Inhibitors
|
Conc. Ppm
|
Weight before
|
Weight after
|
Weight loss
|
Corrosion rate (mg/cm2 h)
|
Inhibition efficiency (%)
|
Surface area coverage
|
---|
|
Blank
|
0.7296
|
0.6706
|
0.059
|
18.27
|
–
|
–
|
S1
|
50
|
0.7187
|
0.7035
|
0.0152
|
4.71
|
74.24
|
0.74
|
100
|
0.7106
|
0.6998
|
0.0108
|
3.34
|
81.69
|
0.82
|
200
|
0.7185
|
0.7097
|
0.0088
|
2.72
|
85.08
|
0.85
|
300
|
0.7189
|
0.7123
|
0.0066
|
2.04
|
88.81
|
0.89
|
S2
|
50
|
0.7292
|
0.7165
|
0.0127
|
3.93
|
76.04
|
0.76
|
100
|
0.7354
|
0.7251
|
0.0103
|
3.19
|
80.57
|
0.81
|
200
|
0.7055
|
0.6995
|
0.006
|
1.86
|
88.68
|
0.89
|
300
|
0.7123
|
0.7080
|
0.0043
|
1.33
|
91.89
|
0.92
|
S3
|
50
|
0.7073
|
0.695
|
0.0123
|
3.81
|
77.68
|
0.78
|
100
|
0.701
|
0.6911
|
0.0099
|
3.06
|
82.03
|
0.82
|
200
|
0.7045
|
0.6973
|
0.0072
|
2.23
|
86.93
|
0.87
|
300
|
0.7046
|
0.6990
|
0.0056
|
1.73
|
89.84
|
0.90
|
S4
|
50
|
0.7144
|
0.7057
|
0.0087
|
2.69
|
86.41
|
0.86
|
100
|
0.6956
|
0.6888
|
0.0068
|
2.11
|
89.38
|
0.89
|
200
|
0.7098
|
0.7023
|
0.0075
|
2.32
|
88.28
|
0.88
|
300
|
0.7198
|
0.7123
|
0.0075
|
2.32
|
88.28
|
0.88
|
S5
|
50
|
0.7062
|
0.6933
|
0.0129
|
3.99
|
80.45
|
0.80
|
100
|
0.7028
|
0.6941
|
0.0087
|
2.69
|
86.82
|
0.87
|
200
|
0.7004
|
0.6964
|
0.004
|
1.24
|
93.94
|
0.94
|
300
|
0.7045
|
0.7008
|
0.0037
|
1.15
|
94.39
|
0.94
|
S6
|
50
|
0.7057
|
0.6932
|
0.0125
|
3.87
|
77.27
|
0.77
|
100
|
0.7967
|
0.7896
|
0.0071
|
2.20
|
87.09
|
0.87
|
200
|
0.7177
|
0.7128
|
0.0049
|
1.52
|
91.09
|
0.91
|
300
|
0.7123
|
0.7080
|
0.0043
|
1.33
|
92.18
|
0.92
|
S7
|
50
|
0.7208
|
0.7098
|
0.011
|
3.41
|
83.53
|
0.84
|
100
|
0.7091
|
0.703
|
0.0061
|
1.89
|
90.87
|
0.91
|
200
|
0.7102
|
0.7079
|
0.0023
|
0.71
|
96.56
|
0.97
|
300
|
0.7103
|
0.7089
|
0.0014
|
0.43
|
97.90
|
0.98
|
S8
|
50
|
0.7152
|
0.7023
|
0.0129
|
3.99
|
79.84
|
0.80
|
100
|
0.7333
|
0.7264
|
0.0069
|
2.14
|
89.22
|
0.89
|
200
|
0.7225
|
0.7187
|
0.0038
|
1.18
|
94.06
|
0.94
|
300
|
0.7046
|
0.7009
|
0.0037
|
1.15
|
94.22
|
0.94
|
S9
|
50
|
0.7272
|
0.7114
|
0.0158
|
4.89
|
77.10
|
0.77
|
100
|
0.7221
|
0.712
|
0.0101
|
3.13
|
85.36
|
0.85
|
200
|
0.7193
|
0.7115
|
0.0078
|
2.41
|
88.70
|
0.89
|
300
|
0.7330
|
0.7260
|
0.007
|
2.17
|
89.86
|
0.90
|
S10
|
50
|
0.718
|
0.7047
|
0.0133
|
4.12
|
77.46
|
0.77
|
100
|
0.7382
|
0.7311
|
0.0071
|
2.20
|
87.97
|
0.88
|
200
|
0.6981
|
0.6934
|
0.0047
|
1.46
|
92.03
|
0.92
|
300
|
0.712
|
0.708
|
0.004
|
1.24
|
93.22
|
0.93
|
- Obs. the highest inhibition efficiency (%) in 7th column is showed in italics