654 
Proceedings of the Royal Society of Edinburgh. [Sess 
V. 
V-V. 
^HCl. 
M*. 
X. 
& b 
K‘ 
16 
100 
392 
176*1 
•26 
174-8 
32 
104 
400 
201-4 
•33 
198-2 
Rate of Catalysis by Thiazole Hydrochloride. 
t = 25‘0° C. 20 c.c. Thiazole Hydrochloride. 
1 c.c. Methyl Acetate. 
r N 
5 c.c. — 
16 
1 c.c. 
HC1, 15 c.c. ^ KC1. 
’ 16 
Methyl Acetate. 
t. 
X. 
A-x. 
k. 
Another 
Cata- 
lysis. 
t. 
X. 
A-x. 
h 
Another 
Cata- 
lysis. 
360 
•85 
21-60 
1067 
1041 
360 
•82 
21-63 
1028 
1067 
1500 
3-25 
19-20 
1041 
1059 
1500 
3-12 
19-33 
995 
1009 
3090 
6-17 
16-28 
1039 
1051 
3090 
5-95 
16-50 
995 
1021 
5990 
10-53 
11-92 
1055 
1097 
5990 
10-27 
12-18 
1020 
1023 
7260 
12-20 
10-25 
1079 
1086 
7260 
11-72 
10-73 
1016 
1023 
Mean = 
= 1060 
Mean = 1015 
Hydrolysis at v= 16 is x '25 = '2160 4= 173. 
J 1015 IC 
vr 
20 c.c. — Thiazole Hydrochloride. 
32 J 
1 c.c. Methyl Acetate. 
6-7 c.c. — HC1, 13-3 c.c. — KC1. 
32 ’ 32 
1 c.c. Methyl Acetate. 
t. 
X. 
A-x. 
h 
t. 
X. 
A -- x. 
h 
1500 
2T3 
20-32 
6639 
2880 
3-90 
18-55 
6610 
2880 
3-95 
18-50 
6707 
4050 
5-25 
17-20 
6569 
6840 
8-38 
14-07 
6825 
6840 
8-65 
14-20 
6688 
8620 
9-95 
12-50 
6784 
8620 
9-90 
12-55 
6739 
Mean 
= 6739 
Mean 
= 6707 
If 
Hydrolysis at v — 32 is x -3 = *3348 = 190. 
J J 6707 K 
