Sodium Dihydrogen Phosphate

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Sodium Dihydrogen Phosphate (NaH₂PO₄) is a white crystalline powder or granule, highly soluble in water. It is widely used as a buffering agent, emulsifier, and pH adjuster in various industrial, food, pharmaceutical, and laboratory applications. It acts as a source of phosphate ions and helps maintain the stability and consistency of formulations. This chemical is commonly utilized in food processing, water treatment, detergents, and as a reagent in chemical synthesis.

Description

Sodium Dihydrogen Phosphate

Primary Uses 

  • Food Industry
    • Used as an acidity regulator and emulsifier in processed foods, cheeses, and bakery products.
    • Acts as a leavening agent component in baking powders.
    • Serves as a sequestrant and stabilizer to improve texture and shelf life.
  • Pharmaceuticals
    • Utilized as a buffering agent in intravenous saline solutions and oral rehydration salts.
    • Ingredient in laxatives and phosphate supplements.
    • Helps maintain pH in pharmaceutical formulations and tablet coatings.
  • Water Treatment
    • Employed to control pH and prevent scale formation in water systems.
    • Used in wastewater treatment processes to remove heavy metals.
  • Industrial Applications
    • Functions as a dispersing agent and corrosion inhibitor in metal finishing and detergents.
    • Acts as a buffering agent in textile and dyeing industries.
  • Laboratory & Chemical Synthesis
    • Used as a reagent and buffer in analytical chemistry and molecular biology protocols.
    • Facilitates phosphate-buffered saline (PBS) preparation.

Secondary Uses 

  • Agriculture
    • Occasionally used in fertilizer formulations to supply phosphorus nutrients.
  • Cosmetics and Personal Care
    • Employed in formulations as a pH adjuster and stabilizer in creams and lotions.
PRODUCT KEY FEATURES

Basic Identification Attributes

  • Chemical Name (IUPAC): Sodium dihydrogen phosphate
  • Common/Trade Name: Sodium Dihydrogen Phosphate, Monobasic Sodium Phosphate
  • CAS Number: 7558-80-7
  • HS Code: 2835.29
  • Synonyms: Monosodium phosphate, Sodium phosphate monobasic

Physical & Chemical Properties

  • Physical State: Solid (powder or granules)
  • Color & Odor: White; odorless
  • Solubility: Highly soluble in water
  • Density: Approx. 2.35 g/cm³
  • pH (1% aqueous solution): ~4.5

 

Safety & Hazard Attributes

  • GHS Classification: Generally considered non-hazardous; mild irritant to eyes and skin
  • Toxicity: Low toxicity; safe for use in food-grade and pharmaceutical-grade applications
  • Exposure Limits: Follow standard occupational exposure limits; avoid dust inhalation

 

Storage & Handling Attributes

  • Storage Conditions: Store in a cool, dry, well-ventilated area, away from moisture and incompatible materials
  • Container Type: Supplied in sealed plastic bags or drums
  • Shelf Life: Stable under proper storage conditions for several years
  • Handling Precautions: Avoid inhalation of dust; use protective equipment to prevent eye and skin contact
  • Storage Measures: Keep containers tightly closed and stored in a dry environment

 

Regulatory & Compliance Attributes

  • Complies with food-grade (FCC), pharmaceutical-grade (USP), and reagent-grade standards
  • Approved by FDA, EFSA, and other international food and drug safety authorities
  • Manufactured according to GMP guidelines

 

Environmental & Health Impact

  • Biodegradability: Readily biodegradable
  • Ecotoxicity: Low toxicity to aquatic life in typical use concentrations
  • Bioaccumulation: Not expected to bioaccumulate
SAFETY HANDLING PRECAUTIONS

Safety Handling Precautions

  • PPE Required: Protective gloves, safety goggles, and dust mask recommended during handling
  • Handling Guidelines: Avoid inhaling dust; ensure good ventilation
  • Storage Measures: Store away from strong oxidizers and moisture

 

First Aid Measures

  • Inhalation: Move to fresh air; seek medical advice if respiratory irritation occurs
  • Skin Contact: Wash affected area with soap and water; seek medical advice if irritation develops
  • Eye Contact: Rinse immediately with plenty of water for 15 minutes; seek medical attention if irritation persists
  • Ingestion: Rinse mouth; seek medical attention if large quantities are ingested

 

Firefighting Measures

  • Fire Hazards: Non-flammable
  • Extinguishing Media: Use water spray, foam, dry chemical, or CO₂ as appropriate for surrounding fire
  • Special Precautions: None specific to this chemical
  • Hazardous Combustion Products: None known