Síran draselno-hlinitý KAl(SO4)2 Mr = 258,206
DGf0 = -2 240 m0vaq = 3,0 m25vaq = 7,23 m50vaq = 17,0 m80vaq = 71
DHf0 = -2 470 m10vaq = 4,0 m30vaq = 8,39 m60vaq = 24,75 m90vaq = 109
S0 = 205 m20vaq = 5,9 m40vaq = 11,7 m70vaq = 40,0 m92,5vaq = 119
cp25 = 0,747 3
          trihydrát KAl(SO4)2.3H2O Mr = 312,252
DGf0 = -2 975 DHf0 = -3 381 S0 = 314
          dodekahydrát (kamenec) KAl(SO4)2.12H2O Mr = 474,390
tt = 92,5 r20 = 1,757 DGf0 = -5 141,7 er = 6,67 m40vaq = 23,61
t-9aq = 64,5 nDa20 = 1,456 45 DHf0 = -6 061,8 c = -7,28 m50vaq = 35,61
t-12aq = 200 nb20 = 1,429 S0 = 687,4 m0vaq = 5,92 m60vaq = 55,85
Dht = 59,1 nDmb20 = 1,456 cp25 = 1,372 m20vaq = 11,27 m80vaq = 173,18
m90vaq = 229,1
bezb. - a - kub. (a = 1 208);   b - hex. (a = 698,2   c = 1 732) - min. kalinit


Síran draselno-chromitý KCr(SO4)2 Mr = 283,221
r20 = 2,657 er = 3,5 DHf0 = -2 353 c = 261,88
š. zel. - hex. (a = 473,7   c = 803,0);   rozp. kys., H2O (málo)

          dodekahydrát (kamenec) KCr(SO4)2.12H2O Mr = 499,406
tt = 89 r25 = 1,826 DHf0 = -5 791 nD20 = 1,481 4 m25vaq = 24,39
t-10aq = 100 r20 = 1,834 S0 = 816,4 er22 = 6,34 m100vaq = 50
t-12aq = 400 cp19-52 = 1,356 c17 = 152,68
červ. fial. - kub. (a = 1 220,4)


Síran draselný K2SO4 Mr = 174,260
tt = 1 069 r18 = 2,663 DGf0 = -1 321,4 m0vaq = 7,18 m40vaq = 14,8
tv = 1 681 r20 = 2,662 DHf0 = -1 437,8 m10vaq = 9,3 m60vaq = 18,36
ta ® b = 588 Dht = 210,3 S0 = 175,6 m20vaq = 11,05 m80vaq = 21,4
g1070 = 144 nDa20 = 1,493 5 cp25 = 0,746 6 m25vaq = 12,0 m100vaq = 23,97
g1306 = 129 nDb20 = 1,494 7 er478 = 5,87 m30vaq = 13,0 Dhrozp18 = 151
g1656 = 107 nDc20 = 1,497 3 c = -4,83
bezb. - a - ort. (a = 577,2  b = 1 007,2  c = 748,3) - min. arkanit
            b - hex.;  rozp. EtOH (m20 = 1,46),  MeOH,  glyc.,  aceton (ne)

          monohydrát K2SO4.H2O Mr = 192,278
m0vaq = 8,53 m10vaq = 10,28 m15vaq = 12,72
          10%ní vodný roztok K2SO4:
cM20 = 0,620 r20 = 1,080 6 nD20 = 1,345 2 h20 = 1,132 hkin20 = 1,048

Síran hlinitý Al2(SO4)3 Mr = 342,153
troz = 770 r20 = 2,71 DGf0 = -3 101 cp25 = 0,765 m60vaq = 59,2
c = -4,54 r22,5 = 2,672 DHf0 = -3 435 m0vaq = 31,2 m100vaq = 98,1
S0 = 239,2 m20vaq = 36,4 Dhrozp20 = -1 024
b. - hex.;   v čisté H2O částečně hydrolyzuje

          oktadekahydrát Al2(SO4)3.18H2O Mr = 666,425
t-aq = 86,5 r22 = 1,767 nDb = 1,477 m0vaq = 86,2 m60vaq = 262,7
tvrd. 1,5-2 nDa = 1,474 nDc = 1,483 m20vaq = 108,2 m100vaq = 1 108
bezb. - trikl. - min. alunogenit, nebo monokl.

Legenda
SLOUČENINY
Symboly, jednotky a použité zkratky
Periodická soustava prvků