191 60.0 0.89927 0.89113 0.88699 0.88278 0.89271 0.88959 60.33 68.0 53.98 0.89038 61.0 0.89698 0.88882 0.88466 0.88044 0.89040 0.88725 62.0 0.89468 0.88650 0.88233 0.87809 0.88807 0.88491 63.0 0.89237 0.88417 0.87998 0.87574 0.88574 0.88256 64.0 0.89006 0.88183 0.87763 0.87337 0.88339 0.88020 65.0 0.88774 0.87948 0.87527 0.87100 0.88104 0.87783 66.0 0.88541 0.87713 0.87291 0.86863 0.87869 0.87547 67.0 0.88308 0.87477 0.87054 0.86625 0.87632 0.87309 68.0 0.88071 0.87241 0.86817 0.86387 0.87396 0.87071 69.0 0.87839 0.87004 0.86579 0.86148 0.87158 0.86833 70.0 0.87602 0.86766 0.86340 0.85908 0.86920 0.86593 71.0 0.87365 0.86527 0.86100 0.85667 0.86680 0.86352 71.9 78.3 0.86311 −51.3 72.0 0.87127 0.86287 0.85859 0.85426 0.86440 0.86110 73.0 0.86888 0.86047 0.85618 0.85184 0.86200 0.85869 74.0 0.86648 0.85806 0.85376 0.84941 0.85958 0.85626 75.0 0.86408 0.85564 0.85135 0.84698 0.85716 0.85383 76.0 0.86168 0.85322 0.84891 0.84455 0.85473 0.85140 77.0 0.85927 0.85079 0.84647 0.84211 0.85230 0.84895 78.0 0.85685 0.84835 0.84403 0.83966 0.84985 0.84650 79.0 0.85422 0.84590 0.84158 0.83720 0.84740 0.84404 80.0 0.85197 0.84344 0.83911 0.83473 0.84494 0.84157 81.0 0.84950 0.84096 0.83664 0.83224 0.84245 0.83909 82.0 0.84702 0.83848 0.83415 0.82974 0.83997 0.83659 83.0 0.84453 0.83599 0.83164 0.82724 0.83747 0.83408 84.0 0.84203 0.83348 0.82913 0.82473 0.83496 0.83156 85.0 0.83951 0.83095 0.82660 0.82220 0.83242 0.82902 86.0 0.83697 0.82840 0.82405 0.81965 0.82987 0.82646 87.0 0.83441 0.82583 0.82148 0.81708 0.82729 0.82389 88.0 0.83181 0.82323 0.81888 0.81448 0.82469 0.82128 89.0 0.82919 0.82062 0.81626 0.81186 0.82207 0.81865 90.0 0.82654 0.81797 0.81362 0.80922 0.81942 0.81600 91.00 94.00 74.62 0.82386 0.81529 0.81094 0.80655 0.81674 0.81331 92.0 0.82114 0.81257 0.80823 0.80384 0.81401 0.81060 93.0 0.81839 0.80983 0.80549 0.80111 0.81127 0.80785 94.0 0.81561 0.80705 0.80272 0.79835 0.80848 0.80507 95.0 0.81278 0.80424 0.79991 0.79555 0.80567 0.80225 96.0 0.80991 0.80138 0.79706 0.79271 0.80280 0.79939 97.0 0.80698 0.79846 0.79415 0.78981 0.79988 0.79648 98.0 0.80399 0.79547 0.79117 0.78684 0.79688 0.79349 99.0 0.80094 0.79243 0.78814 0.78382 0.79383 0.79045 100.0 100.0 79.39 0.79784 0.78934 0.78506 0.78075 0.79074 0.78736 −114.3 Mass fraction, % Volume concentration, % Mass concentration, g/(100 ml) at 15.56 °C Density relative to 4 °C water Density at 20 °C relative to 20 °C water Density at 25 °C relative to 25 °C water Freezing temperature, °C 10 °C 20 °C 25 °C 30 °C
Boiling points of aqueous solutions Data obtained from CRC Handbook of Chemistry (Page 2117)
BP °C Weight % ethanol BP °C Weight % ethanol liquid vapor liquid vapor 78.1 95.5‡ 95.5‡ 78.2 91 92 86.5 18 71 78.4 85 89 87.0 17 70 78.6 82 88 87.5 16 69 78.8 80 87 88.0 15 68 79.0 78 86 88.5 13 67 79.2 76 85 89.0 12 65 79.4 74 85 89.5 11 63 79.6 72 84 90.0 10 61 79.8 69 84 90.5 10 59 80.0 67 83 91.0 9 57 80.2 64 83 91.5 8 55 80.4 62 82 92.0 8 53 80.6 59 82 92.5 7 51 80.8 56 81 93.0 6 49 81.0 53 81 93.5 6 46 81.2 50 80 94.0 5 44 81.4 47 80 94.5 5 42 81.6 45 80 95.0 4 39 81.8 43 79 95.5 4 36 82.0 41 79 96.0 3 33 82.5 36 78 96.5 3 30 83.0 33 78 97.0 2 27 83.5 30 77 97.5 2 23 84.0 27 77 98.0 1 19 84.5 25 75 98.5 1 15 85.0 23 74 99.0 < 1 10 85.5 21 73 99.5 < 1 5 86.0 20 72 100.0 0 0
‡Azeotropic mixture
Charts Thermophysical properties of mixtures of ethanol with water and dodecane Excess volume of the mixture of ethanol and water (volume contraction) Heat of mixing of the mixture of ethanol and waterVapor–liquid equilibrium of the mixture of ethanol and water (including azeotrope )Solid–liquid equilibrium of the mixture of ethanol and water (including eutecticum ) Miscibility gap in the mixture of dodecane and ethanol
Except where noted otherwise, data relate to Standard temperature and pressure . Reliability of data general note. Lange, Norbert Adolph (1967). John Aurie Dean (ed.). (10th ed.). McGraw-Hill. Linstrom, Peter J.; Mallard, William G. (eds.); , NIST Standard Reference Database Number 69 , National Institute of Standards and Technology, Gaithersburg (MD) 