RED WATER 
143 
The following results were obtained by chemical analysis : 
C0 3 = 58-6 grams per litre 
Cl = 154-9 „ „ „ 
S0 4 = 86-4 
P0 4 = 1-6 
K = 5-5 
Na = 158-7 
SO, 
trace 
The carbonic acid is present both as carbonate and bi- 
carbonate and the composition of the salts in solution may 
be given approximately as follows : 
Na 2 C0 3 = 
96*8 grams per 
litre 
NaHC0 3 - 
5-1 „ 
?? 
>> 
NaCl = 
247-0 „ 
)} 
>9 
KC1 = 
10-5 „ 
)f 
99 
Na 2 S0 4 — 
53-8 „ 
}} 
99 
Na 2 HP0 4 = 
2-4 „ 
} } 
99 
Total solids in solution 415*6 
Analysis of Solid Besidue 
Total C0 3 = 29-1 per cent. 
Cl = 10-9 „ „ 
S0 4 = 24-4 „ „ 
K = 0-3 „ „ 
Na = 35*3 ,, „ 
and the probable composition as follows : 
Na 2 C0 3 = 27-8 per cent. 
NaHC0 3 = 18-5 „ 
NaCl = 17*0 „ 
KC1 = 0-7 „ „ 
Na 2 S0 4 = 36-0 „ 
N 
25 c.c.s of solution decolourised 10 c.c.s of ^ KMn0 4 . 
No ammonia could be detected on boiling with alkali or 
with zinc dust, and Hosva’s reagent only showed a very slight 
pink tinge after long standing. 
