Contact Us
West Ujimqin Banner, Xilingol League, Inner Mongolia, China
© 2025 Alchemist Worldwide Ltd, All Right Reserved
Product Name: Sodium Dihydrogen Pyrophosphate
Chemical Formula: Na2H2P2O7
CAS Number: 7722-88-5
Synonyms: Disodium dihydrogen diphosphate, Disodium pyrophosphate, SAPP
Recommended Use: Food additive, water treatment, sequestrant
Supplier Name: Provided by manufacturer or distributor
Emergency Contact: Refer to regional poison control center
Classification: Not classified as hazardous according to GHS; skin, eye, and respiratory irritant
Label Elements: Signal word: Warning; Pictogram: Exclamation mark
Hazard Statements: Causes skin and eye irritation, may cause respiratory irritation
Precautionary Statements: Avoid breathing dust, wear protective equipment, wash hands after handling
Other Hazards: May aggravate pre-existing eye and respiratory conditions; not flammable but can decompose releasing phosphorus oxides in high heat
Routes of Exposure: Inhalation, ingestion, skin, eyes
Target Organs: Eyes, skin, respiratory tract
Chemical: Sodium Dihydrogen Pyrophosphate
Concentration: 98–100%
CAS Number: 7722-88-5
Impurities: Trace moisture, sodium orthophosphate below 2%
Other Ingredients: None expected in commercial-grade material
Eye Contact: Flush with plenty of water for at least 15 minutes, remove contact lenses if present, seek medical attention if irritation persists
Skin Contact: Rinse skin with water, remove contaminated clothing, wash with soap, seek attention for persistent redness
Inhalation: Move person to fresh air, keep at rest, seek medical help if symptoms like coughing or difficulty breathing develop
Ingestion: Rinse mouth, do not induce vomiting, offer a few sips of water, get medical advice quickly if large amount swallowed
Symptoms: May include burning, irritation, redness, cough, sore throat
Suitable Extinguishing Media: Use water spray, foam, dry chemical, or CO2 for surrounding fire—material itself is not combustible
Unsuitable Media: No known restrictions
Specific Hazards: Forms irritating and toxic phosphorus oxides on decomposition above 200°C
Protective Equipment: Full protective clothing and self-contained breathing apparatus
Special Risks: Avoid inhaling fumes, evacuate area if large fire or spillage; prevent runoff from entering drains
Advice for Firefighters: Stay upwind, keep containers cool with water spray, prevent exposure to decomposition gases
Personal Precautions: Wear dust mask, chemical goggles, gloves, protective clothing to avoid contact
Environmental Precautions: Keep out of waterways and drains; prevent bulk release into soil
Containment: Sweep up spilled material carefully to avoid dust, place in sealed containers for disposal
Cleanup Methods: Use non-sparking tools, ventilate area, wash the spill site with copious water after removal
Other Advice: Dispose of all cleanup materials in accordance with local regulations; avoid reusing contaminated cleaning items
Handling: Avoid generating dust, wear protective gear, wash hands after use, store away from food and beverages
Technical Measures: Use with adequate local ventilation, keep workplace clean, ensure all handlers know the hazards
Storage Conditions: Store in tightly closed containers in a dry, cool, well-ventilated area, protect from moisture and direct sunlight
Incompatibilities: Strong acids, strong bases, oxidizers
Other Recommendations: Label containers clearly, limit access to trained personnel, don't store near incompatible substances
Occupational Exposure Limits: No official limit established, keep airborne dust below 10 mg/m³ (inhalable)
Engineering Controls: Use local exhaust ventilation, process enclosures as needed, maintain negative air pressure in handling area
Respiratory Protection: Use NIOSH-approved dust mask or respirator if dusting may occur
Eye Protection: Safety goggles or face shield recommended
Skin Protection: Wear chemical-resistant gloves and lab coat or coveralls
Hygiene Measures: Wash hands before breaks, after handling; avoid eating, drinking, or smoking in work area
Environmental Exposure Controls: Prevent entry to drains, waterways; use secondary containment for storage
Appearance: White, odorless, crystalline powder
Molecular Weight: 221.94 g/mol
pH (1% solution): Approximately 4.0–5.0
Melting Point: Decomposes above 200°C
Boiling Point: Not applicable (decomposes before boiling)
Solubility in Water: 20–25 g/100 mL at 25°C
Density: 2.130 g/cm³ at 20°C
Vapor Pressure: Not applicable (non-volatile)
Odor Threshold: Not applicable
Other Data: Non-flammable, non-explosive, hydroscopic in nature, taste slightly acidic and salty
Chemical Stability: Stable under recommended storage conditions in sealed containers; absorbs moisture when exposed to air
Conditions to Avoid: Heat above 200°C, moisture, exposure to acids/bases, contact with oxidizers
Materials to Avoid: Acids, strong alkalis, reducing and oxidizing agents
Hazardous Decomposition Products: Phosphorus oxides such as P2O5 released on strong heating or fire situation
Polymerization: No dangerous polymerization expected
Reactivity: Slow hydrolysis in water forming orthophosphates, vigorously reacts with strong acids and alkalis
Acute Toxicity: LD50 (oral, rat) estimated >1,000 mg/kg; not considered highly toxic
Potential Health Effects: Irritation of eyes, skin, and respiratory system on contact or inhalation; ingestion may cause gastrointestinal upset
Chronic Effects: No evidence of sensitization or chronic toxicity at typical industrial exposure levels
Carcinogenicity: Not listed as carcinogenic by IARC, NTP, OSHA
Mutagenicity: Tests do not suggest mutagenic risk
Other Data: No adverse developmental or reproductive effects documented, corrosive at high concentrations
Ecotoxicity: Harmful to aquatic plants and invertebrates at elevated concentrations; stimulates algal growth due to available phosphates
Aquatic Toxicity: LC50 (Fish, 96 h) >100 mg/L; considered low-risk for fish in typical discharge quantities
Persistence and Degradability: Not persistent; converts to orthophosphate which may contribute to eutrophication
Bioaccumulative Potential: Not bioaccumulative
Mobility in Soil: Dissolves readily, migrates in water, may leach to groundwater with improper disposal
Other Harmful Effects: Overapplication or accidental release may disrupt ecosystem phosphorus balance
Waste Handling: Collect and contain for proper disposal; do not return residual material to storage to avoid contamination
Disposal Methods: Dispose of in accordance with local, national, and regional regulations; avoid discharge to sewer systems
Container Disposal: Triple-rinse containers before disposal or recycling
Additional Advice: Consult experienced waste disposal contractor for large-scale disposal requirements; avoid open dumping
UN Number: Not regulated for transport
Proper Shipping Name: Not classified as hazardous for air, sea, or road transport
Transport Hazard Class: Not applicable
Packing Group: Not applicable
Special Precautions: Prevent package damage and moisture during transit, use dry and tight packaging
Transport Regulations: Confirm with local transport authority if bulk handling
Inventory Status: Listed on US TSCA, EU REACH, Australia AICS, Canada DSL
SARA 313: Not reportable under SARA Title III
OSHA HazCom: Regulated as hazardous only for irritant properties
EU Classification: Not hazardous under CLP Regulation
Food Additive Status: Allowed in food and water processing with specified concentration limits
Label Requirements: Follow workplace hazard communication standards; provide safety instructions to handlers
Other Regulations: Subject to local and state environmental discharge and usage rules
West Ujimqin Banner, Xilingol League, Inner Mongolia, China
