Product Name: Monoammonium Phosphate
Chemical Formula: NH4H2PO4
CAS Number: 7722-76-1
Synonyms: MAP, Ammonium Dihydrogen Phosphate
Recommended Use: Fertilizer, fire extinguisher powder, industrial processing aid
Supplier: [Insert company name, address, and emergency contact details]
Emergency Phone Number: [Insert contact number for rapid response in accident or spill situations]
Hazard Class: Irritant, Eye and Skin
GHS Label Elements: Exclamation mark symbol, Signal word “Warning”
Health Hazards: Causes irritation to eyes, nose, and skin; inhalation of dust may cause respiratory discomfort or coughing, overexposure can aggravate pre-existing respiratory issues
Environmental Hazards: May promote eutrophication if large quantities reach surface or ground water, not classified as hazardous for the environment in most guidelines
Physical Hazards: No significant fire or explosion risk under normal conditions
Chemical Name: Monoammonium Phosphate
CAS Number: 7722-76-1
Concentration: 98–99.5% (by weight)
Other Substances: Water < 1%, Insoluble matter < 0.5%
Impurities: Trace amounts of free ammonia, heavy metals (lead, cadmium, arsenic — typically below regulatory limits)
Inhalation: Move affected person to fresh air, support breathing if there is any respiratory difficulty, rinse mouth and nose with water as needed
Eye Contact: Flush immediately with plenty of running water for at least 15 minutes, keep eyelids open, seek medical attention if irritation persists
Skin Contact: Take off contaminated clothing, wash exposed area with water and mild soap, keep area clean
Ingestion: Rinse mouth, drink water to dilute only if victim fully conscious, do not induce vomiting unless instructed by a medical professional, seek advice from a healthcare provider if large amounts are swallowed
Most Important Symptoms/Effects: Irritation, redness, coughing, mild stomach upset
Note to Physicians: Treat symptomatically, monitor electrolyte balance in severe cases of ingestion
Suitable Extinguishing Media: Use water spray, carbon dioxide, dry chemical, or foam; product itself does not burn, but packaging may
Unsuitable Media: None identified
Hazardous Combustion Products: Ammonia, phosphoric oxides, nitrogen oxides (at very high temperatures)
Protective Equipment for Firefighters: Full protective gear, self-contained breathing apparatus (SCBA) in case of decomposition fumes
Special Procedures: Keep containers cool with water if exposed to flames, avoid inhaling combustion fumes
Personal Precautions: Avoid inhaling dust, wear dust mask, goggles, gloves, and coveralls; ensure adequate ventilation in affected area
Environmental Precautions: Prevent runoff to soil, surface waters, and sewers, avoid large quantity releases to minimize impact on local waterways
Methods for Clean-Up: Sweep up with non-sparking tools, collect in suitable containers for reuse or disposal, wash spill site with water after material pick-up, avoid raising dust
Other Information: Use caution as spilled material may cause surfaces to become slippery
Safe Handling: Operate in well-ventilated areas, minimize dust generation, avoid breathing powder, use proper PPE, wash hands thoroughly after handling, keep food and drink away from work area
Safe Storage: Store in cool, dry, well-ventilated space away from incompatible materials such as alkalis and oxidizers, use corrosion-resistant containers, keep tightly closed, avoid long-term exposure to moisture which causes caking, stack bags securely to prevent falls or breakage
Incompatible Materials: Strong bases (liberates ammonia), strong oxidizers (fires or toxic fumes possible)
Storage Life: Product maintains stability under recommended conditions for several years
Occupational Exposure Limits: No OSHA PEL or ACGIH TLV for MAP itself, Nuisance dust limit: 10 mg/m3 (total), 3 mg/m3 (respirable) recommended
Engineering Controls: Local exhaust ventilation, closed handling systems where practical, dust suppression or extraction at points of use
Personal Protection: Safety goggles or glasses, dust mask or respirator (NIOSH-approved, if dust exceeds limits), protective gloves (rubber or chemical-resistant), apron for bulk handling, sturdy work shoes
Hygiene Measures: Wash hands after exposure, shower and change clothes at end of shift if significant contact occurs, do not eat/drink/smoke near product
Appearance: White or off-white crystalline powder or granules
Odor: Odorless
pH (1% solution): 4.2–4.8 (mildly acidic)
Melting Point: Decomposes above 190°C
Boiling Point: Not applicable (decomposes)
Solubility: Soluble in water (370 g/L at 20°C)
Bulk Density: 1.0–1.1 g/cm3
Vapor Pressure: Not applicable
Evaporation Rate: Not applicable
Flash Point: Not combustible
Explosive Properties: None
Other Data: Hygroscopic (absorbs moisture from air), forms lumps if exposed for long time
Chemical Stability: Stable under normal environmental and storage conditions
Possible Reactions: Releases ammonia gas with strong alkalis, decomposes to produce phosphoric acid and ammonia at higher temperatures
Conditions to Avoid: Excess moisture, high heat, prolonged sunlight exposure
Incompatible Materials: Reactive with strong bases, strong oxidizers, and certain metals
Hazardous Decomposition Products: Ammonia, nitrogen oxides, phosphate fumes in fire or at decomposition temperatures
Acute Toxicity: Oral LD50 (rat): >2000 mg/kg; not classified as acutely toxic to humans at occupational exposure levels
Skin/Eye Irritation: Can cause moderate irritation with prolonged or repeated contact
Inhalation: Inhalation of dust may trigger coughing, sneezing, mild respiratory irritation
Chronic Effects: No known long-term toxicity with proper handling and normal exposure
Sensitization: Not known to cause allergic reaction or sensitization
Carcinogenicity: Not listed by IARC, NTP, ACGIH, or OSHA
Other Data: No evidence for mutagenic or reproductive effects based on available studies
Aquatic Toxicity: Low acute toxicity to aquatic life, does not bioaccumulate, high concentrations contribute to eutrophication and algal blooms in water bodies
Persistence/Degradability: Inorganic, persists in soil/water as phosphate and ammonium ions
Mobility: Soluble in water, significant leaching possible on sandy soils, risk of groundwater contamination in sensitive areas
Effects on Soil/Plants: Can enhance plant growth when used as intended, excessive application imbalances ecosystems
Other Ecological Hazards: None expected beyond possibility of nutrient pollution
Waste Treatment Methods: Sweep up and reuse where feasible, collect residue for approved landfill or hazardous waste disposal site if contaminated, do not rinse large amounts into drains or watercourses
Containers/Packaging: Empty bags or containers may hold residue, triple rinse or follow local protocols prior to disposal, recycle or dispose according to local, regional, state, or national regulations
Disposal Restrictions: Follow community soil and water safety requirements; avoid unauthorized dumping
UN Number: Not regulated for transport as hazardous material
Proper Shipping Name: Monoammonium Phosphate
Transport Hazard Class: Not classified as dangerous for road, rail, sea, or air transport
Packing Group: Not applicable
Special Precautions for User: Protect against moisture and rough handling to avoid container rupture and spillage, load securely to prevent shifting on truck or container ship
OSHA Status: Not hazardous under OSHA Hazard Communication Standard, but dust nuisance precautions apply
TSCA Inventory: Listed
CERCLA/SARA: Not listed as hazardous substance or extremely hazardous substance
REACH Status (EU): Registered, compliant for import and industrial uses
WHMIS (Canada): Not controlled, but workplace handling rules apply
Other Regulations: Subject to local and national environmental, safety, and health rules especially for fertilizer use and water protection
