Disulfide, dimethyl

Data at NIST subscription sites:

NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. The purpose of the fee is to recover costs associated with the development of data collections included in such sites. Your institution may already be a subscriber. Follow the links above to find out more about the data in these sites and their terms of usage.


Condensed phase thermochemistry data

Go To: Top, Phase change data, References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
Δfliquid-62.6 ± 2.0kJ/molCcbVoronkov, Klyuchnikov, et al., 1989ALS
Δfliquid-62.47 ± 0.84kJ/molCcbHubbard, Douslin, et al., 1958ALS
Quantity Value Units Method Reference Comment
Δcliquid-2786.5 ± 0.71kJ/molCcbHubbard, Douslin, et al., 1958Reanalyzed by Cox and Pilcher, 1970, Original value = -2784.2 ± 0.71 kJ/mol; ALS
Quantity Value Units Method Reference Comment
liquid235.39J/mol*KN/AScott, Finke, et al., 1950DH

Constant pressure heat capacity of liquid

Cp,liquid (J/mol*K) Temperature (K) Reference Comment
146.11298.15Scott, Finke, et al., 1950T = 13 to 352 K.; DH

Phase change data

Go To: Top, Condensed phase thermochemistry data, References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled as indicated in comments:
BS - Robert L. Brown and Stephen E. Stein
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
DH - Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
Tboil382.9KN/AWeast and Grasselli, 1989BS
Tboil382.9KN/AMajer and Svoboda, 1985 
Tboil381.15KN/APryor and Platt, 1963Uncertainty assigned by TRC = 1.5 K; TRC
Tboil383.KN/AMcallan, Cullum, et al., 1951Uncertainty assigned by TRC = 1.5 K; TRC
Tboil0.KN/ATrotter and Thompson, 1946TRC
Quantity Value Units Method Reference Comment
Tfus188.5KN/AMcallan, Cullum, et al., 1951Uncertainty assigned by TRC = 0.2 K; TRC
Quantity Value Units Method Reference Comment
Ttriple188.44KN/AScott, Finke, et al., 1950, 2Uncertainty assigned by TRC = 0.02 K; TRC
Quantity Value Units Method Reference Comment
Tc615.0KN/AAnselme and Teja, 1990Uncertainty assigned by TRC = 50. K; Tc > 615 K, which was observed with decomposition; TRC
Tc605.7KN/AMajer and Svoboda, 1985 
Quantity Value Units Method Reference Comment
Δvap38.2 ± 0.6kJ/molAVGN/AAverage of 9 values; Individual data points

Enthalpy of vaporization

ΔvapH (kJ/mol) Temperature (K) Method Reference Comment
33.78382.9N/AMajer and Svoboda, 1985 
37.8312.AStephenson and Malanowski, 1987Based on data from 297. to 402. K.; AC
36.0 ± 0.1341.CHubbard, Douslin, et al., 1958AC
34.9 ± 0.1360.CHubbard, Douslin, et al., 1958AC
33.7 ± 0.1383.CHubbard, Douslin, et al., 1958AC
36.7336.EBWhite, Barnard--Smith, et al., 1952Based on data from 321. to 388. K.; AC
36.2349.N/AScott, Finke, et al., 1950Based on data from 334. to 401. K.; AC
38.2303.N/AScott, Finke, et al., 1950Based on data from 288. to 333. K.; AC

Enthalpy of vaporization

ΔvapH = A exp(-βTr) (1 − Tr)β
    ΔvapH = Enthalpy of vaporization (at saturation pressure) (kJ/mol)
    Tr = reduced temperature (T / Tc)

View plot Requires a JavaScript / HTML 5 canvas capable browser.

Temperature (K) A (kJ/mol) β Tc (K) Reference Comment
298. to 383.50.50.2463605.7Majer and Svoboda, 1985 

Antoine Equation Parameters

log10(P) = A − (B / (T + C))
    P = vapor pressure (bar)
    T = temperature (K)

View plot Requires a JavaScript / HTML 5 canvas capable browser.

Temperature (K) A B C Reference Comment
273. to 333.4.195931397.604-49.163Scott, Finke, et al., 1950Coefficents calculated by NIST from author's data.
334.56 to 401.764.08861337.656-55.267Scott, Finke, et al., 1950Coefficents calculated by NIST from author's data.

Enthalpy of fusion

ΔfusH (kJ/mol) Temperature (K) Reference Comment
9.1927188.44Scott, Finke, et al., 1950DH
9.19188.4Domalski and Hearing, 1996AC

Entropy of fusion

ΔfusS (J/mol*K) Temperature (K) Reference Comment
48.78188.44Scott, Finke, et al., 1950DH

In addition to the Thermodynamics Research Center (TRC) data available from this site, much more physical and chemical property data is available from the following TRC products:


References

Go To: Top, Condensed phase thermochemistry data, Phase change data, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Voronkov, Klyuchnikov, et al., 1989
Voronkov, M.G.; Klyuchnikov, V.A.; Kolabin, S.N.; Shvets, G.N.; Varusin, P.I.; Deryagina, E.N.; Korchevin, N.A.; Tsvetnitskaya, S.I., Thermochemical properties of diorganyl chalcogenides and dichalcogenides RMnR(M = S, Se, Te; n = 1, 2)., Dokl. Phys. Chem. (Engl. Transl.), 1989, 307, 650-653, In original 1139. [all data]

Hubbard, Douslin, et al., 1958
Hubbard, W.N.; Douslin, D.R.; McCullough, J.P.; Scott, D.W.; Todd, S.S.; Messerly, J.F.; Hossenlopp, I.A.; George, A.; Waddington, G., 2,3-dithiabutane, 3,4-dithiahexane and 4,5-dithiaoctane: Chemical thermodynamic properties from 0 to 1000°K, J. Am. Chem. Soc., 1958, 80, 3547-3554. [all data]

Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G., Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [all data]

Scott, Finke, et al., 1950
Scott, D.W.; Finke, H.L.; Gross, M.E.; Guthrie, G.B.; Huffman, H.M., 2,3-Dithiabutane: low temperature heat capacity, heat of fusion, heat of vaporization, vapor pressure, entropy and thermodynamic functions, J. Am. Chem. Soc., 1950, 72, 2424-2430. [all data]

Weast and Grasselli, 1989
CRC Handbook of Data on Organic Compounds, 2nd Editon, Weast,R.C and Grasselli, J.G., ed(s)., CRC Press, Inc., Boca Raton, FL, 1989, 1. [all data]

Majer and Svoboda, 1985
Majer, V.; Svoboda, V., Enthalpies of Vaporization of Organic Compounds: A Critical Review and Data Compilation, Blackwell Scientific Publications, Oxford, 1985, 300. [all data]

Pryor and Platt, 1963
Pryor, W.A.; Platt, P.K., Reaction of radicals V. Reaction of Phenyl Radicals with Aliphatic Disulfides, J. Am. Chem. Soc., 1963, 85, 1496. [all data]

Mcallan, Cullum, et al., 1951
Mcallan, D.T.; Cullum, T.V.; Dean, R.A.; Fidler, F.A., The Preparation and Properties of Sulfur Compounds Related to Petroleum I. The Dialkyl Sulfides and Disulfides, J. Am. Chem. Soc., 1951, 73, 3627-32. [all data]

Trotter and Thompson, 1946
Trotter, I.F.; Thompson, H.W., Infrared SPectra of Thiols, Sulfides, and Disulfides, J. Chem. Soc., 1946, 1946, 481. [all data]

Scott, Finke, et al., 1950, 2
Scott, D.W.; Finke, H.L.; Gross, M.E.; Guthrie, G.B.; Huffman, H.M., 2,3-Dithiabutane: Low Temperature Heat Capacity, Heat of Fusion, Heat of Vaporization, Vapor Pressure, Entropy and Thermodynamic Functions, J. Am. Chem. Soc., 1950, 72, 2424-30. [all data]

Anselme and Teja, 1990
Anselme, M.J.; Teja, A.S., The critical properties of rapidly reacting substances, AIChE Symp. Ser., 1990, 86, 279, 128-32. [all data]

Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw, Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2 . [all data]

White, Barnard--Smith, et al., 1952
White, P.T.; Barnard--Smith, D.G.; Fidler, F.A., Vapor Pressure--Temperature Relationships of Sulfur Compounds Related to Petroleum, Ind. Eng. Chem., 1952, 44, 6, 1430-1438, https://doi.org/10.1021/ie50510a064 . [all data]

Domalski and Hearing, 1996
Domalski, Eugene S.; Hearing, Elizabeth D., Heat Capacities and Entropies of Organic Compounds in the Condensed Phase. Volume III, J. Phys. Chem. Ref. Data, 1996, 25, 1, 1, https://doi.org/10.1063/1.555985 . [all data]


Notes

Go To: Top, Condensed phase thermochemistry data, Phase change data, References