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.
Preparation. 1. Heat 1 tablespoon oil in a large skillet over medium-high heat; add onion, bell pepper, and salt, and cook 3 minutes. Add garlic, cumin, and chili powder, and cook 1 minute or until vegetables are crisp-tender.Remove from heat, and stir in 2 tablespoons lime juice and 2 tablespoons cilantro. 2.reparation. 1. Heat 1 tablespoon oil in a large skillet over medium-high heat; add onion, bell pepper, and salt, and cook 3 minutes. Add garlic, cumin, and chili powder, and cook 1 minute or until vegetables are crisp-tender.