Disodium Hydrogen phosphate dihydrate

Disodium Hydrogen phosphate dihydrate

Disodium hydrogen phosphate dihydrate, also known as disodium phosphate dihydrate or Na2HPO4·2H2O, is a chemical compound with the formula Na2HPO4·2H2O. It is a crystalline solid that consists of two sodium cations (Na+) and one dihydrogen phosphate anion (HPO42-) combined with two water molecules (H2O).

Disodium hydrogen phosphate dihydrate is commonly used as a food additive, buffering agent, emulsifier, and pH regulator in various industries. It has a wide range of applications, including in the production of beverages, processed foods, and pharmaceuticals. Additionally, it is utilized in laboratory settings for various chemical and biological experiments.

The compound is highly soluble in water, which contributes to its effectiveness as a pH buffer. It can act as both a weak acid and a weak base, making it useful in maintaining a stable pH level in solutions. Its versatile properties and easy availability make disodium hydrogen phosphate dihydrate a commonly employed chemical in numerous applications.



Disodium hydrogen phosphate dihydrate (Na2HPO4·2H2O) has several major and common uses across various industries. Here are some of the most notable applications:

  1. Food Industry: Disodium hydrogen phosphate dihydrate is used as a food additive in processed foods and beverages. It acts as a buffering agent and emulsifier, helping to stabilize and maintain the pH of food products. It is also used as a nutrient supplement in certain food formulations.
  2. Pharmaceuticals: The compound is utilized in the pharmaceutical industry as a pH regulator and buffering agent in the formulation of medications. It helps adjust the acidity or alkalinity of solutions and ensures the stability of active pharmaceutical ingredients.
  3. Water Treatment: Disodium hydrogen phosphate dihydrate is employed in water treatment processes, specifically as a builder or sequestering agent. It helps to control water hardness and prevent the formation of scale and deposits in boilers and cooling systems.
  4. Laboratory Applications: Due to its ability to act as a pH buffer, disodium hydrogen phosphate dihydrate is commonly used in laboratory settings for various chemical and biological experiments. It helps maintain a stable pH environment, which is crucial for many analytical and research procedures.
  5. Cleaning Products: The compound can be found in some cleaning agents, particularly those designed for industrial or commercial use. It aids in removing stubborn stains and serves as a pH adjuster in cleaning formulations.
  6. Cosmetics and Personal Care Products: Disodium hydrogen phosphate dihydrate may be utilized in certain cosmetics and personal care products. It can function as a pH adjuster, stabilizer, or emulsifying agent, ensuring the stability and efficacy of these formulations.

It’s important to note that these applications are not exhaustive, and there may be other uses of disodium hydrogen phosphate dihydrate in specific industries or processes.


There are no reviews yet.

Be the first to review “Disodium Hydrogen phosphate dihydrate”

Your email address will not be published. Required fields are marked *

Safety Guidelines

When using disodium hydrogen phosphate dihydrate (Na2HPO4·2H2O), it is essential to follow appropriate safety measures to ensure safe handling and minimize potential risks. Here are some general safety guidelines:
  1. Personal Protective Equipment (PPE): Wear appropriate PPE, including gloves, safety goggles, and a lab coat or protective clothing, when handling disodium hydrogen phosphate dihydrate. This helps protect your skin, eyes, and body from potential contact or exposure.
  2. Ventilation: Work in a well-ventilated area or use local exhaust ventilation to prevent the accumulation of dust or vapors. This helps minimize the inhalation of airborne particles and ensures a safe working environment.
  3. Storage: Store disodium hydrogen phosphate dihydrate in a cool, dry place away from incompatible substances. Follow any specific storage recommendations provided by the manufacturer, such as temperature requirements or restrictions on storage with certain chemicals.
  4. Handling: Avoid direct contact with disodium hydrogen phosphate dihydrate powder or solutions. In case of contact, immediately wash the affected area with plenty of water. Prevent the inhalation of dust by using appropriate handling techniques, such as minimizing dust generation and using dust control measures.
  5. Spills and Cleanup: In the event of a spill, promptly clean it up following appropriate procedures. Use suitable absorbent materials and tools to collect the spilled material and dispose of it properly. Avoid dispersing the powder or solution into the environment.
  6. Disposal: Dispose of disodium hydrogen phosphate dihydrate in accordance with local regulations and guidelines. Follow proper waste disposal procedures, including any specific requirements for the substance, such as neutralization or treatment before disposal.
  7. Read and Follow Instructions: Always read and follow the manufacturer’s instructions, safety data sheets (SDS), and any other provided documentation before handling or using disodium hydrogen phosphate dihydrate. Familiarize yourself with any hazards, precautions, or recommended practices specific to the product.
It is important to note that these safety measures are general guidelines and may not cover all potential hazards or situations. For specific information regarding the safe handling and use of disodium hydrogen phosphate dihydrate, refer to the manufacturer’s instructions and consult with appropriate safety professionals or experts.

Related Products