Description

Sodium Chromate Cr51 CAS NO 10039-53-9 is a radioactive diagnostic agent where the chromium atom is the radioactive isotope Chromium-51. This compound is critical for precise medical and research applications due to its specific gamma emission properties. It is primarily utilized in nuclear medicine for hematological studies, including the measurement of red blood cell volume, survival, and sequestration.

Application

• Red Blood Cell (RBC) Volume and Survival Studies: The primary medical application for labeling red blood cells to determine total blood volume, red cell mass, and mean red cell lifespan in clinical diagnostics.
• Gastrointestinal Protein Loss Assessment: Used in specialized tests, such as the Cr-51 albumin test, to diagnose and quantify protein-losing enteropathies.
• Research in Cell Membrane Permeability: Serves as a radioactive tracer in biomedical research to study erythrocyte membrane integrity and kinetics.
• Industrial Tracer Applications: Employed in controlled industrial settings as a γ-emitting tracer for flow dynamics, corrosion studies, and process monitoring.
• Radiopharmaceutical Precursor: Acts as a starting material or intermediate in the synthesis of more complex radiopharmaceuticals in licensed facilities.

Basic Information

Product Name	Sodium Chromate Cr51
CAS No.	10039-53-9
Molecular Formula	Na251CrO4
Molecular Weight	~161.97 g/mol (for 51Cr isotope)
Synonyms	Sodium Chromate (51Cr); Chromium-51 Sodium Chromate; Chromate (51Cr) Sodium Salt; 51Cr-Sodium Chromate; Sodium Chromate Cr 51; Radiolabeled Sodium Chromate; Chromitope Sodium (historical trade name); Diagnostic Grade Sodium Chromate-51
EINECS	233-139-7 (for the non-radioactive base compound)

Quality Control

Every batch of Sodium Chromate Cr51 is manufactured and tested under strict radiopharmaceutical-grade controls. Quality assurance includes rigorous testing for radiochemical purity, radionuclidic purity, specific activity, pH, and sterility (where applicable). All production complies with relevant Good Manufacturing Practice (GMP) guidelines for radioactive materials. A comprehensive Certificate of Analysis (COA) detailing assay results, calibration date, and specific activity is provided with each shipment.

Storage

Preserve in the original, tightly closed container provided by the manufacturer. This product is strictly light-sensitive and must be protected from all light exposure. Store in a designated, secure radioactive materials storage area at room temperature (15-25°C) in accordance with all local and international regulations for radioactive substances. Shield appropriately.

Specification

Item	Specification
Appearance	Clear, colorless to slightly yellow solution
Identification (Gamma Spectrometry)	Characteristic spectrum for Chromium-51
Radiochemical Purity (Chromatography)	≥ 95%
Radionuclidic Purity	≥ 99.9%
Specific Activity	Contact for details
pH	7.0 - 8.0
Carrier Content	Low, specified per batch

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.