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Phosphoric Acid

CAS # 7664-38-2

Phosphoric acid is one of the food additives, used in food as a sour agent, yeast nutrition.
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Introduction

Phosphoric acid is mainly used in the manufacture of various phosphate, such as ammonium phosphate, potassium dihydrogen phosphate, disodium hydrogen phosphate, trisodium phosphate, etc and condensation phosphate class.


ITEMS UNIT SPECIFICATIONS ANALYSIS RESULT DETERMINATION
Assay as(H3PO4) (%) % ≥85 85.2 PASS
Arsenic as As % ≤0.00005 0.00002 PASS
FLUORIDE AS F % ≤0.001 0.0002 PASS
H3PO3 % ≤0.012 0.007 PASS
HEAVY METAL AS Pb % ≤0.0005 0.0003 PASS
COLOR 10 10

Functions and Applications

1.  Food-grade phosphoric acid (additive E338) is used to acidify foods and beverages such as various colas. It provides a tangy or sour taste.
2.  Phosphoric acid may be used to remove rust by direct application to rusted iron, steel tools, or other surfaces.
3.  Phosphoric acid is used in dentistry and orthodontics as an etching solution, to clean and roughen the surfaces of teeth where dental appliances or fillings will be placed.
4.  As an additive to stabilize acidic aqueous solutions within a wanted and specified pH range
5.  As a dispersing agent in detergents and leather treatment
6.  As a pH adjuster in cosmetics and skin-care products

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