Additive

Concentration used, mM

Total applied^a dose, kGy

Total protection^b %

Hydrazine

3.2

8

16

34

98

145

12.5

12.4

18.3

Acetone

3.2

8

16

204

336

540

57

68

75

4-Aminopyridine

0.32

0.96

1.6

3.2

8

16

84

120

207

296

547

1336

54

68

76

24

92

96

Phenol

0.32

0.96

1.6

3.2

191

405

585

700

72

84

97

98