2H2S + SO2 3S + H2O
|160 oC||444.6 oC
|S13.8||Sn (n is maximum)
|Sn, (incl S3, S4
|S8 going to S2
at higher temperatures
A rubbery material called "plastic sulphur" can be obtaind by quickly cooling molten sulphur.
SnCl2 + 2H2S H2Sn+2 + 2HCl
S8 + xs F2 SF6 (+ SF4 + S2F10)
SCl2(l) + 4NaF(s) + SF4(g) + Na2S + 2NaF
SF4 + 2H2O SO2 + 4HF
It is used as a selective fluorinating agent:
>C=O is converted to >CF2
-C(O)OH is converted to -CF3
It is used as a gaseous electrical insulator, much better than air, because of its high dielectric constant and lack of reactivity.
¼S8(s) + Cl2(g) S2Cl2
(SCl2 is unstable, decomposing slowly to S2Cl2 and chlorine.)
Sulphur dichloride or disulphur dichloride will dissolve more sulphur to form sulphanes upto around S100Cl2.
SO2 + PCl5 SOCl2 + POCl3
Thionyl chloride is a liquid (bp = 80 oC) which is rapidly hydrolysed:
SOCl2 + H2O SO2(g) + 2HCl(g)Because the hydrolysis products are both gases, one of its great uses in inorganic chemistry is in the dehydration of hydrated metal chlorides to produce the anhydrous substance.
SO2 + Cl2 SO2Cl2 FeCl3 catalyst
It is used as a chlorinating agent in organic synthesis.
SO32(aq) + S(s) S2O32(aq)
S2O32 + I2 2I2 + S4O62
AgCl(s) + 2Na2S2O3(aq) Na3[Ag(S2O3)2] + NaCl