ORGANIC DEPOLARIZED PRIMARY BATTERIES

A tentative specification for a carbon black suitable for use with m-dinitrobenzene is given. The more efficient reduction of aromatic nitro groups by certain metals is examined. Electroless nickel solutions did not deposit nickel on Columbian HR-1670 carbon black. The low solubility of m-dinitrobenzene in water is changed only slightly by MgBr2, but is affected more by Mg(Cl104)2 and, especially, by reduction products of m-dinitrobenzene. A new titration method for measuring pore volume was tried and found unsuitable with carbon blacks. (Author)