How to produce a constant moisture in a closed container
Water solution |
FORMULA |
% Relative moisture at 20°C |
di sodium hydrogen phosphate |
Na2 HPO4 – 12 H2O |
95 |
Sodium carbonate |
Na2CO3 – 10 H2O |
92 |
Zinc sulfate |
ZnSO4 – 7 H2O |
90 |
Potassium chloride |
KCl |
86 |
Ammonium sulfate |
(NH4)2 SO4 |
80 |
Sodium chloride |
NaCl |
76 |
Sodium nitrite |
NaNO2 |
65 |
Ammonium nitrate |
NH4NO3 |
63 |
Calcium nitrate |
Ca (NO3)2 – 4H2O |
55 |
Potassium carbonate |
K2CO3 |
45 |
Zinc nitrate |
Zn (NO3)2 – 6H2O |
42 |
Calcium chloride |
CaCl2 - 6H2O |
32 |
Lithium chloride |
LiCl – H2O |
15 |