Product Name: Diammonium Phosphate (DAP)
Chemical Formula: (NH4)2HPO4
Common Names: DAP, Ammonium Phosphate Dibasic
CAS Number: 7783-28-0
Recommended Use: Fertilizer, Fire Retardant, Chemical Reagent
Supplier or Manufacturer: [Insert Actual Supplier Here, with Address and Contact Information]
Emergency Contact Number: [Insert Emergency Contact Here]
Classification: Not classified as hazardous under GHS
Signal Word: None
Hazard Statements: Dust might irritate eyes, skin, or lungs if handled carelessly; Long-term exposure to dust could pose possible risk for respiratory problems
Pictograms: No pictogram needed by GHS
Precautionary Statements: Avoid breathing dust; Work in well-ventilated places; Wear simple eye and skin protection; Wash hands after use; Keep away from food and drink if possible
Chemical Name: Diammonium Phosphate
Synonyms: DAP, Ammonium Phosphate Dibasic
CAS Number: 7783-28-0
Percentage by Weight: 98–99%
Impurities: Trace levels of iron, magnesium, calcium, silicon, and moisture
Other additives: Normally free from added stabilizers, colorants, or binders
Inhalation: Move person to fresh air; Help them get comfortable; Get medical attention for persistent coughing or breathing trouble
Skin Contact: Brush off loose particles; Wash with plenty of water and soap
Eye Contact: Rinse cautiously with water for several minutes; Remove contact lenses if present and easy; Continue rinsing; Call for attention if irritation sticks around
Ingestion: Rinse mouth out; Drink water to dilute; Don’t force vomiting; Never give fluids to someone passed out; Get medical help if discomfort or symptoms develop
Flammability: Not combustible
Suitable Extinguishing Media: Water spray, foam, dry powder, carbon dioxide for nearby materials
Hazardous Combustion Products: Ammonia fumes and phosphorus oxides may get released at high temperatures
Firefighting Instructions: Use full protective equipment; Wear breathing apparatus if smoke or toxic fumes are around; Keep cool water spray on containers; Avoid breathing released vapor or dust
Specific Hazards: If heated, might break down and produce toxic nitrogen oxides or ammonia gas
Personal Precautions: Keep dust levels low; Avoid direct contact; Place a mask or respirator if dusty; Don’t step in spill barefoot
Environmental Precautions: Stop large leaks from getting into drains, surface water, or soil; Collect spilled material quickly
Cleanup Methods: Use broom or shovel to gather dry powder; Place in suitable containers for recycling or disposal; Wash area with water if possible to remove residue; Avoid creating airborne dust
Handling: Minimize dust generation; Open bags carefully; Mix or transfer with tools—not by hand; Wash exposed skin before leaving work area
Storage: Store in a cool, dry, well-ventilated place; Keep away from incompatible materials such as strong acids and alkalis; Shelve above floor level to avoid moisture; Keep containers sealed when not in use; Separate from food and animal feed
Special Requirements: Don’t smoke, eat, or drink near storage areas
Exposure Limits: OSHA PEL: 15 mg/m3 TWA (total dust) and 5 mg/m3 TWA (respirable fraction)
Engineering Controls: Work with local exhaust ventilation; Set up dust collection at transfer points
Personal Protection: Use dust-proof goggles; Wear gloves, long sleeves, and dust mask/respirator (NIOSH certified for particulates); Wash work clothes regularly
Hygiene Measures: Wash hands after handling; Avoid inhaling dust; Remove contaminated clothing before breaks and end of shifts
Appearance: White, off-white, or greyish granules or powder
Odor: Slight ammonia scent if present
Odor Threshold: Not established
pH (in aqueous solution): Typically 7.5–8.0 at 5% solution
Melting Point: 155°C (decomposes)
Boiling Point: Not applicable (decomposes)
Solubility: 574 g/L at 25°C in water
Specific Gravity: Around 1.62 (water=1)
Vapor Pressure: Not relevant for solid
Vapor Density: Not relevant
Flash Point: Not applicable
Flammability: Not flammable
Explosive Properties: Not explosive
Other Data: No oxidizing properties; Non-volatile
Chemical Stability: Stable under normal temperatures and dry conditions
Conditions to Avoid: High humidity, wet conditions, heat sources
Incompatible Materials: Strong acids (releases ammonia); Strong bases; Oxidizers
Decomposition Products: Ammonia, nitrogen oxides, phosphorus oxides at high temperature
Hazardous Reactions: Does not polymerize; May react with acids or alkali to release ammonia
Acute Toxicity: Low toxicity; LD50 (oral, rat) > 5000 mg/kg
Skin Corrosion/Irritation: Not expected to cause irritation with short exposure
Serious Eye Damage/Irritation: Dust can cause mechanical irritation
Respiratory Sensitization: Breathing high dust levels can irritate airways or worsen asthma
Ingestion Risk: Large doses may upset stomach, cause vomiting
Chronic Exposure: Repeated and prolonged contact may dry out or irritate skin; Long exposure to dust can affect the lungs
Carcinogenicity: Not listed by IARC, NTP, or OSHA as a cancer threat
Ecotoxicity: Overuse on fields or spills near waterways may boost algae growth and lower water quality
Persistence: Dissolves in water, soaks into soil; Can mobilize nitrogen and phosphate into runoff
Bioaccumulation: No build-up in plants or animals
Mobility: Moves quickly with water, especially on light soils
Other Effects: Runoff can upset balance in lakes and rivers, leading to oxygen loss, fish kills, and loss of biodiversity
Disposal Methods: Use in line with local, state, and federal rules; Spilled or leftover solid can get re-used in fertilizer or handled as non-hazardous chemical waste
Container: Empty bags or drums can be taken to regular landfill if cleaned out properly; Never flush bulk residue into drains or natural water systems
UN Number: Not regulated
Proper Shipping Name: Diammonium Phosphate
Transport Hazard Class: No class for hazards
Packing Group: No packing group required
Special Precautions: Protect bags and containers from rain or moisture; Keep away from strong acids during shipping
Environmental Considerations: No Marine Pollutant label required
OSHA: Not hazardous by OSHA standards
TSCA: Listed
SARA Title III Sec. 302/304/313: Not listed
RCRA: Not regulated as hazardous waste
WHMIS (Canada): Not controlled
Other: Check state, provincial, and local rules for further requirements; Product info changes with new research, so review regularly
