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.
2. Pour the melted butter into the milk. In a medium bowl, mix together 1/3 cup butter (melted) and 3/4 cup whole milk. Make sure you have let your butter cool before pouring it into the milk. 1  If you prefer to use milk with a lower fat content you'll need to add 1 tbsp of flour to help your cream thicken.. Try using skim milk and cornstarch. If you only drink skim milk, you can still use this as a basis for your heavy cream substitute. In this case, use one cup of milk and add 2 tablespoons of cornstarch or unflavored gelatin to allow the mixture to thicken.