Food With Phosphoric Acid

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Phosphoric acid

food with phosphoric acid Introduction:

Soluble in water, soluble in ethanol.Phosphoric acid is a common inorganic acid and a medium strong acid.Its acidity is weaker than strong acids such as sulfuric acid, hydrochloric acid and nitric acid, but stronger than weak acids such as acetic acid, boric acid and carbonic acid.When phosphoric acid reacts with sodium carbonate at different pH, different acid salts can be formed.

food with phosphoric acid Production method:

Slowly add the precipitant barium hydroxide to the sulfur reduction tank containing crude phosphoric acid, stir and heat to 95 ℃, and maintain for 20 minutes before placing it in the aging tank for about 26 days. The lower turbid liquid is filtered to recover phosphoric acid, and the upper clear liquid is heated to 85 ℃ and pumped to the top of the arsenic removal filling tower. H2S gas is introduced from the bottom of the tower. The excess exhaust gas is introduced into the NaOH Chemicalbook solution neutralization tank from the top of the tower. The phosphoric acid slurry with suspension blocks is discharged from the bottom of the tower, enters the coagulation tank, and is heated to 90 ℃. After that, it passes through the filtration tank, adjustment tank (maintaining a temperature of 80 ℃), and then enters the adsorption tank. The temperature of the adsorption tank is controlled at 80 ℃, and activated carbon and diatomaceous earth are added for stirring and adsorption for 1 hour. Finally, it enters the slurry tank and is filtered at 55 ℃ to obtain food grade phosphoric acid.

The pharmaceutical industry is used to manufacture sodium glycerophosphate, iron phosphate, etc., as well as zinc phosphate as a dental filling adhesive.

Used as a catalyst for the condensation of phenolic resins, and as a drying agent for the production of dyes and intermediates.

The printing industry is used to prepare cleaning solutions for wiping off stains on offset color printing plates.

It is also used to prepare matchstick stem impregnation solution.

The metallurgical industry is used to produce phosphate refractory mud and improve the service life of steelmaking furnaces. It is a coagulant for rubber slurry and a raw material for producing inorganic binders.

The paint industry uses it as a metal anti rust paint.

food with phosphoric acid use:

Wet process phosphoric acid is mainly used to manufacture various phosphates, such as ammonium phosphate, potassium dihydrogen phosphate, disodium hydrogen phosphate, trisodium phosphate, and condensed phosphates.

Refined phosphoric acid is used to produce calcium hydrogen phosphate for feed.

Used for phosphating treatment of metal surfaces, preparing electrolytic polishing solution and chemical polishing solution for polishing aluminum products.

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