Patent ID: 8198228

Claim:
A solidification matrix consisting essentially of: (a) a biodegradable aminocarboxylate, wherein the biodegradable aminocarboxylate is selected from the group consisting of: disodium ethanoldiglycine solution, iminodisuccinic acid sodium salt solution, L-glutamic acid solution, diacetic acid tetrasodium salt solution, trisodiumethylenediamine disuccinate solution, and tetrasodium 3-hydroxy-2,2′-iminodisuccinate solution; (b) sodium carbonate; and (c) water; (d) wherein the solidification matrix is a hydrate solid; (e) wherein if heated at a temperature of 120 degrees Fahrenheit, the solidification matrix is dimensionally stable and has a growth exponent of less than 2%; and (f) wherein the solidification matrix comprises less than about 0.5% by weight phosphorus-containing compounds.