| abstract |
A moisture-absorbent unit capable of sufficiently restricting condensation inside a semi-sealed container that can be miniaturized and whose interior is at a comparatively high humidity, when this semi-sealed container undergoes a sharp temperature drop from being placed in a low-temperature environment, and to provide a semi-sealed container having the moisture-absorbent unit. A moisture-absorbent unit used inside a semi-sealed container, this moisture-absorbent unit characterized in having a porous moisture-absorbent material for which the difference in moisture absorption, obtained by subtracting the moisture absorption at a relative humidity of 85% from the moisture absorption at a relative humidity of 95%, is 15% by mass or more of the moisture-absorbent material before absorption. |