Substance

Formula

Reaction

Molar wt g/mole

n

EF kg SO2/kg

Sulphur dioxide

SO2

SO 2 + H 2 O 2 H + + SO 3 2

64.06

2

1

Hydrogen fluoride

HF

HF H + + F

20.01

1

1.60

Trifluoroacetic acid (TFA)

CF3COOH

CF 3 COOH CF 3 COO + H +

114.02

1

0.28

Hydrogen chloride

HCl

HCl H + + Cl

36.36

1

0.88