In scientific research, the precision and reproducibility of experiments hinge on the quality of the reagents used. Sodium Dihydrogen Phosphate Dihydrate (CAS 13472-35-0), often found in laboratory settings, requires specific attention to its grade and purity when intended for molecular biology, biochemistry, or analytical chemistry. Understanding these specifications is crucial for researchers aiming to buy the right product.

The Importance of Grade and Purity:

While the basic chemical formula remains the same, different applications demand varying levels of purity. For general industrial use, standard technical grades may suffice. However, for scientific applications like preparing precise buffer solutions, enzyme assays, or gel electrophoresis, higher purity grades are essential. These typically include:

  • Molecular Biology Grade: This grade is often tested for the absence of DNases, RNases, and proteases, which are critical for molecular biology experiments where these enzymes could degrade nucleic acids or proteins.
  • Analytical Reagent (AR) Grade: Meets strict specifications for purity and low levels of impurities, making it suitable for analytical procedures, titrations, and the preparation of standard solutions.
  • Pharmacopeia Grades (USP, Ph. Eur.): While primarily for pharmaceutical use, these grades also signify high purity and rigorous quality control, often making them suitable for demanding scientific applications.

Key Specifications to Check When Buying:

When you intend to buy Sodium Dihydrogen Phosphate Dihydrate for scientific use, pay close attention to:

  • Assay: The percentage purity of the compound, typically expected to be high (e.g., 98% or more on a dried basis).
  • pH of Solution: The expected pH range of a standard solution (e.g., 4.0-4.5 for a 5% solution) is a direct indicator of its buffering capability.
  • Insoluble Matter: Low levels of insoluble matter are crucial for preparing clear solutions.
  • Heavy Metals and Other Impurities: Limits on elements like lead, arsenic, iron, and specific ions (chloride, sulfate) are vital to avoid interference in analytical or biological systems.

Partnering with a Scientific Supplier

Sourcing these specialized grades requires partnering with a chemical supplier that understands the nuances of laboratory requirements. Ningbo Inno Pharmchem Co., Ltd. is committed to providing high-purity chemicals for research and development. We offer detailed specification sheets and certificates of analysis for our products. If your lab requires Sodium Dihydrogen Phosphate Dihydrate for critical experiments, contact us for a quote and to discuss your specific purity needs. Ensuring the quality of your raw materials is the first step towards reliable scientific outcomes.