Description

Ammonium Selenite is an inorganic salt of selenium, widely recognized for its role as a versatile selenium source. This compound is crucial for applications requiring precise selenium content and high chemical purity. It is primarily utilized in the electronics industry, glass manufacturing, and as a reagent in analytical chemistry and life science research.

Application

• Glass Manufacturing: Used as a decolorizing or coloring agent to produce red and pink tints in specialty glass and ceramics.
• Electronics & Semiconductors: Serves as a precursor in the production of selenium-containing thin films and photovoltaic materials.
• Analytical Chemistry: Employed as a standard or reagent in analytical methods for selenium determination and other laboratory syntheses.
• Nutritional Supplements & Animal Feed: Acts as a source of selenium in trace mineral premises, following strict purity and safety guidelines.
• Catalyst Production: Used in the formulation of catalysts for various chemical processes, including oxidation reactions.
• Research & Development: A key starting material in academic and industrial R&D for developing new selenium-based compounds.

Basic Information

Product Name	Ammonium Selenite
CAS No.	7783-19-9
Molecular Formula	(NH4)2SeO3
Molecular Weight	163.04 g/mol
Synonyms	Diammonium selenite; Selenious acid, diammonium salt; Ammonium selenite(IV); EINECS 231-985-7

Quality Control

Our Ammonium Selenite is produced under a stringent quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise chemical specifications and is free from unintended contaminants. A Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment to guarantee traceability and consistency for your critical processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Due to its hygroscopic nature, keep the container tightly sealed to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	White crystalline powder
Identification (IR)	Conforms
Assay (as (NH4)2SeO3)	≥ 98.0 %
Solubility (in water)	Clear, colorless solution
Loss on Drying	≤ 2.0 %
Heavy Metals (as Pb)	≤ 20 ppm
Chloride (Cl)	≤ 0.01 %
Sulfate (SO4)	≤ 0.02 %

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