The majority of STPP is consumed as a component of commercial detergents.

STPP is a preservative for seafood, meats, poultry, and animal feeds.

Other uses (hundreds of thousands of tons/year) include "ceramics, leather tanning(as masking agent and synthetic tanning agent - SYNTAN), anticaking, setting retarders, flame retardants, paper, etc.

Phosphoric Acid may be used to produce variety of Phosphates, electrolyte treatment liquids or chemical treatment liquids, refractory mortar with phosphoric acid and inorganic coheretant. Phosporic acid is also used as a catalyst, drying agent and cleaner.

Food, Emulsifier for processed cheese.

Baking agent for cereals. Buffer for processed foods.

Added in meat such as chopper, brines; sea food such asfrozen shrimp, fish, surimi, frozen cephalopod, shellfish. Dairy and baked food etc, production process.