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Sodium Hexametaphosphate (SHMP)
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.
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.
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
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
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Sodium Nitrate (25kg)
Sodium Nitrite
Sodium Persulfate (25kg)
Sodium Thiosulphate 25kg
Sulphuric Acid 98%
Triethanolamine
