Talk:Sodium–potassium alloy

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IUPAC name?[edit]

Does NaK have an IUPAC name? zanderredux (talk) 05:18, 23 July 2008 (UTC)[reply]

As far as I know, IUPAC doesn't name alloy.129.94.222.112 (talk) 05:24, 19 March 2010 (UTC)[reply]

Physical properties[edit]

Fixed some typos and awkward wording here. Skeletoroforange (talk) 05:43, 20 November 2014 (UTC)[reply]

Explosion hazard and desiccant[edit]

Quantities as small as one gram can be a fire or explosion risk(with reference number 2 adedd) is maybe over done for security. Data sheet speaks only about PERHAPS explosive and in TV Myth Buster showed clearly that Mc Gyver ? cannot open a wall or causing small damage with 1g or 1 kg Na or K also standard school class physics experiment showing natrium or kalium burning with air or water. Na burns with Cl gas to solid NaCl same with O but maybe some H2 rised with H2O but not collected.

It is unclear to me, based on this article, how it is both an explosion hazard (presumably because it reacts with water) yet it is used as a desiccant? Can someone clear this up a bit? Raidfibre (talk) 16:15, 11 November 2008 (UTC)[reply]

I think there's some confusion on this page between the use of NaK as an alloy, and the separate uses of sodium and potassium. They have different uses and reactivity, with the alloy being generally more reactive than the individual elements. An MSDS is a much better source of reactivity data than a mythbusters clip, even if they do tend to err on the side of caution. Information about the individual elements should not be in the article to avoid confusion.

As to use as a dessicant, I believe this was written in the context of drying organic solvents for moisture-sensitive synthetic chemistry. The dessicant added will react with trace amounts of water in the solvent, allowing the dry solvent to be separated by distillation. Whilst sodium and potassium are regularly used as dessicants, the use of NaK alloy to dry solvents is not something I've ever come across. I cannot find a source for it's use, so think this section should be removed. DHChemist (talk) 17:02, 25 January 2015 (UTC)[reply]

Miscibility[edit]

Is it miscible with mercury?--188.26.22.131 (talk) 15:34, 8 April 2011

Rather than making readers conver to Kelvin, ¿why not list all temperatures in Kelvin?[edit]

¡Having to convert all of the temperature is annoying! — Preceding unsigned comment added by 2601:643:C000:5C2A:C09F:C82E:CCC2:AFF6 (talk) 00:44, 4 September 2016 (UTC)[reply]

What containers and pipework can be used[edit]

Article says it attacks PTFE. What can it be stored in at room temp (Some glasses, other plastics ?) ? What can be used for pipework at working temperatures ? - Rod57 (talk) 14:14, 8 August 2018 (UTC)[reply]

solid NaK in space?[edit]

Does NaK really solidify in Earth orbit? Greenhouse effect says:

"An ideal thermally conductive blackbody at the same distance from the Sun as Earth would have a temperature of about 5.3 °C (41.5 °F). However, because Earth reflects about 30%[17][18] of the incoming sunlight, this idealized planet's effective temperature (the temperature of a blackbody that would emit the same amount of radiation) would be about −18 °C (0 °F)."

But because they spend significant time in Earths shadow they might cool enough to freeze and because they are probably very reflective, they might not absorb enough energy to melt (completely) while in direct sunlight.

^[1]. does not suggest they are solid and I could not read ^[2].

Solid or liquid, a high speed impact would have pretty much the same effect, so we could just remove the state. Darsie42 (talk) 00:14, 13 January 2021 (UTC)[reply]

References

^ A. Rossi et al, "Effects of the RORSAT NaK Drops on the Long Term Evolution of the Space Debris Population" Archived 2016-03-10 at the Wayback Machine, University of Pisa, 1997.
^ C. Wiedemann et al, "Size distribution of NaK droplets for MASTER-2009", Proceedings of the 5th European Conference on Space Debris, 30 March-2 April 2009, (ESA SP-672, July 2009)

How does NaK reakt with Carbondioxide?[edit]

As the Question says, does NaK reakt with CO₂? In an atmosphere of pure CO₂ or of CO₂ mixed with inert Gasses, but in any cases without free Oxygen present. In what way? What is if the CO₂ is liquid by pressure? Will NaK extract the Oxygen and let the Carbon as solid or will additional NaK react with Carbon too? (if the second, to what Compound?)
Thanks for all answers, Erik --2003:ED:F7FF:1634:A922:F06:B366:6632 (talk) 09:51, 27 July 2021 (UTC)[reply]

[1] A. Rossi et al, "Effects of the RORSAT NaK Drops on the Long Term Evolution of the Space Debris Population" Archived 2016-03-10 at the Wayback Machine, University of Pisa, 1997.

[2] C. Wiedemann et al, "Size distribution of NaK droplets for MASTER-2009", Proceedings of the 5th European Conference on Space Debris, 30 March-2 April 2009, (ESA SP-672, July 2009)

[1]

[2]