Disodium Hydrogen Phosphate Uses Properties and Safety Guidelines

Anhydrous disodium hydrogen phosphate (Na ₂ HPO ₄ ), a seemingly unremarkable white powder commonly found in laboratories, plays a crucial role across scientific research, pharmaceutical development, and food production. With a molecular weight of 141.98 and CAS number 7558-79-4, this inorganic compound serves as an essential component in numerous applications.

Known alternatively as di-Sodium hydrogen phosphate or sec-Sodium phosphate, this water-soluble salt forms alkaline solutions when dissolved. The anhydrous form remains stable in dry environments but requires careful handling to avoid reactions with strong acids or bases.

The compound's versatility spans multiple industries:

• Scientific Research: Serves as a fundamental component in phosphate buffer solutions for maintaining stable pH levels in biochemical and molecular biology experiments
• Pharmaceuticals: Functions as an effective excipient to enhance drug solubility and absorption
• Food Technology: Acts as a multifunctional additive with roles including:
  • Emulsification and stabilization
  • pH regulation
  • Texture improvement in dairy products
  • Water retention enhancement in processed meats

While widely used, proper safety measures are essential when working with anhydrous disodium hydrogen phosphate:

• Personal protective equipment (gloves, eye protection) should always be worn
• Immediate flushing with water is required for skin or eye contact
• Storage requires cool, dry, well-ventilated areas away from ignition sources

The compound (Glentham Code: GK3179) remains commercially available through standard chemical suppliers, with current pricing at £8.40. Quality assurance through reputable vendors is recommended for all procurement.

This essential chemical continues to support advancements across scientific and industrial sectors, with its proper understanding and application contributing to research quality and production efficiency.