Hydroxy methionine analog formulations suitable for specialty chemical applications

Abstract

Formulations comprising hydroxy methionine analog and having low levels of sulfate ions and bisulfate salts, processes for preparing the formulations, compositions comprising the formulations, and methods of using the formulations.

What is claimed is: 
     
         1 . A composition comprising a metal chelate comprising at least one metal ion and at least one compound of Formula (I), 5% or less by weight of water, and 2700 ppm or less by weight of sulfate ion: 
       
         
           
           
               
               
           
         
         wherein:
 R 1  is methyl or ethyl; 
 k is an integer from 1 to 10; and 
 n is an integer of 1 or 2. 
 
       
     
     
         2 . The composition of  claim 1 , wherein the at least one metal ion is calcium, chromium, cobalt, copper, iron, manganese, silver, sodium, zinc, or a combination thereof. 
     
     
         3 . The composition of  claim 1 , wherein the at least one compound of Formula (I) and the at least one metal ion are present at a ratio of 1:1, 2:1, or 3:1. 
     
     
         4 . The composition of  claim 1 , wherein R 1  is methyl, k is 1, and n is 2. 
     
     
         5 . The composition of  claim 4 , wherein the at least one compound of Formula (I) and the at least one metal ion are present at a ratio of 2:1. 
     
     
         6 . The composition of  claim 5 , wherein the metal ion is calcium, copper, manganese, or zinc. 
     
     
         7 . The composition of  claim 6 , wherein the metal ion is calcium. 
     
     
         8 . The composition of  claim 1 , which comprises 2% or less by weight of water. 
     
     
         9 . The composition of  claim 1 , which comprises 1000 ppm or less by weight of sulfate ion. 
     
     
         10 . The composition of  claim 1 , which comprises 500 ppm or less by weight of bisulfate ion. 
     
     
         11 . The composition of  claim 1 , which comprises 200 ppm or less by weight of bisulfate ion. 
     
     
         12 . The composition of  claim 1 , wherein a 50 wt % solution has an American Public Health Association (APHA) color value of 200 or less. 
     
     
         13 . The composition of  claim 12 , wherein the APHA color value is 500 or less after heating at 140° C. for up to 12 hours. 
     
     
         14 . The composition of  claim 1 , wherein a 15 wt % solution has a pH value of at least 1.3. 
     
     
         15 . The composition of  claim 1 , wherein the composition is a dry granulate or a powder. 
     
     
         16 . The composition of  claim 7 , which comprises 2% or less by weight of water, 1000 ppm or less by weight of sulfate ion, and 200 ppm or less by weight of bisulfate ion.