Heptachlor epoxide

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.


Phase change data

Go To: Top, 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:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos

Quantity Value Units Method Reference Comment
Tfus439.KN/APlato, 1972Crystal phase 1 phase; Uncertainty assigned by TRC = 1. K; TRC
Tfus436.0KN/APlato and Glasgow, 1969Uncertainty assigned by TRC = 0.2 K; TRC

Enthalpy of vaporization

ΔvapH (kJ/mol) Temperature (K) Method Reference Comment
75.373. to 423.GCGoel, McConnell, et al., 2007AC

Enthalpy of fusion

ΔfusH (kJ/mol) Temperature (K) Method Reference Comment
2.85434.9DSCKsia«807»azczak and Nagata, 1995AC

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, Phase change data, Notes

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

Plato, 1972
Plato, C., DSC as a general method for determining purity and heat of fusion of high-purity organic chemicals, Anal. Chem., 1972, 44, 1531. [all data]

Plato and Glasgow, 1969
Plato, C.; Glasgow, A.R., Jr., Differential scanning calorimetry as a general method for determining the purity and heat of fusion of high-purity organic chemicals. Application to 95 compounds, Anal. Chem., 1969, 41, 2, 330, https://doi.org/10.1021/ac60271a041 . [all data]

Goel, McConnell, et al., 2007
Goel, Anubha; McConnell, Laura L.; Torrents, Alba, Determination of vapor pressure-temperature relationships of current--use pesticides and transformation products, Journal of Environmental Science and Health, Part B, 2007, 42, 4, 343-349, https://doi.org/10.1080/03601230701309494 . [all data]

Ksia«807»azczak and Nagata, 1995
Ksia«807»azczak, A.; Nagata, I., Crystal-plastic and plastic-liquid phase transitions, and purity determination, Thermochimica Acta, 1995, 254, 31-39, https://doi.org/10.1016/0040-6031(94)02032-J . [all data]


Notes

Go To: Top, Phase change data, References