Chemical Properties of Cyclopentane, 1,1-dimethyl- (CAS 1638-26-2)

Cyclopentane, 1,1-dimethyl-

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InChI
InChI=1S/C7H14/c1-7(2)5-3-4-6-7/h3-6H2,1-2H3
InChI Key
QWHNJUXXYKPLQM-UHFFFAOYSA-N
Formula
C7H14
SMILES
CC1(C)CCCC1
Molecular Weight1
98.19
CAS
1638-26-2
Other Names
  • 1,1-Dimethylcyclopentane
  • GEM-DIMETHYLCYCLOPENTANE
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Physical Properties

Property Value Unit Source
ω 0.2730 KDB
AP 318.150 K KDB
Δcliquid -4583.30 ± 1.00 kJ/mol NIST
Δf 39.06 kJ/mol KDB
Δc,grossH 4583.32 kJ/mol KDB
Δc,netH 4275.253 kJ/mol KDB
Δfgas [-138.40; -138.30] kJ/mol Show Hide
Δfgas -138.40 kJ/mol KDB
Δfgas -138.30 ± 1.20 kJ/mol NIST
Δfliquid -172.10 ± 1.10 kJ/mol NIST
Δfus 1.52 kJ/mol Joback Calculated Property
Δvap [33.80; 33.80] kJ/mol Show Hide
Δvap 33.80 kJ/mol NIST
Δvap 33.80 kJ/mol NIST
IE 9.46 ± 0.05 eV NIST
log10WS -2.41 Crippen Calculated Property
logPoct/wat 2.587 Crippen Calculated Property
McVol 98.630 ml/mol McGowan Calculated Property
Pc 3440.00 kPa KDB
Inp [662.30; 684.00]   Show Hide
Inp 665.00 NIST
Inp 675.50 NIST
Inp 669.00 NIST
Inp 675.90 NIST
Inp 676.00 NIST
Inp 676.80 NIST
Inp 676.10 NIST
Inp 675.80 NIST
Inp 673.30 NIST
Inp 677.40 NIST
Inp 671.00 NIST
Inp 675.00 NIST
Inp 679.00 NIST
Inp 672.40 NIST
Inp 676.50 NIST
Inp 675.00 NIST
Inp 676.00 NIST
Inp 677.00 NIST
Inp 671.70 NIST
Inp 673.60 NIST
Inp 675.40 NIST
Inp 676.90 NIST
Inp 669.00 NIST
Inp 671.00 NIST
Inp 673.00 NIST
Inp 675.00 NIST
Inp 677.00 NIST
Inp 679.00 NIST
Inp 675.90 NIST
Inp 676.10 NIST
Inp 674.00 NIST
Inp 674.00 NIST
Inp 674.00 NIST
Inp 673.20 NIST
Inp 673.20 NIST
Inp Outlier 684.00 NIST
Inp 675.00 NIST
Inp 679.00 NIST
Inp 674.00 NIST
Inp 677.00 NIST
Inp 672.00 NIST
Inp 674.00 NIST
Inp 675.00 NIST
Inp 677.00 NIST
Inp 680.00 NIST
Inp 674.00 NIST
Inp 672.00 NIST
Inp Outlier 683.00 NIST
Inp 669.00 NIST
Inp 674.00 NIST
Inp 677.00 NIST
Inp 681.00 NIST
Inp 677.00 NIST
Inp 679.00 NIST
Inp 671.10 NIST
Inp 669.70 NIST
Inp Outlier 662.30 NIST
Inp Outlier 663.04 NIST
Inp 668.50 NIST
Inp 665.52 NIST
Inp 665.59 NIST
Inp 665.48 NIST
Inp 665.63 NIST
Inp 666.00 NIST
Inp 672.00 NIST
Inp 673.00 NIST
Inp 677.00 NIST
Inp 671.00 NIST
Inp 672.00 NIST
Inp 666.00 NIST
Inp 670.00 NIST
Inp 673.00 NIST
Inp 669.00 NIST
Inp 669.00 NIST
Inp Outlier 683.00 NIST
Inp 673.00 NIST
Inp 665.00 NIST
Inp 675.00 NIST
Inp 679.00 NIST
Inp 669.70 NIST
Inp 665.59 NIST
Inp 669.00 NIST
Inp 665.00 NIST
Inp 676.80 NIST
Inp 671.00 NIST
Inp 675.00 NIST
Inp 675.40 NIST
Inp 674.00 NIST
Inp Outlier 684.00 NIST
Inp 672.00 NIST
Inp 677.00 NIST
gas 359.28 J/mol×K NIST
liquid 265.01 J/mol×K NIST
Tboil [360.00; 361.35] K Show Hide
Tboil 361.00 K KDB
Tboil 360.70 K NIST
Tboil 361.00 ± 0.20 K NIST
Tboil 361.05 ± 0.30 K NIST
Tboil 360.99 ± 0.02 K NIST
Tboil 361.35 ± 0.30 K NIST
Tboil 360.65 ± 0.20 K NIST
Tboil 361.20 ± 0.30 K NIST
Tboil 360.65 ± 0.50 K NIST
Tboil 360.70 ± 0.30 K NIST
Tboil 361.30 ± 0.60 K NIST
Tboil Outlier 360.00 ± 1.00 K NIST
Tc 547.00 K KDB
Tfus [196.00; 203.42] K Show Hide
Tfus 203.40 K KDB
Tfus 203.27 ± 0.20 K NIST
Tfus 203.24 ± 0.20 K NIST
Tfus 203.42 ± 0.06 K NIST
Tfus 203.34 ± 0.08 K NIST
Tfus 203.34 ± 0.07 K NIST
Tfus 203.35 ± 0.05 K NIST
Tfus 203.24 ± 0.30 K NIST
Tfus 203.24 ± 0.30 K NIST
Tfus 203.42 ± 0.10 K NIST
Tfus 197.28 ± 4.00 K NIST
Tfus 203.16 ± 1.00 K NIST
Tfus 196.75 ± 0.40 K NIST
Tfus 196.75 ± 5.00 K NIST
Tfus 196.00 ± 5.00 K NIST
Ttriple [203.67; 203.68] K Show Hide
Ttriple 203.68 ± 0.05 K NIST
Ttriple 203.67 ± 0.02 K NIST
Ttriple 203.67 ± 0.03 K NIST
Ttriple 203.67 ± 0.02 K NIST
Vc 0.360 m3/kmol KDB
Zc 0.2722930 KDB
Zra 0.28 KDB

Temperature Dependent Properties

Property Value Unit Temperature (K) Source
Cp,gas [174.34; 256.90] J/mol×K [375.08; 578.27] Show Hide
Cp,gas 174.34 J/mol×K 375.08 Joback Calculated Property
Cp,gas 190.73 J/mol×K 408.95 Joback Calculated Property
Cp,gas 205.94 J/mol×K 442.81 Joback Calculated Property
Cp,gas 220.07 J/mol×K 476.68 Joback Calculated Property
Cp,gas 233.21 J/mol×K 510.54 Joback Calculated Property
Cp,gas 245.45 J/mol×K 544.41 Joback Calculated Property
Cp,gas 256.90 J/mol×K 578.27 Joback Calculated Property
Cp,liquid 187.36 J/mol×K 299.81 NIST
ΔfusH [1.09; 6.49] kJ/mol [146.80; 203.70] Show Hide
ΔfusH 6.49 kJ/mol 146.80 NIST
ΔfusH 1.09 kJ/mol 203.70 NIST
ΔfusH 1.09 kJ/mol 203.70 NIST
ΔvapH [30.29; 34.00] kJ/mol [323.50; 361.00] Show Hide
ΔvapH 34.00 kJ/mol 323.50 NIST
ΔvapH 33.80 kJ/mol 325.50 NIST
ΔvapH 30.29 kJ/mol 361.00 KDB
n0 1.41091 298.15 KDB
ρl 759.00 kg/m3 289.00 KDB
ΔfusS [5.34; 44.18] J/mol×K [146.80; 203.70] Show Hide
ΔfusS 44.18 J/mol×K 146.80 NIST
ΔfusS 5.34 J/mol×K 203.70 NIST
γ 0.02 N/m 293.20 KDB

Correlations

Property Value Unit Temperature (K) Source
Pvap [1.33; 202.64] kPa [261.51; 385.78] The Yaw... Show Hide
Equationln(Pvp) = A + B/(T + C)
Coefficient A1.42167e+01
Coefficient B-3.06828e+03
Coefficient C-4.12340e+01
Temperature range, min.261.51
Temperature range, max.385.78
Pvap 1.33 kPa 261.51 Calculated Property
Pvap 3.03 kPa 275.32 Calculated Property
Pvap 6.29 kPa 289.13 Calculated Property
Pvap 12.09 kPa 302.93 Calculated Property
Pvap 21.76 kPa 316.74 Calculated Property
Pvap 37.02 kPa 330.55 Calculated Property
Pvap 60.01 kPa 344.36 Calculated Property
Pvap 93.27 kPa 358.16 Calculated Property
Pvap 139.72 kPa 371.97 Calculated Property
Pvap 202.64 kPa 385.78 Calculated Property
Pvap [9.19e-03; 3463.34] kPa [203.36; 547.00] KDB Vap... Show Hide
Equationln(Pvp) = A + B/T + C*ln(T) + D*T^2
Coefficient A8.87017e+01
Coefficient B-6.92875e+03
Coefficient C-1.12381e+01
Coefficient D9.90988e-06
Temperature range, min.203.36
Temperature range, max.547.00
Pvap 9.19e-03 kPa 203.36 Calculated Property
Pvap 0.34 kPa 241.54 Calculated Property
Pvap 4.03 kPa 279.72 Calculated Property
Pvap 23.50 kPa 317.91 Calculated Property
Pvap 87.75 kPa 356.09 Calculated Property
Pvap 244.22 kPa 394.27 Calculated Property
Pvap 557.63 kPa 432.45 Calculated Property
Pvap 1112.54 kPa 470.64 Calculated Property
Pvap 2024.61 kPa 508.82 Calculated Property
Pvap 3463.34 kPa 547.00 Calculated Property

Similar Compounds

Cyclopentane, 1-ethyl-1-methyl-. Cyclopentane, 1-butyl-1-methyl. Cyclopentane, 1-methyl-1-propyl-. Cyclopentane, 1,1,3,3-tetramethyl-. Cyclopentane, 1-methyl-1-pentyl. Cyclohexane, 1,1-dimethyl-. Cyclooctane, 1,1-dimethyl. 1,1,10,10-Tetramethylcyclooctadecane. Cyclododecane, 1,1,4,4-tetramethyl-. Cycloheptane, 1,1-dimethyl. 1,1,4,4,10,10,13,13-Octamethyl-cyclooctadecane. Hexane, 2,2-dimethyl-. 1,1,2,2-tetramethylcyclopentane. Hexane, 3,3-dimethyl-. Hexane, 3-ethyl-3-methyl-.

Find more compounds similar to Cyclopentane, 1,1-dimethyl-.

Sources

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Outlier This icon means that the value is more than 2 standard deviations away from the property mean.