New answers tagged

1

Milk of magnesia (~8% Mg(OH)2 + additives) can be shaken to make a homogeneous dispersion that settles slowly - even without additives - over a period of hours. As the Mg(OH)2 settles and becomes more concentrated, it settles more slowly until after many hours or days, the dispersion settles to a somewhat stiff paste which can be tilted without flowing, but ...


2

The solidification of a $40$ % suspension of $\ce{Mg(OH)2}$ in water is probably due to the action of $\ce{CO2}$ from the air, which reacts with $\ce{Mg(OH)2}$ producing $\ce{MgCO3}$ which is insoluble in water. Remember that $58~ g$ $\ce{Mg(OH)2}$ produces $84~ g$ $\ce{MgCO3}$ and $174~ g$ lansfordite $\ce{MgCO3⋅5H2O}$, as described in the Handbook of ...


Top 50 recent answers are included