Phosphonate salts are the result of deprotonation of phosphonic acids, which are diprotic acids: Phosphonate esters are the result of condensation of phosphonic acids with alcohols. Several methods exist for the preparation of phosphonic acids and their salts.
1 Stir in the tomato sauce, tomato paste, vinegar, diced tomatoes, and brown sugar. Season with chili powder, Italian seasoning, and salt. Bring to a boil, reduce heat to low, and simmer 1 hour.  Mix the cornstarch and water, and stir into the salsa to thicken. Transfer salsa to sterilized jars, leaving 1/2 inch headroom, and seal. Process jars in a boiling water bath 15 minutes. Store unsealed jars in the refrigerator.
Homemade Freezer Salsa Ingredients. 1  5 lbs tomatoes (about 3 or 4 medium-size tomatoes is a pound). 2  2 c. onions. 3  1 c. green pepper. 4  1/4 c. jalapeno pepper. 5  3 tsp. canning salt. 6  1/2 to 1 tbsp. of your favorite dry hot sauce mix (I use Mexican Village, a local brand).