Table 2:
Acidity and sodium acetate in filtrate and washed water in nitration and hydrolysis step.
Acidity (% w/v as HNO
3
) of nitration
Sodium acetate (% w/v) of hydrolysis
Batch-1
Batch-2
Batch-3
Batch-1
Batch-2
Batch-3
Filtrate
20
20.1
19.8
19
19.2
19.7
Washed water I
7.2
8.4
9
7.5
8.1
8.3
Washed water II
2.8
4
4.4
2.5
3.7
4.0
Washed water III
0
1.2
1.6
0
1
1.2
Washed water IV
0
0.3
0.5
0
0.3
0.4