Description

Calcium Selenite CAS NO 13780-18-2 is an inorganic compound of calcium and selenium, valued as a controlled-release source of the essential trace element selenium. This compound is critical for industries requiring precise selenium supplementation or chemical synthesis. It is primarily utilized in the manufacturing of animal feed premixes, nutritional supplements, and specialized glass and ceramic formulations.

Application

• Animal Nutrition & Feed Additives: A key selenium source for feed premixes to prevent deficiencies and support livestock health.
• Dietary Supplements: Used in the formulation of human and veterinary mineral supplements for controlled selenium delivery.
• Glass & Ceramics Manufacturing: Acts as a decolorizing or coloring agent and can impart specific optical properties to specialty glasses.
• Chemical Synthesis & Catalysis: Serves as a precursor or reagent in the synthesis of other selenium compounds and in certain catalytic processes.
• Electronics & Semiconductors: Used in the production of some photoconductors and semiconductor materials.
• Laboratory & Research: Employed as a standard or reagent in analytical chemistry and life science research.

Basic Information

Product Name	Calcium Selenite
CAS No.	13780-18-2
Molecular Formula	CaSeO3
Molecular Weight	167.04 g/mol
Synonyms	Calcium selenite; Selenious acid, calcium salt; Calcium selenite (1:1); Calcium selenium oxide; Calcium monoselenite; Calciumsulfit (German); EINECS 237-424-2
EINECS	237-424-2

Quality Control

Our Calcium Selenite is produced under a rigorous quality management system. Each batch is tested to ensure compliance with relevant purity and safety standards. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profiles, and physical specifications is provided with every shipment to guarantee traceability and consistency for your applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from incompatible materials such as strong acids and reducing agents. Hygroscopic (moisture-sensitive).

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms
Assay (CaSeO3)	≥ 98.0 %
Selenium Content	46.0 - 48.0 %
Calcium Content	23.0 - 25.0 %
Loss on Drying	≤ 2.0 %
Heavy Metals (as Pb)	≤ 20 ppm
Arsenic (As)	≤ 5 ppm
Chloride (Cl)	≤ 0.1 %
Sulfate (SO4)	≤ 0.5 %

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