Pyrophosphoric acid

Cas 2466-09-3

Pyrophosphoric acid Cas 2466-09-3

Chemical Properties Of Pyrophosphoric acid

Pyrophosphoric acid, MF: H₄O₇P₂, MW: 177.975, is a white crystalline powder or colorless viscous liquid. The pyrophosphate ion exhibits strong coordination properties. Excess P₂O₇⁴⁻ can dissolve insoluble pyrophosphates (e.g., Cu²⁺, Ag⁺, Zn²⁺, Mg²⁺, Ca²⁺, Sn²⁺) to form coordination ions such as [Cu(P₂O₇)₂] 6⁻, [Sn(P₂O₇)₂]⁶⁻, etc.

Product Description Of Pyrophosphoric acid

Item Specification
Melting point 61 °C
Boiling point N/A
Density 2.4±0.1 g/cm³
Acidity Constant (pKa) 0.99±0.10 (Predicted)
Refractive Index 1.560
Flash Point N/A
Solubility Freely soluble in water (exothermic, gradually hydrolyzes to phosphoric acid); soluble in ethanol, diethyl ether.

Product Application Of Pyrophosphoric acid

  1.  Pyrophosphoric acid is used as a food additive, such as a leavening agent, chelating agent, and acidity regulator; also used in beer brewing;
  2.  Pyrophosphoric acid serves as a complexing agent for electroplating metals like copper, nickel, and tin, and is also used for metal degreasing and rust removal;
  3.  As a scale inhibitor and corrosion inhibitor, diphosphoric acid chelates Ca²⁺ and Mg²⁺ in water for industrial circulating water and boiler feedwater;
  4.  Chemical and materials fields:
    – As a catalyst, diphosphoric acid is used in organic synthesis reactions (e.g., esterification, polymerization);
    – Used in preparing pyrophosphates as detergent auxiliaries and flame retardant raw materials
    – Used as a fluxing agent in ceramic glazes to enhance gloss and flow properties
  5.  Other Applications:
    – Combined with surfactants to enhance cleaning efficacy (especially in hard water environments)
    – Used as an intermediate in certain pharmaceutical syntheses or as an additive in dental materials
Packaging Method Of Pyrophosphoric acid
Product packaging bags
Bagged product shipping diagram 1
Cardboard barrel
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Jinan Jinbang Chemical Co., Ltd., strategically located within the New Materials Industrial Park in Tianqiao District, Jinan City, Shandong Province, stands as a prominent chemical innovator since its establishment in 2015. Operating from a modern, expansive 37,500 m² manufacturing facility, we are dedicated to the research & development, production, and global distribution of high-performance chemical solutions.

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