Chemical Properties of Methylal (CAS 109-87-5)

Methylal

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InChI
InChI=1S/C3H8O2/c1-4-3-5-2/h3H2,1-2H3
InChI Key
NKDDWNXOKDWJAK-UHFFFAOYSA-N
Formula
C3H8O2
SMILES
COCOC
Molecular Weight1
76.09
CAS
109-87-5
Other Names
  • (CH3O)2CH2
  • 2,4-Dioxapentane
  • Anesthenyl
  • Bis(methoxy)methane
  • Dimethoxymethane
  • Dimethyl formal
  • Dimethylacetal formaldehyde
  • Formal
  • Formaldehyde dimethyl acetal
  • Formaldehyde methyl ketal
  • Methane, dimethoxy-
  • Methoxymethyl methyl ether
  • Methylene dimethyl ether
  • Methylene glycol dimethylether
  • Methylenedioxydimethane
  • Metylal
  • UN 1234
  • formaldehyde, dimethyl acetal
  • methanal, dimethyl acetal
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Physical Properties

Property Value Unit Source
Δcgas -1975.70 ± 0.75 kJ/mol NIST
Δf -235.62 kJ/mol Joback Calculated Property
Δfgas -348.20 ± 0.79 kJ/mol NIST
Δfus 5.90 kJ/mol Joback Calculated Property
Δvap [28.89; 29.60] kJ/mol Show Hide
Δvap 29.60 kJ/mol NIST
Δvap 28.89 ± 0.21 kJ/mol NIST
IE [9.70; 10.42] eV Show Hide
IE 9.70 eV NIST
IE 10.00 ± 0.05 eV NIST
IE 10.42 eV NIST
IE 10.20 eV NIST
IE 10.29 eV NIST
log10WS [0.48; 0.48]   Show Hide
log10WS 0.48 Aq. Sol...
log10WS 0.48 Estimat...
logPoct/wat 0.237 Crippen Calculated Property
McVol 64.870 ml/mol McGowan Calculated Property
Pc 3950.00 ± 70.92 kPa NIST
ρc 356.88 ± 29.68 kg/m3 NIST
Inp [500.00; 511.00]   Show Hide
Inp 500.00 NIST
Inp 511.00 NIST
Inp 508.00 NIST
Inp 508.00 NIST
Inp 505.00 NIST
Inp 505.00 NIST
I 740.00 NIST
gas 335.72 ± 0.62 J/mol×K NIST
liquid 244.01 J/mol×K NIST
Tboil 315.25 K Vapor-L...
Tc [480.60; 496.80] K Show Hide
Tc 480.60 ± 1.00 K NIST
Tc 488.40 ± 6.00 K NIST
Tc 496.80 ± 10.00 K NIST
Tfus [168.00; 168.35] K Show Hide
Tfus 168.20 K Aq. Sol...
Tfus 168.00 ± 2.00 K NIST
Tfus 168.35 ± 0.50 K NIST
Tfus 168.15 ± 0.40 K NIST
Tfus 168.35 ± 0.30 K NIST
Ttriple [168.01; 168.03] K Show Hide
Ttriple 168.03 ± 0.05 K NIST
Ttriple 168.01 ± 0.02 K NIST
Vc 0.239 m3/kmol Joback Calculated Property

Temperature Dependent Properties

Property Value Unit Temperature (K) Source
Cp,gas [107.46; 138.28] J/mol×K [312.88; 477.41] Show Hide
Cp,gas 107.46 J/mol×K 312.88 Joback Calculated Property
Cp,gas 112.65 J/mol×K 340.30 Joback Calculated Property
Cp,gas 117.83 J/mol×K 367.72 Joback Calculated Property
Cp,gas 123.00 J/mol×K 395.15 Joback Calculated Property
Cp,gas 128.13 J/mol×K 422.57 Joback Calculated Property
Cp,gas 133.23 J/mol×K 449.99 Joback Calculated Property
Cp,gas 138.28 J/mol×K 477.41 Joback Calculated Property
Cp,liquid [161.42; 163.60] J/mol×K [298.00; 298.15] Show Hide
Cp,liquid 163.60 J/mol×K 298.00 NIST
Cp,liquid 161.42 J/mol×K 298.15 NIST
η [0.0001420; 0.0012631] Pa×s [218.09; 383.16] Show Hide
η 0.0012630 Pa×s 218.09 Density...
η 0.0012631 Pa×s 218.09 Density...
η 0.0010987 Pa×s 223.09 Density...
η 0.0010987 Pa×s 223.09 Density...
η 0.0009649 Pa×s 228.10 Density...
η 0.0009648 Pa×s 228.11 Density...
η 0.0008557 Pa×s 233.10 Density...
η 0.0008556 Pa×s 233.10 Density...
η 0.0007648 Pa×s 238.11 Density...
η 0.0007648 Pa×s 238.11 Density...
η 0.0006886 Pa×s 243.14 Density...
η 0.0006885 Pa×s 243.15 Density...
η 0.0006248 Pa×s 248.14 Density...
η 0.0006248 Pa×s 248.14 Density...
η 0.0005705 Pa×s 253.13 Density...
η 0.0005705 Pa×s 253.14 Density...
η 0.0005240 Pa×s 258.12 Density...
η 0.0005238 Pa×s 258.15 Density...
η 0.0004841 Pa×s 263.07 Density...
η 0.0004839 Pa×s 263.09 Density...
η 0.0004489 Pa×s 268.09 Density...
η 0.0004489 Pa×s 268.09 Density...
η 0.0004183 Pa×s 273.05 Density...
η 0.0004183 Pa×s 273.05 Density...
η 0.0003912 Pa×s 278.05 Density...
η 0.0003912 Pa×s 278.05 Density...
η 0.0003669 Pa×s 283.10 Density...
η 0.0003669 Pa×s 283.10 Density...
η 0.0003452 Pa×s 288.17 Density...
η 0.0003451 Pa×s 288.17 Density...
η 0.0003262 Pa×s 293.09 Density...
η 0.0003262 Pa×s 293.09 Density...
η 0.0003086 Pa×s 298.12 Density...
η 0.0003086 Pa×s 298.13 Density...
η 0.0002927 Pa×s 303.12 Density...
η 0.0002927 Pa×s 303.13 Density...
η 0.0002781 Pa×s 308.16 Density...
η 0.0002781 Pa×s 308.17 Density...
η 0.0002647 Pa×s 313.16 Density...
η 0.0002647 Pa×s 313.16 Density...
η 0.0002524 Pa×s 318.16 Density...
η 0.0002524 Pa×s 318.17 Density...
η 0.0002410 Pa×s 323.15 Density...
η 0.0002409 Pa×s 323.15 Density...
η 0.0002303 Pa×s 328.14 Density...
η 0.0002303 Pa×s 328.14 Density...
η 0.0002202 Pa×s 333.14 Density...
η 0.0002202 Pa×s 333.15 Density...
η 0.0002107 Pa×s 338.15 Density...
η 0.0002107 Pa×s 338.15 Density...
η 0.0002017 Pa×s 343.15 Density...
η 0.0002017 Pa×s 343.15 Density...
η 0.0001931 Pa×s 348.16 Density...
η 0.0001931 Pa×s 348.16 Density...
η 0.0001850 Pa×s 353.12 Density...
η 0.0001850 Pa×s 353.13 Density...
η 0.0001771 Pa×s 358.16 Density...
η 0.0001771 Pa×s 358.16 Density...
η 0.0001696 Pa×s 363.15 Density...
η 0.0001696 Pa×s 363.15 Density...
η 0.0001624 Pa×s 368.14 Density...
η 0.0001623 Pa×s 368.16 Density...
η 0.0001554 Pa×s 373.14 Density...
η 0.0001554 Pa×s 373.14 Density...
η 0.0001486 Pa×s 378.15 Density...
η 0.0001486 Pa×s 378.15 Density...
η 0.0001420 Pa×s 383.15 Density...
η 0.0001420 Pa×s 383.16 Density...
ΔfusH [8.33; 8.33] kJ/mol [168.00; 168.01] Show Hide
ΔfusH 8.33 kJ/mol 168.00 NIST
ΔfusH 8.33 kJ/mol 168.00 NIST
ΔfusH 8.33 kJ/mol 168.01 NIST
ΔvapH [28.89; 31.20] kJ/mol [290.50; 305.00] Show Hide
ΔvapH 30.10 kJ/mol 290.50 NIST
ΔvapH 31.20 kJ/mol 294.50 NIST
ΔvapH 29.80 kJ/mol 295.50 NIST
ΔvapH 28.89 kJ/mol 298.15 NIST
ΔvapH 30.30 kJ/mol 305.00 NIST
Pvap [27.73; 935.48] kPa [283.13; 398.15] Show Hide
Pvap 27.73 kPa 283.13 Vapor P...
Pvap 30.39 kPa 285.13 Vapor P...
Pvap 34.73 kPa 288.11 Vapor P...
Pvap 43.08 kPa 293.07 Vapor P...
Pvap 46.83 kPa 295.07 Vapor P...
Pvap 52.94 kPa 298.07 Vapor P...
Pvap 57.14 kPa 300.07 Vapor P...
Pvap 64.26 kPa 303.05 Vapor P...
Pvap 69.42 kPa 305.05 Vapor P...
Pvap 77.74 kPa 308.05 Vapor P...
Pvap 83.80 kPa 310.07 Vapor P...
Pvap 93.85 kPa 313.16 Vapor P...
Pvap 111.95 kPa 318.13 Vapor P...
Pvap 132.98 kPa 323.17 Vapor P...
Pvap 142.06 kPa 325.18 Vapor P...
Pvap 156.44 kPa 328.17 Vapor P...
Pvap 166.67 kPa 330.17 Vapor P...
Pvap 182.96 kPa 333.17 Vapor P...
Pvap 194.47 kPa 335.17 Vapor P...
Pvap 212.79 kPa 338.16 Vapor P...
Pvap 225.73 kPa 340.16 Vapor P...
Pvap 246.24 kPa 343.16 Vapor P...
Pvap 260.68 kPa 345.16 Vapor P...
Pvap 283.65 kPa 348.16 Vapor P...
Pvap 325.16 kPa 353.16 Vapor P...
Pvap 371.53 kPa 358.16 Vapor P...
Pvap 421.82 kPa 363.16 Vapor P...
Pvap 477.61 kPa 368.16 Vapor P...
Pvap 538.51 kPa 373.15 Vapor P...
Pvap 605.33 kPa 378.16 Vapor P...
Pvap 677.68 kPa 383.13 Vapor P...
Pvap 757.05 kPa 388.15 Vapor P...
Pvap 842.82 kPa 393.16 Vapor P...
Pvap 935.48 kPa 398.15 Vapor P...
ρl [847.51; 848.59] kg/m3 [298.15; 303.15] Show Hide
ρl 847.51 kg/m3 298.15 Phase e...
ρl 847.51 kg/m3 298.15 Vapor-L...
ρl 848.59 kg/m3 303.15 Isobari...
ΔfusS 49.59 J/mol×K 168.01 NIST
γ [0.01; 0.03] N/m [238.07; 388.14] Show Hide
γ 0.03 N/m 238.07 Surface...
γ 0.03 N/m 243.12 Surface...
γ 0.03 N/m 248.13 Surface...
γ 0.03 N/m 253.12 Surface...
γ 0.03 N/m 258.12 Surface...
γ 0.02 N/m 263.08 Surface...
γ 0.02 N/m 268.09 Surface...
γ 0.02 N/m 273.09 Surface...
γ 0.02 N/m 278.08 Surface...
γ 0.02 N/m 283.07 Surface...
γ 0.02 N/m 288.08 Surface...
γ 0.02 N/m 293.05 Surface...
γ 0.02 N/m 298.04 Surface...
γ 0.02 N/m 303.16 Surface...
γ 0.02 N/m 308.15 Surface...
γ 0.02 N/m 313.16 Surface...
γ 0.02 N/m 318.16 Surface...
γ 0.02 N/m 323.15 Surface...
γ 0.02 N/m 328.13 Surface...
γ 0.02 N/m 333.16 Surface...
γ 0.02 N/m 338.16 Surface...
γ 0.01 N/m 343.15 Surface...
γ 0.01 N/m 348.14 Surface...
γ 0.01 N/m 353.15 Surface...
γ 0.01 N/m 358.15 Surface...
γ 0.01 N/m 363.15 Surface...
γ 0.01 N/m 368.15 Surface...
γ 0.01 N/m 373.15 Surface...
γ 0.01 N/m 378.15 Surface...
γ 0.01 N/m 383.13 Surface...
γ 0.01 N/m 388.14 Surface...
ΔvapS 96.90 J/mol×K 298.15 NIST

Datasets

Viscosity, Pa*s

Fixed Measured
Temperature, K - Liquid Pressure, kPa - Liquid Viscosity, Pa*s - Liquid
243.15 100.00 0.0006
243.15 4400.00 0.0007
243.15 9420.00 0.0007
243.15 14450.00 0.0007
243.15 19440.00 0.0007
253.15 100.00 0.0005
253.15 4420.00 0.0006
253.15 9410.00 0.0006
253.15 14450.00 0.0006
253.15 19440.00 0.0006
263.15 100.00 0.0005
263.15 4440.00 0.0005
263.15 9440.00 0.0005
263.15 14470.00 0.0005
263.15 19470.00 0.0005
273.15 100.00 0.0004
273.15 4440.00 0.0004
273.15 9440.00 0.0004
273.15 14480.00 0.0005
273.15 19540.00 0.0005
283.15 100.00 0.0004
283.15 4450.00 0.0004
283.15 9430.00 0.0004
283.15 14490.00 0.0004
283.15 19550.00 0.0004
293.15 100.00 0.0003
293.15 4410.00 0.0003
293.15 9460.00 0.0004
293.15 14490.00 0.0004
293.15 19550.00 0.0004
303.15 100.00 0.0003
303.15 4450.00 0.0003
303.15 9450.00 0.0003
303.15 14490.00 0.0003
303.15 19550.00 0.0003
313.15 160.00 0.0003
313.15 4440.00 0.0003
313.15 9420.00 0.0003
313.15 14450.00 0.0003
313.15 19440.00 0.0003
323.15 190.00 0.0002
323.15 4390.00 0.0003
323.15 9420.00 0.0003
323.15 14460.00 0.0003
323.15 19490.00 0.0003
333.15 210.00 0.0002
333.15 4390.00 0.0002
333.15 9410.00 0.0002
333.15 14450.00 0.0003
333.15 19450.00 0.0003
343.15 280.00 0.0002
343.15 4430.00 0.0002
343.15 9430.00 0.0002
343.15 14460.00 0.0002
343.15 19460.00 0.0002
353.15 360.00 0.0002
353.15 4370.00 0.0002
353.15 9400.00 0.0002
353.15 14450.00 0.0002
353.15 19430.00 0.0002
363.15 430.00 0.0002
363.15 4400.00 0.0002
363.15 9410.00 0.0002
363.15 14450.00 0.0002
363.15 19460.00 0.0002
373.15 550.00 0.0002
373.15 4370.00 0.0002
373.15 9400.00 0.0002
373.15 14450.00 0.0002
373.15 19480.00 0.0002
Reference

Correlations

Property Value Unit Temperature (K) Source
Pvap [1.93e-03; 3888.46] kPa [168.35; 480.60] KDB Vap... Show Hide
Equationln(Pvp) = A + B/T + C*ln(T) + D*T^2
Coefficient A6.23348e+01
Coefficient B-5.39408e+03
Coefficient C-7.16190e+00
Coefficient D5.97290e-06
Temperature range, min.168.35
Temperature range, max.480.60
Pvap 1.93e-03 kPa 168.35 Calculated Property
Pvap 0.13 kPa 203.04 Calculated Property
Pvap 2.22 kPa 237.74 Calculated Property
Pvap 16.76 kPa 272.43 Calculated Property
Pvap 74.97 kPa 307.13 Calculated Property
Pvap 236.92 kPa 341.82 Calculated Property
Pvap 588.93 kPa 376.52 Calculated Property
Pvap 1235.20 kPa 411.21 Calculated Property
Pvap 2291.87 kPa 445.91 Calculated Property
Pvap 3888.46 kPa 480.60 Calculated Property

Similar Compounds

1,3,5-Trioxane. Methane, trimethoxy-. 1,3,5,7-Tetroxane. (CH3O)2CS. Carbonic acid, dimethyl ester. Tetramethyl orthocarbonate. (CD3)2O. Methyl radical, methoxy-. Dimethyl ether. Propynal, dimethylacetal. Ethane, 1,1-dimethoxy-. 1,1-Dimethoxyethane. 1,2,4-Trioxolane. Methane, diethoxy-. Methane, chloromethoxy-.

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Mixtures

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Sources

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