Talk:Sodium sulfide

PubChem Id
Someone should please check the given PubChem Id (currently 237873) - it points to Na2HS. Probably PubChem entry 14804 (Na2S) fits better!? NE5147-1202 (talk) 06:14, 25 April 2012 (UTC)

Chembox
Is the image OK?--Wickey-nl (talk) 14:45, 24 July 2010 (UTC)
 * It has an antifluorite structure, so the fluorite image works well for this any many related materials. Alkali metal oxides are the same, I think. The main message we aimed for was that readers understand that S2- only exists in the solid, and virtually no where else.--Smokefoot (talk) 14:54, 24 July 2010 (UTC)

Japanese Suicuides
You guys feel the Japanese suicide epidemic caused by inhaling sodium sulfide should have a section in the article? It's the only reason I know what sodium sulphide is and why I came to this page —Preceding unsigned comment added by 123.243.155.250 (talk) 15:16, 4 December 2010 (UTC)
 * Sure thing, just provide some references when you write the section and follow Wikipedia Manual of style bcartolo (talk) 13:12, 28 May 2012 (UTC)
 * Probably not a big deal. It's trivia in my book - 99.99999% is used for other purposes.   A sentence in the safety section.--Smokefoot (talk) 13:28, 28 May 2012 (UTC)

Phase diagram
https://www.sciencedirect.com/science/article/pii/S0040603102001582

phase diagram of SodiumSulfide and water. Shows Eutectic freeze below 0degC at 10%conc. then 50 and 100. well 100degC is boil...

Wikistallion (talk) 15:48, 22 April 2018 (UTC)

Freeze minimum around -10degC at chemically 45hydrate. 2.1%mol Na2S which is physical mix of H2O and Xhydrate.phase. the nonahydrate doesnt properly show.

Then at 10% mol Na2S melt almost 100degC max nonahydrate (?) with 80degC eutectic minimum  at 1/15 mol phasemix. that then probably IS the nonahydrate and pentahydrate. but pentahydrate Melt seems to be at 200degC...

h2O then evaporates above that.

Any scientist, repeat that under geological pressure to find melt of Trihydrate etc. in phasediagram. Same thing runs on Na2S - S phase diagram. is also available. there actual Na4S or Na6S under pressure? thats high pressure sulfide variants. do they exist? Wikistallion (talk) 16:19, 22 April 2018 (UTC)

Assume Temperature say 80degC. there would be TWO different Melt points. One gets pentahydrate and dekahydrate. Thats Eutectic solidification. Concentration of solution determines actual mass ratio of the two phases.

Same at 0..-10: also solidification of 2phases. cooling down from 70degC yields jzst pentahydrate crystal. Or different higher hydrate say 21hydrate? thats how this works Wikistallion (talk) 16:51, 22 April 2018 (UTC)

Discrepancies
"Both are colorless water-soluble salts (...)" versus "Although the solid is yellow, solutions of it are colorless."Eudialytos (talk) 20:04, 7 April 2020 (UTC)

Eh... the HYDRONIUM.
Na2S 9H2O   =  Na2SO3 +H18O6  =  Na2SO3+6H3O

So...  H3O is anxious. instead of H2O2.

Here it is.

a hydrate of Sulfide   is  a Sulfite  and HYDRONIUM. Wikistallion (talk) 16:13, 18 March 2021 (UTC)