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Product Name: Potassium Dihydrogen Phosphate Trihydrate
Synonyms: Monopotassium phosphate trihydrate, MKP trihydrate
CAS Number: 16788-57-1
Recommended Use: Fertilizer, laboratory reagent, food additive
Manufacturer/Supplier: Contact designated chemical supplier for details
Emergency Contact: Refer to national emergency numbers or supplier hotline
Address: Supplier’s physical location goes here
Hazard Classification: Not classified as hazardous under GHS
Physical Hazards: Does not present a physical hazard under normal use
Health Hazards: May cause mild irritation to eyes, skin, and respiratory system upon exposure
Environmental Hazards: Low risk; excessive quantities can disrupt aquatic environments and promote algal blooms
Key Symptoms: Mild eye and skin irritation, coughing if inhaled
Label Elements: Not required to carry hazard pictograms
Precautionary Statements: Avoid inhalation and contact with eyes/skin; wash thoroughly after handling
Chemical Name: Potassium Dihydrogen Phosphate Trihydrate
Purity: 98% minimum (reagent grade)
Molecular Formula: KH2PO4·3H2O
Molecular Weight: 174.18 g/mol (anhydrous base: 136.09 g/mol, trihydrate adjustment)
Impurities: Trace amounts of chloride, sulfate, and nitrate possible, depending on manufacturer
Other Components: No hazardous impurities above concentration limits set by regulation
Inhalation: Remove victim to fresh air, keep at rest, seek medical advice if symptoms persist
Skin Contact: Wash affected area with soap and water, remove contaminated clothing
Eye Contact: Rinse cautiously with water for several minutes, remove contact lenses if present and easy to do
Ingestion: Rinse mouth, drink water if conscious; seek professional advice if large amount swallowed
Most Important Symptoms: Mild irritation of eyes, mucous membranes, and skin
Advice for Medical Personnel: Symptomatic treatment, no specific antidote known
Suitable Extinguishing Media: Water spray, foam, dry chemical powder, carbon dioxide
Specific Hazards: Product does not burn; hazardous gases such as phosphorus oxides may form if involved in fire
Protective Equipment: Wear self-contained breathing apparatus, full protective clothing
Special Procedures: Cool exposed containers with spray water, avoid inhaling dust or fumes
Combustion Products: Potassium oxide, phosphorus oxides under extreme heat
Explosion Hazard: Material is not explosive
Personal Precautions: Use appropriate personal protection for dust
Spill Containment: Prevent further leaks if safe, keep out of drains and waterways
Cleanup Methods: Sweep up and collect; avoid creating dust; place in suitable container for disposal
Environmental Precautions: Minimize entry into surface water or soil to prevent nutrient buildup
Reference to Other Sections: See exposure controls and disposal information below
Safe Handling: Work in a well-ventilated area, wear goggles and gloves
Avoid: Breathing dust, contact with eyes/skin
Protective Measures: Keep containers tightly closed, use only with suitable materials
Storage Conditions: Store in cool, dry, well-ventilated area, away from incompatible substances
Incompatibilities: Strong oxidizing agents, alkalis, magnesium, and calcium compounds may react
Packing Materials: Use sealed, corrosion-resistant packaging
Occupational Exposure Limits: No established limits for this compound; treat as inert dust
Engineering Controls: Use local exhaust ventilation if dust becomes airborne
Individual Protection: Safety glasses, chemical-resistant gloves, laboratory coat recommended
Respiratory Protection: Dust mask or respirator if airborne concentrations develop
Hygiene Measures: Wash hands after handling, do not eat, drink, or smoke near product
Appearance: Colorless or white crystals or powder
Odor: Odorless
Odor Threshold: Not applicable
pH (10% Solution): 4.2–4.5
Melting Point: Decomposes without melting
Boiling Point: Not available (decomposes on heating)
Flash Point: Not flammable
Evaporation Rate: Not applicable
Flammability: Non-flammable
Vapor Pressure: Negligible
Relative Density: 2.338 g/cm3 (at 20°C, anhydrous)
Water Solubility: 220 g/L at 20°C
Partition Coefficient: Not applicable
Auto-ignition Temperature: Not applicable
Decomposition Temperature: Above 252°C
Viscosity: Not applicable, solid product
Chemical Stability: Stable under normal storage and handling conditions
Conditions to Avoid: Avoid excessive heat, moisture, and contact with incompatible materials
Incompatible Materials: Strong oxidizing agents, alkalis, magnesium, calcium carbonate
Hazardous Reactions: Reaction with strong bases or metals may release heat or gases
Hazardous Decomposition: Phosphorus oxides, potassium oxide under fire conditions
Polymerization: Will not occur
Acute Toxicity: Low acute oral and dermal toxicity, estimated LD50 (rat, oral) > 2,000 mg/kg
Skin Corrosion/Irritation: Mild, transient irritation possible
Eye Damage/Irritation: May cause redness, tearing, or discomfort
Respiratory Sensitization: No data; risk considered low under recommended use
Skin Sensitization: Not reported
Repeated Dose Toxicity: Not identified as a chronic toxicity risk
Carcinogenicity: Not classified by IARC, NTP, or OSHA as a carcinogen
Mutagenicity and Reproductive Toxicity: Not known
Other Effects: Large doses may affect electrolyte balance if ingested
Eco-toxicity: Not acutely toxic to aquatic life; risk of eutrophication if large amounts enter water
Persistence and Degradability: Inorganic salt, dissociates in water, does not degrade by biological means
Bioaccumulative Potential: Negligible, does not bioaccumulate
Mobility in Soil: Soluble in water, likely to leach through soil
Other Adverse Effects: High concentrations in natural waters can lead to excessive plant growth and oxygen depletion
Waste Treatment Methods: Dispose of in accordance with national and local regulations
Product Disposal: Small quantities can be dissolved and flushed with water if permitted; larger amounts as chemical waste
Contaminated Packaging: Rinse thoroughly, recycle or dispose as appropriate
Environmental Precautions: Avoid release into environment in quantities that can alter nutrient balances
Special Precautions: Seek guidance from local authorities on appropriate disposal practices
UN Number: Not regulated
Proper Shipping Name: Not regulated for transport
Transport Hazard Class: Not classified as dangerous for transport
Packing Group: Not assigned
Environmental Hazards: Not a marine pollutant
Transport Precautions: Protect from moisture and physical damage
Inventory Status: Listed on TSCA (US), EINECS (EU), DSL (Canada), AICS (Australia)
Safety, Health & Environmental Regulations: Not classified as hazardous under OSHA, EU CLP, WHMIS
SARA Title III: Not a reportable substance
California Proposition 65: Not listed
Other Restrictions: Subject to fertilizer and food safety regulations in some jurisdictions
Labeling Requirements: Comply with local and regional requirements for workplace labeling, if applicable
