Salt Dampening Problems Solved.--The age old problem of salt's dampening and caking in humid weather has finally been alleviated by the makers of Diamond Crystal Weather-pruf Salt, a proJuct of General Foods. Technicians and scientists achieved this after more than 20 years of experimentation by adding calcium silicate to the pure salt. The addition of this chemical filler makes a truly moisture resistant product.
Because calcium silicate absorbs moisture at a much lower relative humidity than the salt, a great percentage of the moisture which would normally be taken up by the salt is absorbed by the chemical, leaving the salt dry and freeflowing. This chemical cannot, under every condition, absorb all the moisture before it has a chance to act upon the salt. However, the moisture which might get through will combine with the salt to form a brine and the calcium silicate will, in turn, absorb most of this brine, leaving the remaining salt free-flowing.
Calcium silicate is insoluble in water and nontoxic. Its use in a food product has absolutely no harmful effects as attested to by the fact that iodized Weather-pruf salt has been granted the American Medical Association Seal of Approval.