Material Safety Data Sheet: Dipotassium Phosphate Anhydrous DKP-A

Identification

Product Name: Dipotassium Phosphate Anhydrous (DKP-A)
Chemical Formula: K2HPO4
CAS Number: 7758-11-4
Manufacturer Name: Insert chemical supplier or manufacturer name here
Synonyms: Potassium hydrogen phosphate, DKP, Dipotassium phosphate
Recommended Use: Used as a buffering agent, fertilizer, food additive, water treatment chemical
Supplier Contact Details: Include full address, phone, and emergency contact number of supplier or distributor
Emergency Phone Number: Local emergency contact for hazardous materials spills and poison control
Product Code: Unique supplier code for DKP-A batch identification purposes

Hazard Identification

Hazard Classification: Eye irritation (Category 2A), Specific target organ toxicity - single exposure (Category 3)
GHS Label Elements: Pictogram with exclamation mark; warning signal word
Hazard Statements: May cause mild eye and skin irritation, may cause irritation of respiratory tract if dust inhaled, not considered toxic by ingestion under normal handling
Precautionary Statements: Wear protective eyewear, avoid dust generation, wash skin thoroughly after handling, use outdoors or in well-ventilated area
Symptoms of Exposure: Itchy or watery eyes, dry skin, cough or slight throat discomfort if exposed to airborne dust
Routes of Exposure: Eyes, skin, inhalation, ingestion

Composition / Information on Ingredients

Chemical Name: Dipotassium Phosphate Anhydrous
Common Name: DKP-A
CAS Number: 7758-11-4
Content: 99.0% minimum by weight
Impurities: Trace amounts of moisture, potassium carbonate, phosphate, no known hazardous impurities at relevant concentrations
Molecular Weight: 174.18 g/mol

First Aid Measures

Inhalation: Move to fresh air, encourage slow breathing, seek medical attention for severe or persistent symptoms
Skin Contact: Remove any contaminated clothing, wash exposed skin thoroughly using soap and plenty of water, consult a physician for persistent irritation
Eye Contact: Flush with plenty of water for at least fifteen minutes, hold eyelids open occasionally, remove contact lenses if present and easy to do, obtain medical help for ongoing discomfort
Ingestion: Rinse mouth with water, drink water if conscious, do not induce vomiting, monitor for symptom development, get medical attention if feeling unwell
Notes for Physicians: Provide symptomatic treatment as required, no specific antidote known

Fire-Fighting Measures

Suitable Extinguishing Media: Use water spray, dry chemical, or carbon dioxide extinguishers
Fire and Explosion Hazards: Product itself does not burn; use standard firefighting procedures; avoid inhaling fumes produced by fire exposure
Specific Hazards Arising from Chemical: In case of fire, potassium oxides or phosphorus oxides may form
Special Protective Equipment: Firefighters wear full protective clothing including self-contained breathing apparatus
Hazardous Combustion Products: Smoke, irritating gases, potassium or phosphorus oxides possible

Accidental Release Measures

Personal Precautions: Wear appropriate dust mask, safety goggles and gloves during cleanup
Environmental Precautions: Keep on paved or soil surface, avoid product entry to waterways, storm drains or soil in large quantities
Methods for Clean-Up: Sweep up spilled material and place in labeled container for safe disposal, use damp methods to minimize airborne dust, flush small residues with large amounts of water if local regulations allow
Additional Advice: Ensure good ventilation in spill area, wash surfaces after removal measures

Handling and Storage

Handling: Use with adequate ventilation, minimize dust formation, avoid contact with skin and eyes, do not breathe dust, wash thoroughly after handling
Storage: Store in tightly closed container, place away from incompatible substances (strong acids, strong oxidizers), keep in cool, dry ventilated location, protect from moisture
Packaging Materials: Compatible with polyethylene, polypropylene, or other chemically resistant containers
Special Precautions: Do not store in unlabeled or open containers, maintain product integrity by keeping sealed

Exposure Controls and Personal Protection

Occupational Exposure Limits: No regulatory occupational exposure limit is established for dipotassium phosphate; workplace dust limits for nuisance dust may apply (typically 10 mg/m3 inhalable, 3 mg/m3 respirable)
Engineering Controls: Use local exhaust ventilation or process enclosure for dust-generating operations
Personal Protective Equipment: Safety goggles to protect eyes, chemical-resistant gloves to protect hands, dust masks or respirators for airborne dust in bulk handling, protective clothing for prolonged exposure
Hygiene Measures: Wash hands before eating, do not eat, drink, smoke, or store food in work area
Environmental Controls: Minimize release to the environment using good work practices

Physical and Chemical Properties

Appearance: White crystalline powder or granules
Odor: Odorless
Odor Threshold: Not applicable
pH: Aqueous solution typically between 8.5 and 9.5
Melting Point / Freezing Point: Decomposes before melting at 204°C
Boiling Point: Not applicable (decomposes)
Flash Point: Not flammable
Evaporation Rate: Not applicable
Flammability: Not flammable
Upper/Lower Flammability Limits: Not applicable
Vapor Pressure: Negligible at ambient temperature
Vapor Density: Not applicable
Relative Density: About 2.44 g/cm3 at 20°C
Solubility: Very soluble in water
Partition Coefficient: Not established for n-octanol/water
Auto-ignition Temperature: Not applicable
Decomposition Temperature: Decomposes on heating above 204°C
Viscosity: Not applicable

Stability and Reactivity

Chemical Stability: Stable under normal conditions of temperature and pressure
Possibility of Hazardous Reactions: Not reactive under regular storage or handling conditions
Conditions to Avoid: Excess heat, moisture, contact with strong acids or strong oxidizers
Incompatible Materials: Strong acids, strong oxidizing agents (may release irritating/toxic gases), aluminum, magnesium (may corrode metals over time)
Hazardous Decomposition Products: Potassium oxides, phosphorous oxides at high temperatures

Toxicological Information

Likely Routes of Exposure: Inhalation, ingestion, skin, and eye contact
Acute Toxicity: LD50 oral in rats around 4,260 mg/kg (low toxicity); unlikely to cause significant harm if swallowed in small quantities
Skin Corrosion/Irritation: Slight irritation possible on prolonged or repeated contact
Serious Eye Damage/Irritation: May cause transient irritation
Respiratory Sensitization: Dust may irritate nose, throat with repeated exposure
Reproductive Toxicity: No evidence indicating harm to fertility or unborn child
Carcinogenicity: Not listed by IARC, NTP, OSHA
Mutagenicity: No mutagenic effects reported in standard tests
Repeated Dose Toxicity: No chronic effects documented in workplace experience or testing
Other Information: Use appropriate personal protection to minimize contact and risk

Ecological Information

Ecotoxicity: Not classified as toxic to the aquatic environment under GHS standards, excessive concentrations may disrupt aquatic plant or algal growth patterns by altering nutrient balance
Persistence and Degradability: Phosphates remain in solution, subject to natural dissipation; unlikely to break down to simpler substances quickly
Bioaccumulation Potential: Potential for bioaccumulation is low
Mobility in Soil: High water solubility means leaching into groundwater may occur in large accidental releases
Other Adverse Effects: Overuse near waterways may contribute to eutrophication and possible algal blooms due to phosphate enrichment
Environmental Precautions: Prevent uncontrolled release to waterways, rivers, and lakes

Disposal Considerations

Waste Treatment Methods: Dispose of contents or container as non-hazardous waste in accordance with local regulations
Disposal of Product: Rinse empty containers before recycling or disposal; bulk residues may be dissolved and flushed with large quantities of water if permitted
Disposal of Packaging: Containers are suitable for recycling after thorough cleaning
Special Disposal Precautions: Avoid generating dust during packaging disposal, prevent spills to drains, never combine with incompatible materials before disposal

Transport Information

UN Number: Not applicable
UN Proper Shipping Name: Not regulated as dangerous goods for transport
Transport Hazard Class: None assigned
Packing Group: Not assigned
Environmental Hazards: Not classified as marine pollutant
Special Precautions: Ship in tightly sealed, labeled packaging to avoid spillage, follow standard hygiene and safety practices during transport
Transport in Bulk: Comply with bulk shipping rules for solid chemicals

Regulatory Information

OSHA Classification: Not classified as hazardous under OSHA Hazard Communication Standard (29 CFR 1910.1200)
TSCA Status: Listed on US Toxic Substances Control Act inventory
REACH Status: Registered in the European Union; no identified hazard classification under CLP
SARA Title III: Not subject to reporting (Sections 302/304/313)
Canadian DSL: Listed in the Domestic Substances List
Labeling Requirements: Product labels must carry pictogram, hazard and precautionary statements
Other Regulations: Food use subject to relevant national and international standards for food chemicals; workplace use subject to standard chemical safety rules