Chemical Properties of Cyclotetrasiloxane, octamethyl- (CAS 556-67-2)

Cyclotetrasiloxane, octamethyl-

PDF Excel Molecule Calculator
InChI
InChI=1S/C8H24O4Si4/c1-13(2)9-14(3,4)11-16(7,8)12-15(5,6)10-13/h1-8H3
InChI Key
HMMGMWAXVFQUOA-UHFFFAOYSA-N
Formula
C8H24O4Si4
SMILES
C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1
Molecular Weight1
296.62
CAS
556-67-2
Other Names
  • CO9810
  • Cyclotetrasilane, octamethyl
  • D4 (octamethylcyclotetrasiloxane)
  • NUC Silicone VS 7207
  • O9810
  • Octamethylcyclotetrasiloxane
  • Octamethyltetrasiloxane
  • Oktamethylcyklotetrasiloxan
Cheméo is a service of Céondo GmbH, since 2007, we provide simulation, modelling and software development services for the industry. Do not hesitate to contact us for your projects.

Contents

  1. Physical Properties
  2. Temperature Dependent Properties
  3. Datasets
  4. Correlations
  5. Similar Compounds
  6. Mixtures
  7. Sources

Physical Properties

Property Value Unit Source
Δvap [56.10; 57.00] kJ/mol Show Hide
Δvap 57.00 ± 0.80 kJ/mol NIST
Δvap 56.10 kJ/mol NIST
log10WS 6.05 Crippen Calculated Property
logPoct/wat 2.874 Crippen Calculated Property
Pc [1320.00; 1339.59] kPa Show Hide
Pc 1320.00 ± 20.00 kPa NIST
Pc 1339.59 ± 6.86 kPa NIST
ρc 295.13 ± 2.94 kg/m3 NIST
Inp [994.00; 1022.00]   Show Hide
Inp 1004.00 NIST
Inp 994.00 NIST
Inp 1022.00 NIST
Inp 1010.00 NIST
Inp 1010.00 NIST
Inp 1011.00 NIST
Inp 1013.00 NIST
Inp 1017.00 NIST
Inp 1017.00 NIST
Inp 1000.00 NIST
Inp 1004.00 NIST
Tboil [446.20; 448.50] K Show Hide
Tboil 448.50 ± 0.50 K NIST
Tboil 446.20 ± 0.60 K NIST
Tc [585.70; 586.50] K Show Hide
Tc 585.70 ± 0.30 K NIST
Tc 586.50 ± 0.20 K NIST
Tfus [287.40; 290.65] K Show Hide
Tfus 290.00 ± 0.10 K NIST
Tfus 290.65 ± 0.20 K NIST
Tfus 287.40 ± 0.10 K NIST
Ttriple [23.76; 290.25] K Show Hide
Ttriple 290.25 ± 0.02 K NIST
Ttriple 23.76 ± 0.04 K NIST
Vc [0.984; 1.005] m3/kmol Show Hide
Vc 1.005 ± 0.001 m3/kmol NIST
Vc 0.984 ± 0.003 m3/kmol NIST
Vm 3.12e-04 m3/mol Thermod...

Temperature Dependent Properties

Property Value Unit Temperature (K) Source
Cp,liquid [511.50; 568.40] J/mol×K [293.15; 425.95] Show Hide
Cp,liquid 511.50 J/mol×K 293.15 Selecte...
Cp,liquid 513.60 J/mol×K 298.00 Selecte...
Cp,liquid 515.80 J/mol×K 303.15 Selecte...
Cp,liquid 517.20 J/mol×K 306.25 Selecte...
Cp,liquid 520.10 J/mol×K 313.12 Selecte...
Cp,liquid 522.70 J/mol×K 319.00 Selecte...
Cp,liquid 524.50 J/mol×K 323.25 Selecte...
Cp,liquid 526.40 J/mol×K 327.55 Selecte...
Cp,liquid 529.10 J/mol×K 334.75 Selecte...
Cp,liquid 530.80 J/mol×K 337.88 Selecte...
Cp,liquid 532.70 J/mol×K 342.23 Selecte...
Cp,liquid 535.20 J/mol×K 348.05 Selecte...
Cp,liquid 538.80 J/mol×K 352.20 Selecte...
Cp,liquid 539.90 J/mol×K 358.83 Selecte...
Cp,liquid 542.20 J/mol×K 364.28 Selecte...
Cp,liquid 543.00 J/mol×K 370.25 Selecte...
Cp,liquid 548.00 J/mol×K 377.55 Selecte...
Cp,liquid 550.10 J/mol×K 382.48 Selecte...
Cp,liquid 552.30 J/mol×K 388.65 Selecte...
Cp,liquid 554.70 J/mol×K 393.15 Selecte...
Cp,liquid 557.70 J/mol×K 399.83 Selecte...
Cp,liquid 560.80 J/mol×K 407.15 Selecte...
Cp,liquid 564.50 J/mol×K 415.73 Selecte...
Cp,liquid 568.40 J/mol×K 425.95 Selecte...
ΔfusH 23.77 kJ/mol 290.50 NIST
ΔvapH [44.10; 48.50] kJ/mol [365.50; 415.00] Show Hide
ΔvapH 48.50 kJ/mol 365.50 NIST
ΔvapH 45.60 kJ/mol 365.50 NIST
ΔvapH 44.10 kJ/mol 378.50 NIST
ΔvapH 47.60 kJ/mol 415.00 NIST
Pvap [0.24; 5.11] kPa [308.15; 368.15] Show Hide
Pvap 0.24 kPa 308.15 Tempera...
Pvap 0.43 kPa 318.15 Tempera...
Pvap 0.75 kPa 328.15 Tempera...
Pvap 1.26 kPa 338.15 Tempera...
Pvap 2.06 kPa 348.15 Tempera...
Pvap 3.29 kPa 358.15 Tempera...
Pvap 5.11 kPa 368.15 Tempera...
ρl [915.80; 956.03] kg/m3 [293.15; 328.15] Show Hide
ρl 956.03 kg/m3 293.15 The mix...
ρl 938.83 kg/m3 308.15 The mix...
ρl 938.88 kg/m3 308.15 Volumet...
ρl 933.13 kg/m3 313.15 The mix...
ρl 933.06 kg/m3 313.15 Volumet...
ρl 927.38 kg/m3 318.15 The mix...
ρl 927.34 kg/m3 318.15 Volumet...
ρl 921.62 kg/m3 323.15 The mix...
ρl 921.59 kg/m3 323.15 Volumet...
ρl 915.91 kg/m3 328.15 The mix...
ρl 915.80 kg/m3 328.15 Volumet...

Datasets

Speed of sound, m/s

Fixed Measured
Temperature, K - Fluid (supercritical or subcritical phases) Pressure, kPa - Fluid (supercritical or subcritical phases) Speed of sound, m/s - Fluid (supercritical or subcritical phases)
450.00 38.90 110.351
450.00 46.70 109.656
450.00 57.41 108.801
450.00 62.89 108.299
450.00 69.33 107.727
465.00 31.29 113.043
465.00 32.63 112.986
465.00 36.51 112.753
465.00 40.99 112.32
465.00 46.84 111.935
465.00 47.85 111.913
465.00 49.18 111.723
465.00 57.21 111.202
465.00 58.99 110.976
465.00 61.46 110.824
465.00 68.51 110.332
465.00 70.69 110.062
465.00 73.59 109.872
465.00 74.87 109.829
465.00 77.48 109.53
465.00 81.72 109.278
465.00 87.87 108.72
465.00 92.89 108.286
465.00 97.68 107.963
465.00 101.01 107.535
465.00 105.11 107.277
465.00 106.95 107.179
465.00 111.40 106.695
465.00 116.93 106.3
465.00 121.67 105.761
465.00 123.48 105.664
480.00 42.70 114.022
480.00 54.67 113.202
480.00 65.08 112.478
480.00 71.30 112.038
480.00 85.50 111.071
480.00 92.46 110.502
480.00 109.21 109.241
480.00 118.88 108.493
480.00 129.21 107.675
480.00 140.39 106.769
480.00 152.36 105.769
480.00 165.42 104.642
495.00 27.45 117.135
495.00 36.20 116.658
495.00 47.54 115.985
495.00 143.41 109.744
495.00 159.70 108.434
495.00 160.40 108.391
495.00 174.53 107.346
495.00 186.64 106.439
495.00 198.61 105.492
495.00 224.52 103.408
Reference

Operational condition: Frequency, MHz = 8 (Liquid)

Fixed Measured
Temperature, K - Liquid Pressure, kPa - Liquid Speed of sound, m/s - Liquid
299.79 130.00 911.09
299.80 520.00 913.77
299.81 980.00 916.96
299.81 1500.00 920.51
299.82 1980.00 923.9
299.83 3440.00 933.79
299.85 6010.00 950.89
300.15 10240.00 978.63
299.67 14920.00 1006.82
350.07 120.00 747.75
350.06 530.00 751.64
350.05 960.00 755.62
350.05 1480.00 760.43
350.04 1960.00 764.8
350.04 3530.00 778.49
350.03 6210.00 800.86
350.00 10200.00 832.31
349.98 14970.00 866.97
350.35 22660.00 915.86
349.96 26230.00 939.02
399.71 120.00 600.99
399.70 510.00 605.91
399.70 1030.00 612.25
399.70 1460.00 617.43
399.70 2040.00 624.18
399.68 3610.00 641.86
399.64 6070.00 667.98
399.64 10120.00 706.83
399.63 15100.00 749.46
399.69 19290.00 782.02
399.62 19680.00 784.97
449.64 130.00 461.18
449.64 500.00 467.67
449.63 960.00 475.36
449.70 1490.00 484.22
449.69 1960.00 491.86
449.77 3600.00 516.36
449.87 5900.00 547.45
450.00 10040.00 596.17
450.19 15080.00 646.97
450.23 16420.00 659.13
499.92 330.00 321.35
499.94 520.00 329.04
499.92 1490.00 354.75
499.91 2030.00 367.4
499.88 3480.00 398.42
499.88 6030.00 444.06
500.00 10650.00 509.56
499.93 11150.00 515.95
549.61 3880.00 300.55
549.56 4550.00 317.1
549.55 5070.00 329.01
549.54 5510.00 338.9
549.97 6640.00 364.29
Reference

Correlations

Property Value Unit Temperature (K) Source
Pvap [1.33; 202.66] kPa [333.88; 477.61] The Yaw... Show Hide
Equationln(Pvp) = A + B/(T + C)
Coefficient A1.38745e+01
Coefficient B-3.32842e+03
Coefficient C-8.89110e+01
Temperature range, min.333.88
Temperature range, max.477.61
Pvap 1.33 kPa 333.88 Calculated Property
Pvap 3.06 kPa 349.85 Calculated Property
Pvap 6.39 kPa 365.82 Calculated Property
Pvap 12.31 kPa 381.79 Calculated Property
Pvap 22.15 kPa 397.76 Calculated Property
Pvap 37.62 kPa 413.73 Calculated Property
Pvap 60.81 kPa 429.70 Calculated Property
Pvap 94.15 kPa 445.67 Calculated Property
Pvap 140.42 kPa 461.64 Calculated Property
Pvap 202.66 kPa 477.61 Calculated Property

Similar Compounds

Cycloeicosasiloxane, tetracontamethyl. Cyclohexadecasiloxane, dotriacontamethyl. Cyclooctasiloxane, hexadecamethyl-. Cyclotetradecasiloxane, octacosamethyl. Cyclotridecasiloxane, hexacosamethyl. Cycloundecasiloxane, docosamethyl. Cycloheptasiloxane, tetradecamethyl-. Cyclopentadecasiloxane, triacontamethyl. Tetracosamethyl-cyclododecasiloxane. Cyclononasiloxane, octadecamethyl-. Cyclopentasiloxane, decamethyl-. Cyclononacosasiloxane, octapentacontamethyl. Cyclooctadecasiloxane, hexatriacontamethyl. Cyclotricosasiloxane, hexatetracontamethyl. Cycloheptadecasiloxane, tetratriacontamethyl.

Find more compounds similar to Cyclotetrasiloxane, octamethyl-.

Mixtures

Sources

Note: Cheméo is only indexing the data, follow the source links to retrieve the latest data. The source is also providing more information like the publication year, authors and more. Take the time to validate and double check the source of the data.