Sodium Dihydrogen Phosphate
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.
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.
1. 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
2. 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
3. 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
4. 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
5. 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
6. Environmental & Health Impact
- Biodegradability: Readily biodegradable
- Ecotoxicity: Low toxicity to aquatic life in typical use concentrations
- Bioaccumulation: Not expected to bioaccumulate
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
Related products
Calcium Sulphate
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Folic Acid
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Iodised Salt
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Magnesium Chloride Hexahydrate BP
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Magnesium Sulphate (Epsom Salt)
Magnesium Sulphate Epsom Salt, commonly known as Epsom Salt, is an inorganic salt composed of magnesium, sulfur, and oxygen with the formula MgSO₄. It typically appears as colorless or white crystalline granules and is highly soluble in water. In its heptahydrate form (MgSO₄·7H₂O), it is widely used in agriculture, pharmaceuticals, food, and industrial applications. Epsom Salt is valued for its muscle relaxant, laxative, and magnesium supplementation properties, as well as for its role in improving soil fertility and plant growth.
Potassium Citrate
Potassium Citrate is a potassium salt of citric acid, appearing as a white, crystalline, water-soluble powder. It is widely used in food, pharmaceutical, agricultural, and industrial applications due to its buffering, alkalizing, and sequestrant properties. Potassium Citrate helps regulate acidity and provides potassium ions critical for various biochemical and physiological functions.
Potassium Iodide
Potassium Iodide is a white, crystalline inorganic salt that serves as a vital source of iodine. It is widely used in medical, pharmaceutical, nutritional, and industrial fields. Potassium Iodide is highly soluble in water and is used both as a dietary supplement to prevent iodine deficiency and as a protective agent against radioactive iodine exposure. It also finds applications in chemical synthesis and photographic processes.
Potassium Lactate
Potassium Lactate is the potassium salt of lactic acid, typically available as a clear, colorless to pale yellow liquid or solid powder. It functions primarily as a food additive, humectant, and preservative with antimicrobial properties. Widely used in the food industry, it also finds applications in pharmaceuticals, cosmetics, and industrial processes. Potassium Lactate helps improve moisture retention, extend shelf life, and enhance safety by inhibiting microbial growth.

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