Product Name: Sodium Hydrogen Phosphate
Chemical Formula: Na2HPO4
CAS Number: 7558-79-4
Synonyms: Disodium phosphate, Disodium hydrogen phosphate
Recommended Use: Often applied as a buffering agent in labs, food additive, and in water treatments
Supplier Details: Information varies based on manufacturer; check packaging or vendor for address and emergency contacts
Emergency Phone Number: Refer to local regulations or product label for up-to-date contact
Classification: Not considered hazardous under GHS for most common uses
Health Hazards: May cause mild irritation to eyes, skin, and respiratory tract
Environmental Hazards: Not associated with widespread aquatic or terrestrial harm, though dumping large quantities in water may disrupt pH balance
Pictograms: No pictograms needed under most regulatory systems
Precautionary Statements: Avoid inhalation of dust, contact with eyes, and prolonged skin exposure
Chemical: Sodium Hydrogen Phosphate Anhydrous
Concentration: Above 98% by weight
Other Ingredients: Typical preparations contain water as part of the hydrate, with minimal impurities
Nature: Inorganic salt
Eye Contact: Rinse with clean water for several minutes, lift eyelids to ensure thorough rinsing; seek medical attention if irritation lingers
Skin Contact: Remove contaminated clothing, wash skin thoroughly with water and soap
Inhalation: Move to fresh air promptly; seek medical help if breathing issues persist
Ingestion: Rinse mouth with water; do not induce vomiting; drink water if fully conscious; get medical evaluation if discomfort arises
Suitable Extinguishing Media: Water spray, foam, carbon dioxide, dry chemical agents—all work well
Special Hazards: Sodium oxides may develop if the salt decomposes under intense flame
Firefighter Protection: Use basic firefighting gear including gloves, goggles, and breathing protection
Combustibility: Material itself does not burn, so focus falls on surroundings
Personal Precautions: Use proper dust control, avoid breathing any dust, ventilate area if working inside
Environmental Precautions: Prevent bulk quantities from entering drains or waterways
Clean-Up Methods: Sweep up dry material, avoid creating dust clouds, transfer to containers for disposal; wash down spill site if needed
PPE: Gloves, dust mask, goggles recommended during cleanup
Handling: Minimize dust creation, work with tidy habits, keep containers sealed
Conditions to Avoid: High humidity and water may cake the powder; store at stable temperatures
Storage Requirements: Store in cool, dry, ventilated place in tightly closed containers
Incompatibilities: Strong acids trigger release of phosphoric acid, so keep those far apart
Exposure Limits: No established occupational exposure limits for most uses
Engineering Controls: Use local exhaust and general ventilation to keep dust levels low
Personal Protective Equipment: Eye protection, gloves, dust mask or respirator if airborne dust rises
Hygiene Measures: Wash hands after handling, clean work clothes regularly
Appearance: White crystalline granules or powder
Odor: Odorless
Melting Point: Decomposes above 250°C
Boiling Point: Not applicable
Solubility: Highly soluble in water
pH: Around 9.0 (1% solution)
Vapor Pressure: Negligible
Relative Density: About 1.52 (for anhydrous salt)
Chemical Stability: Product remains stable under normal storage situations
Hazardous Reactions: Strong acids kick off phosphoric acid fumes and sodium salts; strong oxidizers may create extra risk
Decomposition Products: Phosphorus and sodium oxides show up at high heat
Conditions to Avoid: Dampness, acids, and open flames
Acute Toxicity: Considered low—estimated oral LD50 (rat) is above 17,000 mg/kg
Inhalation: Breathing in dust might lead to coughing, short-term throat irritation
Skin Contact: Sometimes dries or irritates skin after repeated exposure
Eye Contact: Causes mild, short-lived irritation if direct contact
Chronic Effects: No known major issues from long-term, low-dose exposure; quantities used in food have widespread regulatory approval
Environmental Impact: Phosphate ions spark quick growth in aquatic plants if dumped into ponds, upsetting balance
Persistence / Degradability: Inorganic salts get diluted or absorbed by soil, do not break down like organics
Aquatic Toxicity: Practically non-toxic to fish at realistic levels, but algae blooms may pop up if a lot reaches waterways
Mobility in Soil: Spreads rapidly with groundwater—best to minimize spills
Waste Handling: Small amounts dilute well with plenty of water, but don’t toss drums or big bags down drains
Container Disposal: Clean out packaging before recycling, or follow local hazardous waste procedures
Regulatory Status: Not considered hazardous waste but stave off careless dumping by following local rules
UN Number: Not regulated for transport
Proper Shipping Name: Sodium Hydrogen Phosphate
Transport Hazard Classes: Not applicable
Packing Group: Not assigned
Label Requirements: No special label rules
Special Precautions: Make sure containers stay closed to avoid spilling powder
GHS Label Elements: No label elements required beyond basic identification
Inventory Listing: Recognized under TSCA (USA), REACH (EU), and other major chemical inventories
Restrictions: Food and pharmaceutical uses follow stricter guidelines; technical grade comes with fewer controls
Other Regulations: National and municipal limits on phosphate discharge may shape disposal practices, especially around water
