390 
K,SO,. 
ie dyo: v» in Erg: 
11029: 811 2931 
1202 815 2861 die = 1.872 — 0.000545 (f — 1100). 
1291 1.768 2770 
has a mean value of 0,90 Erg per degree Celsius. 
K,Cr,0;. 
ade Ayo: win Erg: 
4209 2.211 3620 
463 2.242 3586 die = 2.285 —0.000695 (¢ — 400). 
497 2201 3575 
Ou 
Between 480° and 540° C. — 
a can be estimated to be 0,86 Erg per degree. 
K,MoQx,. 
i: dyo Pe In Ere: 
964° 2.342 3227 
1124", “2942. 3128 on — 2.342 — 0.00060 (f — 964) — 0.000000128 (f — 964)2. 
1324 2.110 2933 
dp 
_— has a mean value of 0,79 Erg per degree. 
Ot 
K,WO,. 
ie do: # in Erg: 
991° 3.120 3376 
1201 2954 3051 dy = 3.113 — 0.00082 (t — 1000) + 0.000000162 (¢ -— 1000)2. 
1361 2.837 2806 
Ou 
dt 
has a mean value of 1,6 Erg per degree. 
KNO. 
Bees do: # in Erg: 
394° 1.826 1588 
460 1.774 1538 ce = 1.898 — 0.0007681 (f— 300°) *). 
532 1.720 1478 
Ou 
Ot 
has a mean value of 0,83 Erg per degree. 
KPO.. 
ee Ago: “in Erg: 
988° 2.030 2244 
1090 1.986 2172 di = 2.111 — 0.00043 (¢ — 800). 
1195 1.941 2074 
0 
Up to 1200°C. = is constant, and 0,91 Erg per degree; afterwards it increases 
to about 1,28 Erg per degree. 
*) In the Dutch paper this formula contains an error; the numbers given here 
are the right ones. 
