Experimental group

Temperature ˚C

Solution state

Crustation inhibitor efficiency (%)

1

100

The solution is transparent and stable without turbidity

89.37

2

110

The solution is transparent and stable without turbidity

88.74

3

120

The solution is transparent and stable without turbidity

86.03

4

130

The solution is transparent and stable without turbidity

85.73

5

140

The solution is transparent and stable without turbidity

85.17

6

150

The solution is transparent and stable without turbidity

80.65

7

160

The solution appeared granular and slightly cloudy

73.16