Sodium Hexametaphosphate (SHMP)

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Sodium Hexametaphosphate (SHMP) is a white, granular or powdery inorganic compound composed of sodium and metaphosphoric acid polymers. It is highly soluble in water and acts as an effective sequestrant, dispersing agent, and water softener. SHMP is widely used across various industries including food processing, water treatment, detergents, ceramics, and metallurgy. It helps control hardness, prevent scale formation, and stabilize formulations, making it valuable in both industrial and consumer applications.

Description

Uses

Primary Uses 

  • Water Treatment
    • Acts as a sequestrant and dispersant to prevent scale and corrosion in boiler water and cooling systems.
    • Used in municipal and industrial water treatment to control hardness and remove heavy metals.
  • Food Industry
    • Used as a food additive (E452i), functioning as an emulsifier, sequestrant, and texturizer in processed foods such as cheese, meat products, seafood, and beverages.
    • Improves texture, moisture retention, and shelf life in various food products.
  • Detergents and Cleaning Products
    • Incorporated in detergents and cleaning agents as a water softener and dispersant to enhance cleaning efficiency by preventing mineral deposits.
    • Used in both household and industrial cleaning formulations.
  • Ceramics and Paints
    • Used as a deflocculant and dispersing agent in ceramic slip formulations to improve flow and reduce viscosity.
    • Acts as a dispersant in paints and coatings for better pigment distribution.
  • Metallurgy and Metal Treatment
    • Employed in metal surface treatment processes, such as cleaning and passivation, to prevent scale formation and improve metal finish.
    • Used in electroplating baths to stabilize metal ions.

Secondary Uses

  • Pharmaceuticals
    • Used as a dispersing agent in pharmaceutical formulations and oral care products.
  • Oil and Gas Industry
    • Applied in drilling fluids as a dispersant and scale inhibitor.
  • Textile Industry
    • Utilized as a dispersing and anti-scaling agent in dyeing and finishing processes.
  • Laboratory Uses
    • Used in chemical analysis and as a reagent for complexometric titrations.
PRODUCT KEY FEATURES

Basic Identification Attributes

  • Chemical Name (IUPAC): Sodium polyphosphate (primarily hexametaphosphate)
  • Common/Trade Name: Sodium Hexametaphosphate (SHMP)
  • CAS Number: 10124-56-8
  • HS Code: 2835.39
  • Synonyms: Calgon, Glassy sodium phosphate, Metaphosphate

Physical & Chemical Properties

  • Physical State: Solid (granular or powder)
  • Color & Odor: White; odorless
  • Solubility: Highly soluble in water
  • pH: Approximately 9-11 (1% aqueous solution)
  • Density: Approx. 2.53 g/cm³

 

Safety & Hazard Attributes

  • GHS Classification: Generally low hazard; may cause irritation on contact with eyes or skin
  • Toxicity: Low toxicity; safe when handled properly
  • Exposure Limits: Use standard industrial hygiene practices

 

Storage & Handling Attributes

  • Storage Conditions: Store in a cool, dry, well-ventilated place away from moisture and incompatible materials
  • Container Type: Supplied in sealed bags or drums (typically 25kg or bulk)
  • Shelf Life: Stable if stored correctly
  • Handling Precautions: Avoid dust formation and inhalation; use protective equipment as needed
  • Storage Measures: Keep containers tightly closed and stored in a dry environment

 

Regulatory & Compliance Attributes

  • Complies with food additive regulations (e.g., FDA, EU E452i) for use in food products
  • Meets industrial chemical standards (REACH, OSHA)
  • Manufactured under GMP and ISO quality systems

 

Environmental & Health Impact

  • Biodegradability: Readily biodegradable; minimal environmental persistence
  • Ecotoxicity: Low toxicity to aquatic life at typical use concentrations
  • Bioaccumulation: Not expected to bioaccumulate
SAFETY HANDLING PRECAUTIONS
  • PPE Required: Gloves, goggles, and dust mask recommended when handling powder
  • Handling Guidelines: Avoid inhalation of dust; ensure good ventilation
  • Storage Measures: Store away from acids and moisture to prevent hydrolysis

 

First Aid Measures

  • Inhalation: Move to fresh air; seek medical attention if irritation occurs
  • Skin Contact: Wash with soap and water; seek medical help if irritation develops
  • Eye Contact: Flush immediately with water for at least 15 minutes; obtain medical attention
  • Ingestion: Rinse mouth; do not induce vomiting; seek medical advice if necessary

 

Firefighting Measures

  • Fire Hazards: Non-flammable
  • Extinguishing Media: Use water spray, foam, dry chemical, or CO₂ for surrounding fires
  • Special Precautions: Wear protective gear to avoid dust inhalation
  • Hazardous Combustion Products: None known