Description

Selenium77 CAS NO 14681-72-2 is a stable, non-radioactive isotope of selenium, specifically the isotope with an atomic mass of 77. This high-purity isotopic material is essential for advanced research and industrial applications where precise atomic composition is critical. It is primarily utilized in nuclear magnetic resonance (NMR) spectroscopy, metabolic tracer studies, and the development of specialized semiconductors and photoconductors.

Application

• Nuclear Magnetic Resonance (NMR) Spectroscopy: Used as an isotopic label or reference standard in NMR studies of selenium-containing compounds and biological systems.
• Metabolic Tracer Research: Employed in biochemical and pharmacological research to trace selenium metabolism and incorporation into proteins and enzymes.
• Semiconductor & Photoconductor Development: Serves as a dopant or component in the synthesis of advanced semiconductor materials with specific electronic properties.
• Analytical Standards & Calibration: Provides a high-purity reference material for the calibration of analytical instruments like ICP-MS and AAS.
• Isotope Geochemistry & Environmental Studies: Used as a tracer to study selenium cycles and isotopic fractionation in geological and environmental systems.
• Nutritional & Biomedical Research: Investigates the role of specific selenium isotopes in human health, disease models, and selenoprotein function.

Basic Information

Product Name	Selenium-77
CAS No.	14681-72-2
Molecular Formula	77Se
Molecular Weight	76.92 g/mol
Synonyms	Selenium-77 isotope; 77Se; Selenium, isotope of mass 77; Selenium 77; Stable Selenium-77; Selenium (77Se); Selenium isotopic standard 77Se
EINECS	Contact for details

Quality Control

Our Selenium-77 is produced and handled under stringent quality management protocols to ensure exceptional isotopic and chemical purity. Each batch is analyzed using advanced techniques including Inductively Coupled Plasma Mass Spectrometry (ICP-MS) to verify isotopic enrichment and assess trace metallic impurities. A comprehensive Certificate of Analysis (COA) detailing isotopic purity, chemical assay, and impurity profiles is provided with every shipment to support your critical research and development needs.

Storage

Preserve in a tightly closed container, protected from light. Store at controlled room temperature (15-25°C) in a dry, well-ventilated area. Keep the container sealed to prevent contamination and minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	Gray to black solid
Isotopic Purity (77Se)	≥ 99.0%
Chemical Purity (Assay)	≥ 99.9% (metals basis)
Identification (ICP-MS)	Complies
Trace Metals (ICP-MS)	≤ 100 ppm total

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