.,
I
(a)
40.0
45.0
50.0
55.0
Heating to 100t
1
J
(b)
15.0
20.0
30.0
35.0
40.0
45.0
50.0
55.0
2B
Heating to 200t
I
(e)
15.0
20.0
25.0
30.0
35.0
2.
Heating to 300·C
Fig. 7. Results of X·ray analysis of the denaturation of iron chlolide according to heating temperature