Sodium Hexametaphosphate Extra Pure
Sodium Hexametaphosphate Extra Pure is a white, odorless, water-soluble powder composed of condensed phosphate units. It serves as a powerful sequestrant, dispersing agent, and water softener with wide applications in water treatment, food processing, detergents, ceramics, and laboratory settings. Its ability to chelate metal ions and prevent scale formation makes it invaluable in industrial processes. The Extra Pure grade ensures suitability for high-spec analytical and food-grade applications. Proper storage in dry, sealed containers is essential to maintain its quality and effectiveness.
Sodium Hexametaphosphate Extra Pure
PRIMARY USES
Analytical Reagent & Laboratory Applications:
• Used as a sequestrant and dispersing agent in chemical analysis
• Acts as a buffering agent and stabilizer in titrations and complexometric analysis
• Utilized for controlling metal ion concentrations in laboratory experiments
Water Treatment:
• Employed to prevent scale formation and control corrosion in boiler water and cooling systems
• Functions as a water softener by sequestering calcium and magnesium ions
Food Industry:
• Used as a food additive (E452i) for sequestration, emulsification, and as a stabilizer in processed foods
• Improves texture, color retention, and shelf-life in processed meat, seafood, and dairy products
Detergent & Cleaning Industry:
• Acts as a builder and sequestrant in detergent formulations to enhance cleaning efficiency
• Helps soften water and prevent redeposition of dirt on fabrics
Ceramics & Paper Industry:
• Used to disperse clay and other minerals in ceramics and paper production to improve product quality
SECONDARY USES
Pharmaceutical Industry:
• Utilized as a stabilizer and dispersant in certain pharmaceutical formulations
Cosmetics & Personal Care:
• Employed as a stabilizer and chelating agent in cosmetic products to maintain formula integrity
Agricultural Applications:
• Used in some formulations for micronutrient delivery and soil conditioning
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Basic Identification Attributes
• Chemical Name: Sodium Hexametaphosphate
• CAS Number: 10124-56-8
• HS Code: 2835.39.00
• Molecular Formula: (NaPO3)6
• Synonyms:
- Calgon
- Graham's salt
- SHMP
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Physical & Chemical Properties
Physical State: Solid (white granular or powder)
• Color & Odor: White, odorless
• Melting Point: Decomposes above 628 °C
• Density: Approximately 2.54 g/cm³
• Solubility:
- Highly soluble in water
- Insoluble in alcohol and ether
• pH Level: Slightly alkaline in aqueous solution (pH 8-9)
• Vapor Pressure: Negligible
• Flash Point: Not applicable (non-flammable)
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Safety & Hazard Attributes
Hazard Class (GHS Classification):
- Causes serious eye irritation (Category 2A)
- May cause respiratory irritation
• NFPA Ratings: - Health: 2
- Flammability: 0
- Reactivity: 0
• Exposure Limits: - No specific OSHA PEL or ACGIH TLV established
• Reactivity: - Stable under normal conditions
- Reacts with strong acids releasing phosphoric acid vapors
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Storage & Handling Attributes
Storage Conditions:
- Store in a cool, dry, well-ventilated area
- Keep container tightly closed to avoid moisture absorption
• Incompatible Materials: - Strong acids, strong oxidizers
• Container Type: - Plastic or sealed metal drums
• Shelf Life: - Stable for several years if stored properly
• Special Handling Requirements: - Avoid dust formation
- Use protective gloves and goggles
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Regulatory & Compliance Attributes
Regulatory Status:
- Approved as a food additive (E452i) under regulated conditions
- Listed on REACH and EPA chemical inventories
• Transportation Restrictions: - Not classified as hazardous for transport
• Waste Disposal Method: - Dispose of in accordance with local environmental regulations
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Environmental & Health Impact
Ecotoxicity:
- Low toxicity to aquatic organisms
• Persistence in Environment: - Slowly biodegradable
• Carcinogenicity/Mutagenicity: - Not classified as carcinogenic or mutagenic
• Biodegradability: - Moderately biodegradable
SAFETY PRECAUTIONS
Personal Protective Equipment (PPE):
• Wear chemical-resistant gloves
• Use safety goggles or face shield
• Wear protective clothing
• Use dust mask or respirator if dust is generated
Handling:
• Avoid inhalation of dust
• Handle in a well-ventilated area
• Wash hands thoroughly after handling
Storage:
• Store in tightly sealed containers
• Protect from moisture and incompatible materials
FIRST AID MEASURES
Inhalation:
• Move to fresh air immediately
• Seek medical attention if breathing difficulties occur
Skin Contact:
• Wash thoroughly with soap and water
• Remove contaminated clothing
• Seek medical advice if irritation develops
Eye Contact:
• Rinse eyes with plenty of water for at least 15 minutes
• Seek medical attention promptly
Ingestion:
• Rinse mouth with water
• Do not induce vomiting unless directed by medical personnel
• Seek medical attention if symptoms appear
FIRE FIGHTING MEASURES
Flammability:
• Non-flammable solid
Extinguishing Media:
• Use water spray, foam, dry chemical, or CO₂
Hazardous Combustion Products:
• May emit toxic phosphorus oxides under fire conditions
Firefighter Protection:
• Use self-contained breathing apparatus (SCBA) and full protective gear