{m ‘GILL ] 
OXIDATION OF FERROUS CHLORIDE 
53 
DESCRIPTION OF THE SAMPLES OF FERROUS CHLORIDE USED IN THE EXPERIMENTS. 










Total Equiva- | Ferric 
SAMPLE | Chlorine lent Oxide REMARKS 
Dc: Fes Cly. | Approx 
I 36°51 65°3 30 Nearly 1% of the chlorine existed as Fey Clg. 
II 35°53 63°6 30 
III 19°50 34°9 60 Made from II by addition of Fe; (OH); and 
roasting. 
IV 46°98 84'1 25 
V | 47°3 81°5 15 CORRE 2°8% Fe, Clg From iron and 
| HCl. 
VI eee O71 32°14 65 By addition of Fe, O; to V, moistening, mix- 
ing and drying on an iron plate. 
Al 47°3 81°5 10 Prepared from iron (filings) and AC. 
Same as V. 
Bl 17:97 32°14 65 Same as VI. 
C1 49°24 87'9 10 Like A, but coarser granules. 
D! 21°87 39°1 60 The fine siftings from C, mixed, dry, with 
€o a 
E 41°5 74:1 20 Prepared ae reaction of Fe SO, Ca Cl. 
F1 19:23 34°3 65 From D, by mixing with water and redrying. 
G 1 19°56 34°9 65 Same as F, but is the fine dust sifted out. 
H | 7:46 13:3 85 From M by addition of Fe, O3. 
M | 9:04 16:1 80 From Fe SO, and Ca Cl. 
S 350 grms crystallized Fe SO,, 7 H, O dried to 
| weigh 185 grms—contains 50°1% SO3;= 
95°2% Fe SO». 
Me ki Like S, but an old peroxidized sample 
copperas used; product contained 
479% SO3—. 
x 62°3 A sample of Ca Cl, fused and powdered, 
| chlorine corresponds to 97.4% Ca Clos 
Reaction alkaline ; probably about 2/ 
bi Ca O—trace moisture. 
CC 1 50°9 90°9 10 Prepared from C by heating to loss of 11°27 
of its weight. Loss chiefly H,O 
(Expt. 7). 
SX Li) 52028 A mixture of Fe SO, (S) and Ca Cl, (X) in 
| ratio 100; 71, %.e., in molecular pro- 
portions. 
BOA A ese ea 93°2 5 Prepared from A by heating to loss of 9°6% 
weight, contains Zn Cl, from drying 
on galv. iron plate. 
EE 43°75 78°1 5 Prepared like E, this last being added to it 
and the whole carefully dried. It con- 
tains 14°8% Ca SO,—(caleulated from 
| 8°72% SO, found). 



1 These samples, especially A and AA, contained a trace of Zn Cl: from having been roasted on a 
plate of galvanized iron, 
