Product Name: Tetrasodium Pyrophosphate
Chemical Formula: Na4P2O7
CAS Number: 7722-88-5
Synonyms: Sodium pyrophosphate, TSPP
Recommended Uses: Industrial detergents, food additives (emulsifier, buffering agent), water treatment, ceramics production, metal cleaning
Supplier Information: Business name, full address, phone, emergency contact (fill in according to the supplier’s identity)
Classification: Eye irritation, Skin irritation, May cause respiratory tract irritation
Signal Word: Warning
Hazard Statements: Causes eye irritation, causes mild skin irritation, may cause upper respiratory tract irritation on excessive dust exposure
Pictograms: Exclamation mark (irritant)
Precautionary Statements: Avoid dust formation, wash thoroughly after handling, use in a well-ventilated area, avoid eye and prolonged skin contact
Acute Hazards: Irritation to eyes, nose, throat; sneezing, coughing on inhalation
Chronic Hazards: Prolonged skin exposure may result in dryness or slight inflammation
Chemical Name: Tetrasodium Pyrophosphate
Synonyms: Sodium pyrophosphate
Concentration: 98-100% by weight
Impurities: May contain trace amounts of sodium phosphate forms, otherwise minimal by-product content
Molecular Weight: 265.9 g/mol
Inhalation: Move person to fresh air; remove from exposure area if irritation or symptoms occur; seek medical attention if symptoms persist
Eye Contact: Promptly flush eyes with plenty of clean water for at least 15 minutes; remove contact lenses if present and easy to do; consult physician if irritation continues
Skin Contact: Wash skin thoroughly with soap and water; use moisturizer for dryness; seek medical advice if skin irritation develops or persists
Ingestion: Rinse mouth with water; give plenty to drink; do not induce vomiting; seek medical help if symptoms appear or are severe
Most Important Symptoms: Redness, dryness, eye watering, sneezing, throat irritation
Suitable Extinguishing Media: Water spray, dry chemical powder, carbon dioxide, foam
Unsuitable Media: No known substances to avoid for extinguishing
Special Hazards: Product is non-flammable; decomposition above 300°C may generate sodium oxide or phosphorus oxides fumes; avoid inhalation of fumes
Protective Equipment: Wear self-contained breathing apparatus and protective clothing
Specific Firefighting Methods: Cool exposed containers with water spray; prevent fire runoff into drains or watercourses if possible
Personal Precautions: Avoid breathing dust; wear dust mask, safety goggles, and gloves
Spill Response: Ventilate area; sweep up and place in suitable container for proper disposal; avoid raising dust
Environmental Precautions: Prevent spillage from entering drains, waterways, or soil; notify authorities if contamination occurs
Clean-up Methods: Wash spill site after material pick-up is complete; use minimal water to avoid dissolved pollution
Handling: Minimize dust generation; use with adequate ventilation; avoid contact with skin or eyes; do not eat, drink, or smoke during use
Storage Conditions: Store in tightly sealed containers in cool, dry, well-ventilated area; keep away from incompatible chemicals (strong acids, oxidizers)
Storage Temperature: Ambient recommended; protect from moisture
Packaging Materials: Use material compatible with alkaline salts (plastic, glass, stainless steel)
Engineering Controls: Adequate local ventilation; general exhaust for larger handling
Exposure Limits: No established OSHA, ACGIH, or NIOSH limits, but keep workplace exposures low as possible
Personal Protection: Protective gloves (nitrile or rubber), safety goggles, dust mask or respirator (P2 or N95), long-sleeved clothing
Hygienic Practices: Wash hands after handling; avoid carrying dust away from work area; change contaminated clothing
Physical State: Powder or granular solid
Color: White
Odor: Odorless
pH (1% sol.): 9.9-10.7
Melting Point: >600°C
Boiling Point: Not applicable—decomposes
Solubility in Water: 7 g/100 mL at 25°C
Density: 2.53 g/cm³
Vapor Pressure: Not relevant
Known Incompatibilities: Strong acids and oxidizers
Chemical Stability: Stable under normal storage, dry conditions
Reactivity: Reacts with strong acids to form phosphoric acid and sodium salts; possible violent reaction with strong oxidizers
Conditions to Avoid: Damp or humid storage, strong heat sources, exposure to acids
Decomposition Products: Sodium oxides, phosphorus oxides (if burned)
Routes of Exposure: Inhalation, ingestion, skin, and eye contact
Acute Toxicity: Oral LD50 (rat): >3,000 mg/kg—low toxicity
Irritation: Causes mild skin and moderate eye irritation; dust inhalation may trigger upper airway irritation
Sensitization: No evidence of skin sensitization
Chronic Effects: Repeated or prolonged exposure could worsen dryness or irritation; no reported mutagenic, carcinogenic, or reproductive toxicity
Medical Conditions Aggravated By Exposure: Pre-existing skin, respiratory, or eye conditions
Ecotoxicity: Short-term harm to aquatic organisms possible at high concentrations due to phosphate content promoting eutrophication
Persistence and Degradability: Inorganic—does not degrade, but disperses in environment
Bioaccumulation Potential: Bioaccumulation not expected
Mobility in Soil: Dissolves in water, migrates in soil as phosphate
Water Hazard Class: 1 (low hazard) under some regulations
Waste Treatment Methods: Dispose in accordance with local, regional, federal requirements
Waste Code: Not considered hazardous waste under US RCRA
Disposal of Containers: Triple-rinse and recycle or landfill as allowed by regulations
Precautions: Prevent release into surface water; avoid spillage into sewers or environment
UN Number: Not regulated
DOT Classification: Not classified as dangerous good
Labels Required: None for transport
Packaging Requirements: Leak-proof, moisture-resistant containers recommended
Special Transport Precautions: Ship upright, avoid breakage or damage to packaging during transport
US TSCA: Listed
EU REACH: Pre-registered, registered
SARA Title III: Not classified
WHMIS (Canada): Not controlled
California Prop 65: Not listed
Other Regulations: Local regulations may restrict phosphate discharges due to water quality concerns; consult regional environmental authorities for guidance
