400–430 degrees Celsius heated bath

I want to perform a reaction which needs the temperature to be maintained between 400–430 °C. Since it's the only practical solution, I opted for a heated bath.


I'm looking for a hydrocarbon fraction/blend with the boiling point in this range, however, I keep finding conflicting information. If anyone knows such a hydrocarbon product please, let me know.




If it doesn't specifically need to be a hydrocarbon, zinc metal melts at 419.5 °C. Could you do an "ice bath" of zinc chunks in molten zinc, maintaining the melt right at its melting point?


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You can try $\ce{C30}$ hydrocarbon, triacontane (CAS #: 638-68-6). It is a straight chain hydrocarbon with formula weight of $\pu{422.8 gmol^{-1}}$ ($n$-$\ce{C30H62}$). It is a solid at $\pu{25 ^{\circ}C}$ and [NIST Webbook](https://webbook.nist.gov/cgi/cbook.cgi?ID=C638686&Mask=4) reported its boiling point as $\pu{722.9 K}$ ($\approx\pu{450 ^{\circ}C}$) at $\pu{1 atm}$. More phase changing data can be found in [NIST Webbook] and following reference:


* J. S. Chickos, W. Hanshaw, “Vapor Pressures and Vaporization Enthalpies of the *n*-Alkanes from $\ce{C21}$ to $\ce{C30}$ at $\mathrm{T} = \pu{298.15 K})$ by Correlation Gas Chromatography,” *J. Chem. Eng. Data* **2004**, *49(1)*, 77–85 (DOI: 10.1021/je0301747).


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