Table 1 Passivation sample number.

From: Evaluation study on gas-phase passivation inhibiting the spontaneous combustion tendency of ferrous sulfide compounds

Number

Passivation concentration

Passivation time

Acronyms

-

%

hours

1

3

2

B2

2

4

B4

3

6

B6

4

8

B8

5

6

2

C2

6

4

C4

7

6

C6

8

8

C8

9

9

2

D2

10

4

D4

11

6

D6

12

8

D8

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