Investigations on Metaphosphate of High Molecular Weight Isolated from Aspergillus niger.

Abstract
A water-soluble, non-dialyzable metaphosphate with a molecular wt. of approx. 6000-7000 was isolated from the mold. The sedimentation constant was between 2.2 and 2.6 s; the diffusion constant was between 13 and 19 x 10-7 sq. cm./sec. and the partial specific volume was 0.32. Electro-phoretic mobilities at 0.25% concn. were consistent with that of the synthetic polymetaphosphate.