Industrial-Grade Phosphate

Industrial-grade sodium phosphate salts (such as sodium tripolyphosphate, sodium hexametaphosphate, and trisodium phosphate) have a wide range of applications across various industries. Here are some of their primary uses:

  1. Detergents and Cleaners: Act as water softeners in detergents, reducing water hardness and improving washing efficiency. They are also key ingredients in industrial cleaners for removing grease and grime.
  2. Water Treatment: Utilized as scale inhibitors and corrosion inhibitors in water treatment, preventing scaling and corrosion in pipes and equipment.
  3. Textiles and Paper: Used as auxiliaries in dyeing and printing in the textile industry, and as dispersants and bleaching aids in the paper industry.
  4. Metal Treatment: Employed in metal surface treatment as rust removers and metal cleaners, enhancing the adhesion properties of metal surfaces.
  5. Ceramics and Glass Manufacturing: Serve as fluxing agents, lowering melting points and increasing the mechanical strength and transparency of products.
  6. Pharmaceutical and Medical: Used in the production of certain drugs and pharmaceutical intermediates.
  7. Building Materials: Added to concrete and gypsum to improve the strength and durability of these materials.

The versatility of industrial-grade sodium phosphate salts makes them indispensable chemicals in many fields.

Showing all 7 results

  • Disodium Phosphate

    Molecular Formula: Na₂HPO₄
    Molecular Weight: 141.96
    CAS Number: 7558-79-4
    EINECS Number: 231-448-7
    Customs Code: 28352200
    Alias: DSP

    Characteristics:

    • Anhydrous disodium hydrogen phosphate is a white powder
    • Relative density: 1.52
    • Hygroscopic
    • Aqueous solution is weakly alkaline
    • Easily soluble in water, insoluble in ethanol
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  • Monosodium phosphate

    Molecular Formula: NaH₂PO₄
    Molecular Weight: 119.959
    CAS Number: 7558-80-7
    Customs Code: 28352200
    Alias: MSP

    Characteristics:

    • Melting point: 60°C
    • Easily soluble in water, insoluble in ethanol
    • Below 100°C, it dissolves in crystalline water to form a monohydrate
    • At 100°C, it loses its crystalline water to become anhydrous; further heating converts it to sodium metaphosphate
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  • Sodium Hexametaphosphate

    Molecular Formula: (NaPO3)6
    Molecular Weight: 611.77
    CAS No.: 10124-56-8
    HS Code: 28353919
    Aliases: Sodium metaphosphate, Graham’s salt, hexametaphosphate, SHMP

    Characteristics: With a melting point of 616°C, the compound is highly soluble in water but insoluble in organic solvents. Its aqueous solution exhibits an acidic reaction and demonstrates strong hygroscopic properties, gradually absorbing moisture from the air to form a viscous gel. It effectively forms soluble chelates with metal ions such as Ca, Ba, Mg, Cu, Fe, making it an exceptional water treatment agent.

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  • Sodium Trimetaphosphate

    Molecular Formula: Na₃(PO₃)₃
    Molecular Weight: 305.89
    CAS Number: 7785-84-4
    Customs Code: 28353990
    Alias: STMP

    Characteristics:

    • Melting Point: 627.6°C
    • Easily soluble in water
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  • Sodium Tripolyphosphate

    Molecular Formula: Na5P3O10
    Molecular Weight: 367.86
    CAS Number: 7758-29-4
    Alias : STPP
    Customs Codes:28353190

    Characteristics:

    • Melting point: 622°C
    • Easily soluble in water, with aqueous solutions being alkaline
    • Gradually hydrolyzes into orthophosphoric acid in water
    • Has a good ability to complex with metal ions
    • Can chelate with calcium, magnesium, iron, and other metal ions to form soluble complexes
    • Can soften hard water
    • As an inorganic surfactant, it has some properties of organic surfactants
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  • Tetrasodium pyrophosphate

    Molecular Formula: Na₄P₂O₇
    Molecular Weight: 265.9
    CAS Number: 7722-88-5
    EINECS Number: 231-767-1
    H.S. Code: 28353990
    Alias: Tetrasodium Pyrophosphate, Sodium Pyrophosphate, TSPP

    Characteristics:

    • White powder
    • Soluble in water, insoluble in alcohol
    • Relative density: 2.45
    • Melting point: 890°C
    • Aqueous solution is weakly alkaline and hygroscopic in air
    • Aqueous solution is stable at 70°C, hydrolyzes to disodium phosphate upon boiling
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  • Trisodium Phosphate

    Molecular Formula: Na₃PO₄·12H₂O
    Molecular Weight: 380.12
    CAS Number: 10101-89-0
    Customs Code: 28352910
    Alias: TSP

    Characteristics:

    • Melting Point: 75°C
    • Appearance: White or colorless granular crystals
    • Hygroscopic, easily soluble in water, insoluble in organic solvents
    • Aqueous solution is alkaline
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