Product Name: Dipotassium Hydrogen Phosphate
Chemical Formula: K₂HPO₄
Synonyms: Potassium Phosphate Dibasic, Phosphoric Acid, Dipotassium Salt
CAS Number: 7758-11-4
Recommended Use: Laboratory reagent, buffer, fertilizer, food additive
Supplier: Listed on manufacturer’s label
Emergency Contact: Refer to supplier’s emergency number for incidents
GHS Classification: Not classified as hazardous under GHS criteria
Hazard Statements: May cause mild irritation to eyes, skin, and respiratory tract
Pictogram: No pictogram required
Signal Word: No signal word assigned
Precautionary Statements: Avoid breathing dust, wash skin after handling, use eye protection if dust is generated
Potential Health Effects: Inhalation may produce coughing or minor throat discomfort, eye contact or skin contact can sometimes trigger mild irritation or redness, ingesting large amounts could bring on nausea or minor gastrointestinal effects, no known chronic health concerns at typical exposures
Chemical Name: Dipotassium Hydrogen Phosphate
Common Name: K2HPO4
Concentration: Typically between 98–100%
Impurities: Traces of other phosphate salts may be present but remain insignificant
Inhalation: Move person to fresh air, encourage deep breathing, seek medical attention if symptoms don’t resolve
Skin Contact: Rinse skin with water and mild soap, remove contaminated clothing, persistent redness or discomfort may require medical attention
Eye Contact: Rinse eyes with water for several minutes, remove contact lenses if possible, wait for symptoms to improve but contact medical help for prolonged irritation
Ingestion: Rinse mouth and drink water, don’t induce vomiting, consult medical support if large amounts have been swallowed or symptoms persist
Suitable Extinguishing Media: Use water spray, foam, carbon dioxide, or dry chemical for surrounding fire
Specific Hazards: While not flammable, decomposing in extreme heat might release potassium oxides and phosphorus oxides
Protective Equipment: Firefighters should grab self-contained breathing apparatus and standard protective gear
Special Procedures: Prevent run-off from entering drains or watercourses if possible during extinguishing
Personal Precautions: Avoid breathing in dust, ventilate the area, put on dust mask and safety goggles
Spill Cleanup: Scoop up solid material and place in a suitable container for disposal, rinse residuals with plenty of water
Environmental Measures: Minimize entry to drains, surface water, or soil, contain and collect spills with absorbent material if needed
Handling: Work in well-ventilated spaces, reduce dust generation by handling with care, wear gloves and safety eyewear
Storage: Store in sealed original containers out of direct sunlight, keep in a dry location at room temperature, store away from acids and moisture-prone materials, label storage area clearly to prevent mix-ups
Occupational Exposure Limits: No established limits for dipotassium hydrogen phosphate under OSHA or ACGIH
Engineering Controls: Use local exhaust or general ventilation to keep airborne levels low
Personal Protective Equipment: Wear tightly fitted safety glasses, disposable gloves, dust mask if fine dust is present, closed shoes and protective clothing
Hygiene Measures: Wash hands before eating, drinking, smoking or leaving work area, avoid taking contaminated work clothing home
Appearance: White crystalline powder or granules
Odor: Odorless
Melting Point: Around 340°C (decomposes)
Solubility: Freely soluble in water
pH (1% solution): About 9
Boiling Point: Not applicable
Vapor Pressure: Negligible
Density: 2.44 g/cm³
Flash Point: Not flammable
Chemical Stability: Remains stable under normal handling and storage conditions
Conditions to Avoid: Extreme moisture, contact with acids can generate heat and cause splattering
Incompatible Materials: Strong acids, ammonium salts
Hazardous Decomposition: Very high temperatures may create phosphorus oxides and potassium oxide fumes
Likely Exposure Routes: Inhalation, skin and eye contact, ingestion
Acute Effects: Mild irritation of respiratory tract, eyes, or skin in sensitive individuals, ingestion of large quantities may upset digestive system
Chronic Effects: No evidence suggests chronic toxicity or carcinogenicity from normal handling
Toxicity Data: LD50 (Rat, oral) approx 3,000 mg/kg, considered low toxicity
Acute Aquatic Toxicity: Low toxicity to aquatic life at typical environmental concentrations
Persistence and Degradability: Dissolves and disperses easily in water, breaks down to potassium and phosphate ions
Bioaccumulation: Unlikely to build up in living creatures
Mobility in Soil: Mobile in soil, phosphate ions can bind with soil minerals
Other Effects: May cause localized algal blooms if released in large amounts into bodies of water
Waste Treatment: Small amounts can be dissolved in large volumes of water and flushed to sewer where permitted by regulations
Regulatory Disposal: Consult local environmental agency for requirements, do not dump into lakes or natural waterways
Container Disposal: Empty packaging thoroughly before recycling or disposal, rinse containers to remove all residues
UN Number: Not regulated
Transport Hazard Class: Not hazardous for ground, air, or sea transport
Packing Group: Not assigned
Special Precautions for Transport: Secure tightly, prevent moisture uptake, segregate from acids
Inventory Listings: Appears on TSCA (USA), EINECS (EU), DSL (Canada), AICS (Australia)
OSHA: Not classified as hazardous under OSHA criteria
WHMIS Classification: Not subject to WHMIS requirements
SARA Title III: Not listed under Sections 302, 304, 313
Other Regulations: Check specific regional and national regulations for further information and periodic updates, some food or fertilizer uses may require additional authorizations
