Анотація:
As a result of the made researches it is positioned, that the concentrated and diluted with
sulfuric, azotic, saline acids and as a mix of saline and azotic acids ("nitrohydrochloric acid") and solutions of oxyhydroxide of sodium and potassium do not render influence on cBN. At action of a melt of oxyhydroxide of sodium there is a decomposition cBN.