prov:value
| - wherein each Z is independently H, a metal cation selected from the group consisting of Na, K, Li, Ca, Ba, Sr, Mg, Mn, Al, Cu, and B, or an organic cation selected from the group consisting of NH4 +, NR4 +, and PR4 +, where R is an organic group, and m and n are integers representing repeating methylene units where m+n>1,
|