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Phosphoric Acid
    Publish time 2025-07-04 13:37    
Phosphoric Acid

Technical Grade/Food Grade/Electronic Grade      

     

Molecular Formula: H3PO4                                                                               Molecular Weight: 97.99

CAS No.:7664-38-2                                                                                             EINECS No.：231-633-2

UN No.: 1805                                                                                                       Hazard Class: 8.1

Properties: Melting Point is 42.35°C，Density is 1.685 g/cm³ when under 25°C ，Miscible with water and alcohols in all proportions.

Applications:

1. Raw material for phosphate fertilizers: reacts with ammonia to produce ammonium phosphates (e.g., DAP, MAP) or with phosphate rock to manufacture superphosphate. It supplies essential phosphorus for plant growth, promoting root development and fruit maturation.

2.Metal Surface Treatment: Phosphating agent forms phosphate conversion coatings on steel surfaces to enhance corrosion resistance and paint adhesion (essential in automotive/shipbuilding). Polishing agent:It is used in electrolytic polishing of aluminum (85% H₃PO₄ + H₂SO₄ mixture).Corrosion/scale inhibitor: Prevents pipeline scaling by chelating Ca²⁺/Mg²⁺ ions.

3.Food Additive

Acidity regulator: Source of tartness in cola beverages (0.05%-0.1% concentration).

Emulsification aid: Promotes uniform protein-fat dispersion in cheese processing.

Flame retardant production: Synthesizes organophosphorus flame retardants (e.g., TCPP, TDCPP) for polyurethane foams.

Packaging & Storage: 35kg drum or 1600kg IBC tank; store at cool, dry and well ventilated place.

Technical Specifications: 

Inspection Item

Specification Standard(TG)

Specification Standard(FG)

Specification Standard(EG)

Main content(H3PO4)% ≥

85.0  

85.0

85.0

P2O5                         % ≥

61.5

61.5-62.1

/

Sulphate                   ≤ ppm

100

50

10

Cl                              ≤ ppm

50

30

1

F                               ≤ ppm

200

10

/

H3PO3                     ≤ ppm

/

120

80

Heavy Metal (Pb)     ≤ ppm

10

5

4

Pb                             ≤ ppm

/

3

/

As                             ≤ ppm

1

0.5

0.5

Ca                            ≤ ppm

20

/

0.5

Cu                            ≤ ppm

/

1

0.5

Al                             ≤ ppm

/

5

0.5

K                              ≤ ppm

/

/

0.5

Mg                           ≤ ppm

20

/

0.5

Fe                            ≤ ppm

20

10

0.5

Hg                            ≤ ppm

/

1

/

Sb                            ≤ ppm

/

10

3

Na                            ≤ ppm

/

/

0.5

Pb                            ≤ ppm

/

2

0.5

Cd                            ≤ ppm

/

2

0.5



















Cr                             ≤ ppm

/

/

0.5

Co                            ≤ ppm

/

/

0.5

Ni                             ≤ ppm

/

/

0.5

Nitrate                      ≤ ppm


5

/

C                             %≤

/

0.006

/

Color(Hazen Units)  ≤

/

20

5

Volatile Acid             ≤ ppm

/

10

/

Specific Gravity

/

1.685

1.691

Appearance

Colorless Liquid

Colorless Liquid

Colorless Liquid

















For additional product information, please contact us via email info@aicheme.com