METHANOL (DATA PAGE)

This page provides supplementary chemical data on methanol.

Contents

Material Safety Data Sheet

Structure and properties

Thermodynamic properties

Spectral data

Vapor pressure of liquid

Distillation data

References

External links

Material Safety Data Sheet

The handling of this chemical may incur notable safety precautions. It is highly recommend 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 J.T. Baker.

Structure and properties

Structure and properties
Index of refraction, ''n''D	1.328 at 20°C
Dielectric constant, εr	32.66 at 20°C
Bond strength	?
Bond length	?
Bond angle	?
Magnetic susceptibility[1]	5.3·10-7 (cgs units, volume)
Surface tension	22.5 dyn/cm at 20°C
Viscosity[2]	0.808 mPa·s at 0°C 0.690 mPa·s at 10°C 0.593 mPa·s at 20°C 0.449 mPa·s at 40°C 0.349 mPa·s at 60°C

Thermodynamic properties

Phase behavior
Triple point	175.5 K (−97.7 °C), ? Pa
Critical point	513 K (240 °C), 78.5 bar
Std enthalpy change of fusion, Δfus''H''o	? kJ/mol
Std entropy change of fusion, Δfus''S''o	? J/(mol·K)
Std enthalpy change of vaporization, Δvap''H''o	+37.4 kJ/mol
Std entropy change of vaporization, Δvap''S''o	? J/(mol·K)
Solid properties
Std enthalpy change of formation, Δf''H''osolid	? kJ/mol
Standard molar entropy, ''S''osolid	? J/(mol K)
Heat capacity, ''cp''	? J/(mol K)
Liquid properties
Std enthalpy change of formation, Δf''H''oliquid	−238.4 kJ/mol
Standard molar entropy, ''S''oliquid	127.2 J/(mol K)
Enthalpy of combustion Δc''H''o	–715.0 kJ/mol
Heat capacity, ''cp''	79.5 J/(mol K)
Gas properties
Std enthalpy change of formation, Δf''H''ogas	−201 kJ/mol
Standard molar entropy, ''S''ogas	239.9 J/(mol K)
Heat capacity,[3][4] ''cp''	52.29 J/(mol K) at 77°C 61.43 J/(mol K) at 100-223°C
Heat capacity ratio, ''γ'' = ''cp''/''cv''	1.203 at 77°C
van der Waals' constants[5]	a = 964.9 L2 kPa/mol2 b = 0.06702 liter per mole

Spectral data

UV-Vis
λmax	? nm
Extinction coefficient, ε	?
IR
Major absorption bands[6]	(liquid film) Wave number transmittance 3347 cm−1 6% 3336 cm−1 8% 2945 cm−1 18% 2833 cm−1 22% 2522 cm−1 77% 2046 cm−1 84% 1460 cm−1 47% 1116 cm−1 62% 1030 cm−1 4% 662 cm−1 58%
NMR
Proton NMR
Carbon-13 NMR
Other NMR data
MS
Masses of main fragments

Vapor pressure of liquid

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|-
| | 'P in mm Hg'
| 1 || 10 || 40 || 100 || 400 || 760 || 1520 || 3800 || 7600 || 15200 || 30400|| 45600
|-
| | 'T in °C'
| –44.0 || –16.2 || 5.0 || 21.2 || 49.9 || 64.7 || 84.0 || 112.5 || 138.0 || 167.8 || 203.5 || 224.0
|}

Table data obtained from ''CRC Handbook of Chemistry and Physics'' 44th ed.
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==Properties of aqueous methanol solutions==
Data obtained from ''Lange's Handbook of Chemistry'', 10th ed. and ''CRC Handbook of Chemistry and Physics'' 44th ed. The annotation, 'd a°C/b°C', indicates density of solution at temperature 'a' divided by density of pure water at temperature 'b'.
{| border="1" cellspacing="0" cellpadding="6" style="margin: 0 0 0 0.5em; background: ; border-collapse: collapse; border-color: ;"
|-
| '% wt
methanol' || '% vol
methanol' || 'd 15.6°C/4°C' || 'd 0°C/4°C' || 'd 10°C/4°C' || 'd 20°C/4°C' || 'freezing
temp °C'
|-
| 0 || 0 || 0.99908 || 0.99984|| 0.99970 || 0.99820 || 0.0
|-
| 1 || 1.25 || 0.99728 || 0.9981 || 0.9980 || 0.9965 ||
|-
| 2 || 2.50 || 0.99543 || 0.9963 || 0.9962 || 0.9943 ||
|-
| 3 || 3.75 || 0.99370 || 0.9946 || 0.9945 || 0.9931 ||
|-
| 3.9 || 5 || 0.9938 || || || || –2.2
|-
| 4 || 4.99 || 0.99198 || 0.9930 || 0.9929 || 0.9914 ||
|-
| 5 || 6.22 || 0.99029 || 0.9914 || 0.9912 || 0.9896 ||
|-
| 6 || 7.45 || 0.98864 || 0.9899 || 0.9896 || 0.9880 ||
|-
| 7 || 8.68 || 0.98701 || 0.9884 || 0.9881 || 0.9863 ||
|-
| 8 || 9.91 || 0.98547 || 0.9870 || 0.9865 || 0.9847 ||
|-
| 8.1 || 10 || 0.9872 || || || || –5.0
|-
| 9 || 11.13 || 0.98547 || 0.9856 || 0.9849 || 0.9831 ||
|-
| 10 || 12.35 || 0.98241 || 0.9842 || 0.9834 || 0.9815 ||
|-
| 11 || 13.56 || 0.98093 || 0.9829 || 0.9820 || 0.9799 ||
|-
| 12 || 14.77 || 0.97945 || 0.9816 || 0.9805 || 0.9784 ||
|-
| 12.2 || 15 || 0.9810 || || || || –8.3
|-
| 13 || 15.98 || 0.97802 || 0.9804 || 0.9791 || 0.9768 ||
|-
| 14 || 17.18 || 0.97660 || 0.9792 || 0.9778 || 0.9754 ||
|-
| 15 || 18.38 || 0.97518 || 0.9780 || 0.9764 || 0.9740 ||
|-
| 16 || 19.58 || 0.97377 || 0.9769 || 0.9751 || 0.9725 ||
|-
| 16.4 || 20 || 0.975 || || || || –11.7
|-
| 17 || 20.77 || 0.97237 || 0.9758 || 0.9739 || 0.9710 ||
|-
| 18 || 21.96 || 0.97096 || 0.9747 || 0.9726 || 0.9696 ||
|-
| 19 || 23.15 || 0.96955 || 0.9736 || 0.9713 || 0.9681 ||
|-
| 20 || 24.33 || 0.96814 || 0.9725 || 0.9700 || 0.9666 ||
|-
| 20.6 || 25 || 0.968 || || || || –15.6
|-
| 21 || 25.51 || 0.96673 || 0.9714 || 0.9687 || 0.9651 ||
|-
| 22 || 26.69 || 0.96533 || 0.9702 || 0.9673 || 0.9636 ||
|-
| 23 || 27.86 || 0.96392 || 0.9690 || 0.9660 || 0.9622 ||
|-
| 24 || 29.03 || 0.96251 || 0.9678 || 0.9646 || 0.9607 ||
|-
| 24.9 || 30 || 0.964 || || || || –20.0
|-
| 25 || 30.19 || 0.96108 || 0.9666 || 0.9632 || 0.9592 ||
|-
| 26 || 31.35 || 0.95963 || 0.9654 || 0.9628 || 0.9576 ||
|-
| 27 || 32.51 || 0.95817 || 0.9642 || 0.9604 || 0.9562 ||
|-
| 28 || 33.66 || 0.95668 || 0.9629 || 0.9590 || 0.9546 ||
|-
| 29 || 34.81 || 0.95518 || 0.9616 || 0.9575 || 0.9531 ||
|-
| 29.2 || 35 || 0.957 || || || || –25.0
|-
| 30 || 35.95 || 0.95366 || 0.9604 || 0.9560 || 0.9515 ||
|-
| 31 || 37.09 || 0.95213 || 0.9590 || 0.9546 || 0.9499 ||
|-
| 32 || 38.22 || 0.95056 || 0.9576 || 0.9531 || 0.9483 ||
|-
| 33 || 39.35 || 0.94896 || 0.9563 || 0.9516 || 0.9466 ||
|-
| 33.6 || 40 || 0.950 || || || || –30.0
|-
| 34 || 40.48 || 0.94734 || 0.9549 || 0.9500 || 0.9450 ||
|-
| 35 || 41.59 || 0.94570 || 0.9534 || 0.9484 || 0.9433 ||
|-
| 36 || 42.71 || 0.94404 || 0.9520 || 0.9469 || 0.9416 ||
|-
| 37 || 43.82 || 0.94237 || 0.9505 || 0.9453 || 0.9398 ||
|-
| 38 || 44.92 || 0.94067 || 0.9490 || 0.9437 || 0.9381 || –35.6
|-
| 39 || 46.02 || 0.93894 || 0.9475 || 0.9420 || 0.9363 ||
|-
| 40 || 47.11 || 0.93720 || 0.9459 || 0.9403 || 0.9345 ||
|-
| 41 || 48.20 || 0.93543 || 0.9443 || 0.9387 || 0.9327 ||
|-
| 42 || 49.28 || 0.93365 || 0.9427 || 0.9370 || 0.9309 ||
|-
| 43 || 50.35 || 0.93185 || 0.9411 || 0.9352 || 0.9290 ||
|-
| 44 || 51.42 || 0.93001 || 0.9395 || 0.9334 || 0.9272 ||
|-
| 45 || 52.49 || 0.92815 || 0.9377 || 0.9316 || 0.9252 ||
|-
| 46 || 53.54 || 0.92627 || 0.9360 || 0.9298 || 0.9234 ||
|-
| 47 || 54.60 || 0.92436 || 0.9342 || 0.9279 || 0.9214 ||
|-
| 48 || 55.64 || 0.92242 || 0.9324 || 0.9260 || 0.9196 ||
|-
| 49 || 56.68 || 0.92048 || 0.9306 || 0.9240 || 0.9176 ||
|-
| 50 || 57.71 || 0.91852 || 0.9287 || 0.9221 || 0.9156 ||
|-
| 51 || 58.74 || 0.91653 || 0.9269 || 0.9202 || 0.9135 ||
|-
| 52 || 59.76 || 0.91451 || 0.9250 || 0.9182 || 0.9114 ||
|-
| 53 || 60.77 || 0.91248 || 0.9230 || 0.9162 || 0.9094 ||
|-
| 54 || 61.78 || 0.91044 || 0.9211 || 0.9142 || 0.9073 ||
|-
| 55 || 62.78 || 0.90839 || 0.9191 || 0.9122 || 0.9052 ||
|-
| 56 || 63.78 || 0.90631 || 0.9172 || 0.9101 || 0.9032 ||
|-
| 57 || 64.77 || 0.90421 || 0.9151 || 0.9080 || 0.9010 ||
|-
| 58 || 65.75 || 0.90210 || 0.9131 || 0.9060 || 0.8988 ||
|-
| 59 || 66.73 || 0.89996 || 0.9111 || 0.9039 || 0.8968 ||
|-
| 60 || 67.69 || 0.89781 || 0.9090 || 0.9018 || 0.8946 ||
|-
| 61 || 68.65 || 0.89563 || 0.9068 || 0.8998 || 0.8924 ||
|-
| 62 || 69.61 || 0.89341 || 0.9046 || 0.8977 || 0.8902 ||
|-
| 63 || 70.55 || 0.89117 || 0.9024 || 0.8955 || 0.8879 ||
|-
| 64 || 71.49 || 0.88890 || 0.9002 || 0.8933 || 0.8856 ||
|-
| 65 || 72.42 || 0.88662 || 0.8980 || 0.8911 || 0.8834 ||
|-
| 66 || 73.34 || 0.88433 || 0.8958 || 0.8888 || 0.8811 ||
|-
| 67 || 74.26 || 0.88203 || 0.8935 || 0.8865 || 0.8787 ||
|-
| 68 || 75.17 || 0.87971 || 0.8913 || 0.8842 || 0.8763 ||
|-
| 69 || 76.08 || 0.87739 || 0.8891 || 0.8818 || 0.8738 ||
|-
| 70 || 76.98 || 0.87507 || 0.8869 || 0.8794 || 0.8715 ||
|-
| 71 || 77.86 || 0.87271 || 0.8847 || 0.8770 || 0.8690 ||
|-
| 72 || 78.75 || 0.87033 || 0.8824 || 0.8747 || 0.8665 ||
|-
| 73 || 79.62 || 0.86792 || 0.8801 || 0.8724 || 0.8641 ||
|-
| 74 || 80.48 || 0.86546 || 0.8778 || 0.8699 || 0.8616 ||
|-
| 75 || 81.34 || 0.86300 || 0.8754 || 0.8676 || 0.8592 ||
|-
| 76 || 82.18 || 0.86051 || 0.8729 || 0.8651 || 0.8567 ||
|-
| 77 || 83.02 || 0.85801 || 0.8705 || 0.8626 || 0.8542 ||
|-
| 78 || 83.86 || 0.85551 || 0.8680 || 0.8602 || 0.8518 ||
|-
| 79 || 84.68 || 0.85300 || 0.8657 || 0.8577 || 0.8494 ||
|-
| 80 || 85.50 || 0.85048 || 0.8634 || 0.8551 || 0.8469 ||
|-
| 81 || 86.31 || 0.84794 || 0.8610 || 0.8527 || 0.8446 ||
|-
| 82 || 87.11 || 0.84536 || 0.8585 || 0.8501 || 0.8420 ||
|-
| 83 || 87.90 || 0.84274 || 0.8560 || 0.8475 || 0.8394 ||
|-
| 84 || 88.68 || 0.84009 || 0.8535 || 0.8449 || 0.8366 ||
|-
| 85 || 89.45 || 0.83742 || 0.8510 || 0.8422 || 0.8340 ||
|-
| 86 || 90.21 || 0.83475 || 0.8483 || 0.8394 || 0.8314 ||
|-
| 87 || 90.97 || 0.83207 || 0.8456 || 0.8367 || 0.8286 ||
|-
| 88 || 91.72 || 0.82937 || 0.8428 || 0.8340 || 0.8258 ||
|-
| 89 || 92.46 || 0.82667 || 0.8400 || 0.8314 || 0.8230 ||
|-
| 90 || 93.19 || 0.82396 || 0.8374 || 0.8287 || 0.8202 ||
|-
| 91 || 93.92 || 0.82124 || 0.8347 || 0.8261 || 0.8174 ||
|-
| 92 || 94.63 || 0.81849 || 0.8320 || 0.8234 || 0.8146 ||
|-
| 93 || 95.33 || 0.81568 || 0.8293 || 0.8208 || 0.8118 ||
|-
| 94 || 96.02 || 0.81285 || 0.8266 || 0.8180 || 0.8090 ||
|-
| 95 || 96.70 || 0.80999 || 0.8240 || 0.8152 || 0.8062 ||
|-
| 96 || 97.37 || 0.80713 || 0.8212 || 0.8124 || 0.8034 ||
|-
| 97 || 98.04 || 0.80428 || 0.8186 || 0.8096 || 0.8005 ||
|-
| 98 || 98.70 || 0.80143 || 0.8158 || 0.8068 || 0.7976 ||
|-
| 99 || 99.35 || 0.79859 || 0.8130 || 0.8040 || 0.7948 ||
|-
| 100 || 100 || 0.79577 || 0.8102 || 0.8009 || 0.7917 || –97.8
|-
| '% wt
methanol' || '% vol
methanol' || 'd 15.6°C/4°C' || 'd 0°C/4°C' || 'd 10°C/4°C' || 'd 20°C/4°C' || 'freezing
temp °C'
|}

Distillation data

{|
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{| border="1" cellspacing="0" cellpadding="6" style="margin: 0 0 0 0.5em; background: ; border-collapse: collapse; border-color: ;"
|-
| bgcolor="#D0D0D0" align=center colspan="3" | 'Vapor-Liquid Equilibrium
of Methanol/Water'^[7]
''P'' = 760 mm Hg; ''T'' = 72.4°C - 100.0°C
|-
! rowspan="2" | BP
Temp.
°C
! colspan="2" | % by mole methanol
|-
! liquid !! vapor
|-
| 100.00 || 0.0 || 0.0
|-
| 99.25 || 0.5840 || 4.5705
|-
| 96.9 || 1.2 || 11.4
|-
| 95.7 || 2.6 || 15.7
|-
| 92.2 || 5.0 || 29.3
|-
| 90.15 || 7.38 || 36.65
|-
| 87.5 || 10.2 || 43.0
|-
| 86.50 || 11.76 || 48.55
|-
| 84.8 || 14.0 || 51.4
|-
| 84.3 || 15.0 || 52.2
|-
| 82.9 || 17.5 || 56.0
|-
| 81.5 || 20.0 || 59.0
|-
| 78.0 || 30.0 || 67.5
|-
| 75.4 || 40.0 || 73.5
|-
| 73.7 || 47.3 || 76.5
|-
| 72.6 || 52.6 || 79.4
|-
| 72.4 || 54.0 || 80.1
|-
|}
|    
|
{| border="1" cellspacing="0" cellpadding="6" style="margin: 0 0 0 0.5em; background: ; border-collapse: collapse; border-color: ;"
|-
| bgcolor="#D0D0D0" align=center colspan="3" | 'Vapor-Liquid Equilibrium
of Methanol/Water'
''P'' = 760 mm Hg; ''T'' = 64.6°C - 72.0°C
|-
! rowspan="2" | BP
Temp.
°C
! colspan="2" | % by mole methanol
|-
! liquid !! vapor
|-
| 72.0 || 56.5 || 80.5
|-
| 71.5 || 58.5 || 81.6
|-
| 71.4 || 60.0 || 83.1
|-
| 70.6 || 66.2 || 85.7
|-
| 69.9 || 67.5 || 86.5
|-
| 69.6 || 70.0 || 87.4
|-
| 69.1 || 71.4 || 87.8
|-
| 67.8 || 80.0 || 91.8
|-
| 66.9 || 85.0 || 93.0
|-
| 66.50 || 88.08 || 94.17
|-
| 66.2 || 89.0 || 95.6
|-
| 66.1 || 90.0 || 96.1
|-
| 65.7 || 92.0 || 96.5
|-
| 65.4 || 95.0 || 98.1
|-
| 64.95 || 96.57 || 95.69
|-
| 64.70 || 98.71 || 97.78
|-
| 64.6 || 100.0 || 100.0
|-
|}
|    
|
{| border="1" cellspacing="0" cellpadding="6" style="margin: 0 0 0 0.5em; background: ; border-collapse: collapse; border-color: ;"
|-
| bgcolor="#D0D0D0" align=center colspan="3" | 'Vapor-Liquid Equilibrium
of Methanol/Ethanol'
''P'' = 760 mm Hg
|-
! rowspan="2" | BP
Temp.
°C
! colspan="2" | % by mole methanol
|-
! liquid !! vapor
|-
| 78.3 || 0.0 || 0.0
|-
| 76.6 || 13.4 || 18.3
|-
| 75.0 || 24.2 || 32.6
|-
| 73.6 || 32.0 || 42.8
|-
| 72.3 || 40.1 || 52.9
|-
| 71.7 || 43.5 || 56.6
|-
| 70.0 || 54.2 || 67.6
|-
| 68.6 || 65.2 || 75.9
|-
| 67.7 || 72.8 || 81.3
|-
| 66.9 || 79.0 || 85.8
|-
| 66.6 || 81.4 || 87.5
|-
| 65.8 || 87.3 || 91.9
|-
| 65.6 || 91.0 || 93.7
|-
| 64.6 || 100.0 || 100.0
|-
|}
|}

References

1. http://nmr.chem.umn.edu/ResReports/NMR002.html
2. ''Lange's Handbook of Chemistry'', 10th ed. pp1669-1674
3. ''Lange's Handbook of Chemistry'' 10th ed, pp 1525-1528
4. ''CRC Handbook of Chemistry and Physics'' 44th ed. pp 2582-2584
5. ''Lange's Handbook of Chemistry'' 10th ed, pp 1522-1524
6. Spectral Database forOrganic Compounds
7. Binary Vapor-Liquid Equilibrium Data


★ (sample table of physical properties)

External links

★ Properties of pure Methanol
Except where noted otherwise, data relate to standard ambient temperature and pressure.
applies.