Product Name: Monoammonium Phosphate
Chemical Formula: NH4H2PO4
CAS Number: 7722-76-1
Uses: Fertilizer, fire extinguisher powder, common in industrial operations
Supplier Details: Company name, address, emergency phone number, and other relevant contact information
Molecular Weight: 115.03 g/mol
Synonyms: Ammonium dihydrogen phosphate, MAP, NH4H2PO4
Classification: Not considered hazardous under OSHA Hazard Communication Standard
GHS Label Elements: No pictogram, no signal word required
Physical Hazards: Dust can cause mechanical irritation
Health Hazards: Causes mild respiratory or eye irritation if handled carelessly; ingestion can upset stomach
Environmental Hazards: Large spills to waterways may contribute to nutrient pollution
Precautionary Statements: Avoid dust inhalation, wash hands thoroughly after handling, minimize release into the environment
Ingredient: Monoammonium Phosphate
Chemical Formula: NH4H2PO4
Concentration: >99% by weight
Impurities: Trace levels of moisture or other phosphates, if any
Mixture/Single Substance: Pure substance
Inhalation: Move outdoors to fresh air, offer oxygen if breathing trouble starts, seek medical help if symptoms continue
Skin Contact: Brush off dust and wash area with soap and water
Eye Contact: Flush gently for at least 15 minutes with clean water; remove contact lenses if present
Ingestion: Give water to rinse mouth, don’t induce vomiting, get medical support if discomfort persists
Symptoms to Watch: Coughing, slight eye redness, upset stomach, itchiness or rashes
Suitable Extinguishing Media: Water spray, foam, dry chemical, CO2
Hazardous Combustion Products: Can give off ammonia, phosphorous oxides if involved in a fire
Protective Equipment: Firefighters should use self-contained breathing apparatus and full protective gear
Special Hazards: Non-flammable material; only the packaging or surroundings burn
Advice for Firefighters: Keep containers cool with water spray, avoid inhaling decomposition fumes
Personal Precautions: Put on dust mask, goggles, gloves to prevent direct contact
Environmental Precautions: Prevent material from washing into waterways or sewers
Spill Containment: Sweep or vacuum up, avoid creating dust clouds
Cleanup Methods: Use shovel and suitable containers, label waste, wash spill area with water after collection
Emergency Procedures: Isolate the area, restrict unnecessary entry during cleanup, ventilate space if dust develops
Storage Conditions: Store in cool, dry, well-ventilated space; keep away from incompatible materials like alkalis, calcium compounds, strong acids
Handling Recommendations: Avoid raising dust, close containers tightly after use, wear protective gear
Hygiene Practices: Wash hands after handling, especially before eating or drinking, keep work clothes separate
Incompatibilities: Strong bases, acids, oxidizers—keep clear
Packing Materials: Use containers that block moisture, like plastic or coated paper sacks
Control Parameters: No mandatory exposure limits, but recommend staying below 10 mg/m3 for total particulates
Ventilation: Use general or local exhaust to keep dust low
Respiratory Protection: Dust mask if air gets hazy
Hand Protection: Protective gloves—rubber or nitrile
Eye Protection: Safety goggles for dusty operations
Skin Protection: Long sleeves or lab coat
Other Controls: Emergency eyewash available at worksite, showers if large quantities handled
Appearance: White or off-white powder or granules
Odor: Almost none
pH: About 4.2 in 1% solution
Melting Point: 190°C (decomposes)
Boiling Point: Not applicable
Solubility: Soluble in water (23g/100mL at 20°C)
Vapor Pressure: Not volatile
Density: Roughly 1.80 g/cm3
Flash Point: Not flammable
Evaporation Rate: Not applicable
Decomposition Temperature: Above 190°C—emits ammonia and phosphoric acid gases
Stability: Stable under standard temperatures and storage
Reactivity: Reacts slowly with strong acids or alkalis
Decomposition: Can break down at high heat, throws off ammonia, phosphoric oxides
Hazardous Polymerization: Doesn’t happen
Incompatible Materials: Metals, strong reducing agents, strong oxidizers, lime
Acute Toxicity: Low oral toxicity (LD50 in rats: >3000 mg/kg)
Skin/Eye Irritation: May cause irritation with prolonged exposure, not severely corrosive
Chronic Exposure: Not linked with cancer or reproductive effects
Sensitization: Not a known sensitizer
Routes of Entry: Inhalation, skin or eye contact, ingestion
Symptoms: Coughing, sore throat, mild stomach upset, red or watery eyes
Ecotoxicity: Not acutely toxic to aquatic life in normal use
Persistence: Breaks down in soil by natural processes, but releases ammonia and phosphate that can boost algae and weeds
Bioaccumulation: Doesn’t build up in organisms
Mobility: Water soluble, can move through soil into groundwater if spilled in large amounts
Other Concerns: In large releases, can contribute to eutrophication in lakes, rivers, streams
Disposal Method: Collection in secure, labeled containers for landfill in line with local rules
Prohibited Disposal: Avoid flushing into drains or natural water bodies
Contaminated Packaging: Rinse and reuse or dispose of according to regulation
Waste Codes: Not a hazardous waste, but may fall under local waste disposal regulations
Best Practices: Use up product if possible, keep product out of environment when discarding
UN Number: Not regulated
Transport Hazard Class: Not classified as dangerous goods
Packing Group: Not applicable
Proper Shipping Name: Monoammonium Phosphate, non-hazardous
Transport Precautions: Keep dry, stow away from reactives, prevent tearing of packaging to avoid dust leaks
OSHA: Not hazardous under Hazard Communication Standard
TSCA: Listed on U.S. inventory
SARA Title III: Not listed as an extremely hazardous substance
WHMIS (Canada): Not controlled
EU Regulations: Not classified as hazardous under REACH/CLP
State Regulations: May have specific state reporting thresholds or fertilizer rules
Other Notable Rules: Eye on local codes related to fertilizers, fire safety, and waterway discharge
