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Product Name: Sodium Trimetaphosphate
Chemical Formula: Na3P3O9
Synonyms: Trisodium Trimetaphosphate, Sodium Cyclotriphosphate
CAS Number: 7785-84-4
Molecular Weight: 305.89 g/mol
Recommended Use: Food additive, water treatment, ceramics, textile applications
Supplier: Refer to product packaging for details
Emergency Contact: Refer to local and national emergency numbers
GHS Classification: Not classified as hazardous under GHS
Hazard Statements: Dust from product may irritate eyes, skin, or respiratory tract
Signal Word: None required
Pictograms: No pictogram required
Precautionary Statements: Prevent dust formation. Use mask, goggles, and gloves where appropriate.
Physical Hazards: Can form dust clouds in handling
Health Hazards: Irritation to eyes or mucous membranes in sensitive individuals
Environmental Hazards: Large spills may affect aquatic life; prevent entry to waterways
Chemical Name: Sodium Trimetaphosphate
Content (wt%): 98–100%
Impurities: Trace phosphates, moisture less than 2%
Other Additives: None reported for technical and food grades
Inhalation: Remove person to fresh air. Seek medical attention for respiratory symptoms.
Skin Contact: Wash area thoroughly with soap and water. Remove contaminated clothing.
Eye Contact: Rinse with water for at least 15 minutes, lifting eyelids occasionally. Seek care if irritation persists.
Ingestion: Rinse mouth, offer small amounts of water. Avoid vomiting unless recommended by a medical professional. Contact poison control if large quantity ingested.
Acute Symptoms: Cough, sneezing, mild skin or eye irritation
Delayed Effects: No significant chronic outcomes known from typical exposure
Suitable Extinguishing Media: Water spray, foam, dry chemical, carbon dioxide
Unsuitable Media: None identified; does not react with standard extinguishers
Hazardous Decomposition: Phosphorus oxides, sodium oxides when heated strongly
Special Protective Equipment: Firefighters should use full protective gear and self-contained breathing apparatus
Fire/Explosion Hazards: Product does not burn, may release irritating fumes when strongly heated
General Guidance: Prevent runoff from entering drains or watercourses; cool containers with water spray
Personal Precautions: Avoid breathing dust; wear mask and goggles. Use gloves to protect skin.
Environmental Precautions: Avoid dispersal into soil, drains, and water bodies.
Methods for Cleanup: Sweep up and place in suitable labeled container for disposal. Clean residues with water if necessary, ensuring it’s contained.
Spill Response: Ventilate area and wash down after product collection. Prevent dust generation as much as possible.
Decontamination Procedures: Rinse equipment and tools thoroughly after cleanup.
Handling: Avoid raising dust. Work in ventilated area. Wear appropriate PPE such as gloves, mask, and goggles.
Storage Conditions: Store in original containers, tightly closed, dry, and well-ventilated place. Keep away from moisture and incompatible substances (strong acids).
Storage Temperature: Ambient, away from direct sunlight and humid environments.
Incompatibilities: Acids, strong oxidizers
Packaging Materials: Use containers resistant to alkaline materials. Polyethylene bags or steel drums with inner liners are common.
Occupational Exposure Limits: No established OSHA or ACGIH exposure limits for sodium trimetaphosphate as a whole
Engineering Controls: Local exhaust ventilation recommended in dusty conditions
Personal Protective Equipment: Gloves, chemical safety goggles, dust mask or respirator in poorly ventilated areas
Hygiene Measures: Wash hands thoroughly after handling and before eating or drinking. Do not wear contaminated clothing.
Environmental Exposure Controls: Prevent material from entering surface waters and sewers.
Appearance: White crystalline powder or granules
Odor: Odorless
Odor Threshold: Not applicable
pH: 6.0–9.0 (1% solution at 25°C)
Melting Point: Decomposes above 625°C, does not melt without decomposition
Boiling Point: Not applicable
Solubility: Soluble in water (about 22 g/100 ml at 25°C)
Vapor Pressure: Not volatile
Density: Approx. 2.5–2.6 g/cm3
Partition Coefficient: Not relevant (inorganic salt)
Evaporation Rate: Not applicable
Flash Point: Not flammable
Auto-ignition Temperature: Not self-igniting
Explosive Properties: No explosive properties
Viscosity: Not applicable
Chemical Stability: Stable under normal storage and handling conditions
Conditions to Avoid: Humidity, high temperatures leading to decomposition
Incompatible Materials: Strong acids, ammonium salts, and strong oxidizing agents
Hazardous Decomposition Products: Sodium oxides, phosphorus oxides under high heat or acidic conditions
Polymerization: Will not occur
Acute Toxicity: Oral LD50 in rats > 2,000 mg/kg (low toxicity)
Skin Sensitization: Not classified as a skin sensitizer
Inhalation Effects: Inhalation of dust may cause mild irritation to respiratory tract
Eye Effects: Direct contact with dust could lead to irritation and redness
Chronic Effects: No available evidence for chronic toxic effects in humans
Carcinogenicity: None reported by IARC, NTP, or OSHA for sodium trimetaphosphate
Mutagenicity: Not listed as mutagenic
Reproductive Toxicity: No evidence from available data
Ecotoxicity: High concentrations may impact water balance in aquatic organisms or stimulate algal growth
Aquatic Toxicity: Practically non-toxic at relevant concentrations for drinking water or process use
Persistence and Degradability: Inorganic compound, does not degrade as organic chemicals do; ultimate mineralization in nature
Bioaccumulative Potential: Not expected to bioaccumulate
Mobility in Soil: Mobile in soil; moves with water
Other Adverse Effects: Large spills may temporarily alter natural phosphate balance in bodies of water
Disposal Methods: Dispose in accordance with local, regional, and national regulations. Landfill in permitted site or recycle through specialized treatment if facility available
Container Disposal: Rinse thoroughly before recycling or disposal
Special Precautions: Do not allow large amounts to enter environment or watercourses. Avoid dust release during disposal.
UN Number: Not regulated for transport
Proper Shipping Name: Not assigned
Hazard Class: Not classified as hazardous material
Packing Group: Not assigned
Marine Transport: Prevent significant releases to ship bilge or marine environments
Special Precautions for Transport: Avoid packaging which permits moisture ingress; ensure containers remain sealed and intact during shipping
TSCA: Listed on US TSCA Inventory
EINECS: 232-088-3, listed
DSL (Canada): Listed
Other Regulations: Compliant with relevant food and chemical safety laws in most jurisdictions when used for intended purpose
Labeling Requirements: Not classified as hazardous for labeling under most global standards, but must follow food or technical grade labeling standards as applicable
Country-Specific Regulations: Manufacturers and importers should verify compliance with local chemical, environmental, and worker safety laws
