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Product Name: Disodium Dihydrogen Pyrophosphate
Chemical Formula: Na2H2P2O7
CAS Number: 7758-16-9
Synonyms: SAPP, Sodium Acid Pyrophosphate
Recommended Uses: Food additive, sequestrant, leavening agent, water treatment
Supplier: Manufacturer and distributor details should be supplied based on site-specific sourcing.
Emergency Contact: Refer to national poison control center or workplace emergency line.
Classification: Eye irritant, mild skin irritant
Signal Word: Warning
Hazard Statements: Causes eye irritation; prolonged contact may result in mild temporary skin redness or dryness
Precautionary Statements: Prevent contact with eyes, avoid inhaling dust, practice good industrial hygiene
Pictogram: Exclamation mark (GHS07 symbol)
Routes of Exposure: Inhalation, skin and eye contact, ingestion
Main Ingredient: Disodium Dihydrogen Pyrophosphate
Chemical Concentration: Over 98% (food and industrial grades)
Other Ingredients: None in most standard commercial sources; contaminant levels such as heavy metals typically below regulatory concern
Impurities: Traces of sodium phosphate, water (moisture content varies by grade)
General Advice: Remove exposed persons from the area, seek medical attention for severe or persistent symptoms
Eye Contact: Rinse eyes gently with large amounts of water for at least 15 minutes, lift eyelids to ensure thorough flushing
Skin Contact: Wash affected skin thoroughly with water and mild soap, remove contaminated clothing
Inhalation: Move to fresh air, keep comfortable for breathing; medical attention necessary if symptoms linger
Ingestion: Rinse mouth, drink water to dilute; do not induce vomiting unless directed; seek medical advice if large quantity swallowed or symptoms appear
Suitable Extinguishing Media: Water spray, foam, dry chemical, or carbon dioxide
Special Hazards: Material itself does not burn, but heating can form irritating phosphorus oxides
Protective Equipment: Use self-contained breathing apparatus in fire conditions, wear protective gear including gloves and appropriate eye protection.
Specific Firefighting Methods: Control runoff, use appropriate extinguishing method for surrounding fire, avoid inhalation of gases and dust
Personal Protection: Wear dust mask, safety goggles, chemical-resistant gloves
Spill Cleanup: Sweep or scoop up to minimize dust creation, transfer into suitable containers
Environmental Precautions: Prevent spillage from entering drains or waterways, avoid discharge to the environment
Small Spills: Damp down to avoid airborne dust, collect mechanically
Large Spills: Isolate spill area, contain material, arrange proper disposal
Handling: Use in well-ventilated areas, avoid breathing dust, avoid contact with skin and eyes, wash hands after handling
Storage Conditions: Store in tightly closed original container; keep dry, cool and away from incompatible materials such as strong acids and bases
Storage Temperature: Ambient (15–25°C)
Special Requirements: Maintain original packaging integrity to prevent moisture absorption; avoid storage near reactive substances
Incompatible Materials: Acids, alkalis, oxidizers
Occupational Exposure Limits: No government-mandated exposure limits, but minimize dust levels as good practice
Engineering Controls: Local exhaust ventilation, general area ventilation
Personal Protective Equipment: Safety goggles, chemical-resistant gloves, dust respirator, protective clothing
Hygiene Measures: Wash thoroughly after handling, do not eat or drink in work areas, change contaminated clothing
Environmental Controls: Prevent release to environment via drains or air
Appearance: White or colorless powder or granular material
Odor: Odorless
pH (1% Solution): 4.0–4.8
Melting Point: Above 200 °C (decomposes)
Solubility: Soluble in water, nearly insoluble in alcohol
Density: 2.07 g/cm3
Boiling Point: Not applicable (decomposes before boiling)
Vapor Pressure: Negligible at ambient conditions
Flash Point: Non-combustible
Storage Stability: Stable under standard conditions if kept dry
Stability: Stable under normal ambient and anticipated storage conditions
Incompatible Materials: Strong acids, strong bases, oxidizers
Hazardous Decomposition Products: Phosphorus oxides may form at elevated temperatures
Conditions to Avoid: Exposure to moisture, extreme heat, contact with incompatible materials
Polymerization: Will not occur
Likely Routes of Exposure: Inhalation, ingestion, skin and eye contact
Acute Toxicity: Low oral and dermal toxicity based on animal studies; ingestion of large amounts can disturb electrolyte/fluid balance
Skin Corrosion/Irritation: Mild irritation possible with prolonged contact
Serious Eye Damage/Irritation: Eye contact can cause irritation, redness, discomfort
Respiratory Effects: Dust exposure can cause irritation of respiratory tract
Chronic Effects: Not known to be carcinogenic, mutagenic, or reprotoxic
Sensitization: Not a known sensitizer
Ecotoxicity: Product is not classified as hazardous for the environment, but significant releases can disrupt aquatic environments due to elevation of phosphate levels
Persistence and Degradability: Inorganic substance, does not degrade; phosphate ions may contribute to eutrophication
Bioaccumulation Potential: Bioaccumulation not expected
Mobility in Soil: Readily dissolves and may migrate with water; potential for phosphate runoff
Other Adverse Effects: Large releases in water may boost algal growth, impacting aquatic life
Waste Disposal Methods: Dispose according to local, regional, or national regulations; not considered hazardous waste but avoid large-scale dumping
Contaminated Packaging: Rinse and recycle if possible, otherwise manage as normal waste
Special Precautions: Prevent spillage to environment, minimize dust during cleanup and disposal
UN Number: Not regulated for transport
Proper Shipping Name: Disodium Dihydrogen Pyrophosphate (non-hazardous for transport)
Transport Hazard Class: Not assigned
Packing Group: Not assigned
Special Precautions: Avoid contact with food during transport, ship in sealed containers to prevent contamination or moisture ingress
Global Inventories: Listed on major chemical inventories such as TSCA (USA), EINECS (EU), DSL (Canada), AICS (Australia)
Regulatory Status: Approved for use as a food additive in many countries; subject to maximum levels in finished food
Labeling Requirements: Comply with local labeling and safety data sheet laws
OSHA (US): Not listed as hazardous
EU REACH: Registered; safety and use restrictions may apply depending on use
Other: Food and workplace safety standards may set limits on exposure, purity, and use conditions
