Product Name: Sodium Acid Pyrophosphate (Food Grade SAPP)
Chemical Name: Disodium dihydrogen diphosphate
Synonyms: Disodium pyrophosphate, SAPP
CAS Number: 7758-16-9
EC Number: 231-835-0
Molecular Formula: Na2H2P2O7
Recommended Use: Used in the food industry as a leavening agent or chelating agent
Supplier Information: Manufacturer name, address, emergency phone, business contact details
Classification: Not classified as hazardous under GHS regulations for food grade material
Main Health Hazards: Dust may irritate eyes, skin, or respiratory tract. Prolonged or repeated exposure could cause irritation. Not considered a carcinogen, mutagen, or reproductive toxin
Label Elements: Avoid breathing dust, prevent contact with skin and eyes
Signal Word: None required for food grade, general vigilance advised
Precautionary Statements: Use proper protective equipment when handling. Wash hands thoroughly after handling. Do not eat, drink, or smoke in handling area. Store away from incompatible substances like strong acids
Chemical Identity: Sodium Acid Pyrophosphate
Concentration: ≥95%
Impurities: Possible trace amounts of orthophosphates and metal oxides, impurities generally very low
Other Ingredients: None
Note: Substance is food grade and meets regulatory standards for use in foods
Inhalation: Move person to fresh air. Blow nose to remove dust. Seek medical advice if symptoms persist
Eye Contact: Rinse with water for several minutes, remove contact lenses if present, continue rinsing. Seek medical aid if irritation continues
Skin Contact: Rinse exposed skin with water and mild soap. Remove contaminated clothing. Get medical attention if rash or irritation occurs
Ingestion: Rinse mouth, drink water to dilute, consult a doctor if discomfort continues or considerable amounts consumed
Most Important Symptoms: Irritation and redness in eyes, sneezing, occasional coughing, mild gastrointestinal upset
Notes to Physicians: Treat symptoms, no known specific antidote
Extinguishing Media: Use water spray, carbon dioxide, foam, or dry chemical extinguishers
Fire Hazards: Not flammable or explosive. High heat may generate toxic fumes such as oxides of phosphorus and sodium
Firefighting Instructions: Wear self-contained breathing apparatus and full protective gear. Prevent run-off. Keep downwind if possible during large fires
Decomposition Products: Produces toxic gases including phosphorus oxides under combustion or extreme heating
Special Equipment: Standard firefighting PPE, chemical-resistant boots and gloves
Personal Precautions: Use dust mask or respirator, eye protection, gloves, and protective clothing. Isolate spill area
Environmental Precautions: Avoid allowing material to reach waterways, storm drains, or soil. Contain spills with dikes or absorbent materials
Cleanup Methods: Sweep or vacuum up spilled powder and place in suitable containers for disposal. Clean area thoroughly with water to remove residues. Avoid creating or breathing dust clouds
Disposal: Collect for proper waste disposal as per local regulations
Safe Handling: Keep container tightly closed. Work in a well-ventilated area or under dust extraction system. Prevent contact with moisture, acids or incompatible materials
Storage Conditions: Store in a dry, cool location in original packaging. Protect from humidity, direct sunlight and temperature extremes. Keep away from acids and moisture
Incompatibility: Avoid contact with strong acids as it reacts with acids to release heat or toxic gases. Keep away from reducing agents
Hygiene: Wash hands and face thoroughly before eating, drinking or smoking. Do not reuse empty containers for food or drink storage
Exposure Limits: No specific occupational exposure limit established for SAPP, general particulates not otherwise regulated (PNOR) limits may apply — typically 10 mg/m3 (inhalable particles)
Engineering Controls: Operate with good local exhaust ventilation or dust extraction. Enclosed processes preferred for production environments
Personal Protection: Dust mask or NIOSH-approved respirator for dusty conditions; safety goggles or face shield; chemical-resistant gloves (PVC or nitrile recommended); protective lab coat or coveralls
Environmental Protection: Prevent dispersion or runoff into wastewater systems or natural bodies of water
Other Controls: Eye-wash stations and emergency showers recommended in facilities where large quantities handled
Appearance: White powder or crystalline solid
Odor: Odorless
Odor threshold: Not applicable
pH: 4.0–5.0 in 1% water solution
Melting Point: Decomposes above 220°C
Boiling Point: Not applicable (decomposes before boiling)
Solubility: 14.5 g/100 mL water at 20°C
Vapor Pressure: Not applicable
Density: 2.3 g/cm3
Evaporation Rate: Not applicable
Flash Point: Not flammable
Auto-ignition Temperature: Not applicable
Viscosity: Not applicable
Partition Coefficient: Not available
Decomposition Temperature: Begins to decompose above 220°C, releasing phosphoric oxides
Stability: Stable under recommended storage conditions, sensitive to moisture over time
Hazardous Reactions: Reacts with strong acids or strong bases to release heat, may decompose forming sodium and phosphorus oxides
Conditions to Avoid: High heat, open flame, contact with acids, exposure to excessive humidity
Incompatible Materials: Acids, strong alkalis, oxidizing and reducing agents
Hazardous Decomposition Products: Sodium oxides, phosphorus oxides, phosphoric acid fumes
Likely Routes of Exposure: Inhalation, ingestion, skin and eye contact
Acute Toxicity: Oral LD50 for rats is above 3,000 mg/kg — low toxicity profile for single exposures
Skin Corrosion/Irritation: May cause mild irritation with prolonged contact
Serious Eye Damage/Irritation: Causes eye irritation including redness and watering
Respiratory Sensitization: May trigger coughing or sneezing in sensitive individuals
Chronic Effects: No evidence of teratogenicity, mutagenicity, or carcinogenicity in humans from normal exposure; chronic overexposure at industrial levels could produce gastrointestinal or renal complications
Other Effects: Ingestion of large quantities may disturb electrolyte balance
Ecotoxicity: Low acute toxicity to aquatic organisms. Discharges to water may contribute to eutrophication
Persistence and Degradability: Inorganic compound, not expected to undergo biodegradation but will dissociate in water
Bioaccumulation Potential: Does not bioaccumulate in aquatic life
Mobility in Soil: Moderately mobile in water, soluble and readily disperses
Other Adverse Effects: Overuse in water streams can stimulate algae blooms due to phosphates, declining water quality downstream
Disposal Methods: Dispose via landfill or incinerate in accordance with local, state, and national waste regulations for food grade chemicals
Packaging Disposal: Triple-rinse empty containers before recycling or landfill. Do not reuse packaging to store food/drink
Special Considerations: Prevent large quantities from entering natural water systems or storm drains
Product Residue: Use up residues whenever possible in line with intended food industry uses. Sweep up remaining material for proper disposal
UN Number: Not regulated for transport
Proper Shipping Name: Not classified as dangerous goods by TDG, IMDG, ICAO/IATA
Transport Hazard Class: None
Packing Group: None
Environmental Hazards: Not considered a marine pollutant
Special Precautions: Secure packaging to prevent movement and avoid moisture. Prevent dust generating during loading/unloading
Chemical Inventory Listings: Listed on major chemical inventories (TSCA, EINECS, DSL)
Food Additive Approvals: Approved by FDA, EFSA, and related authorities for food use within specific limits
Workplace Regulations: General workplace dust regulations may apply
Labeling: Requires ingredient and safety labeling in most regions
Other Requirements: Compliance with Good Manufacturing Practices (GMP) for use in food products
Restrictions: Subject to food-grade use limits, environmental discharge controls, and storage rules under local and national laws
