Sodium phosphate dibasic heptahydrate, also known as disodium hydrogen phosphate heptahydrate, is a chemical compound with significant applications in the life science marketplace. It is a hydrated form of sodium phosphate dibasic, meaning it contains seven water molecules per molecule of the compound.

• It is primarily used as a buffering agent and as a source of phosphate ions
• Buffers help maintain a stable pH in biological and biochemical processes, ensuring optimal conditions for enzymatic reactions, cell culture, and other molecular biology techniques

It is also commonly used in laboratory settings for the preparation of buffer solutions with specific pH ranges and buffering capacities. It is particularly useful in applications where a higher pH range is required, as it has a buffering capacity in the alkaline pH range.

Moreover, the compound is used in various biological and biochemical assays, protein purification processes, and the formulation of diagnostic kits and pharmaceutical products. It serves as a source of phosphate ions, which are essential for numerous biological processes such as DNA and RNA synthesis, energy metabolism, and signal transduction.