Description

Cobalt(II) Selenite Dihydrate is an inorganic salt of cobalt and selenious acid, supplied as a high-purity solid. This compound serves as a critical precursor and specialty reagent in advanced material synthesis and industrial catalysis. It is primarily required by manufacturers and research institutions in the fields of catalyst development, ceramic pigments, and electronic materials.

Application

• Catalyst Precursor: Used in the synthesis of heterogeneous catalysts for oxidation and desulfurization processes.
• Pigment & Ceramic Industry: Acts as a source of cobalt and selenium for producing stable blue and green ceramic glazes and glass colorants.
• Electronic Materials: A starting material for the deposition of cobalt selenide thin films, which have applications in semiconductors and photovoltaic devices.
• Chemical Synthesis: Serves as a specialized reagent in inorganic and organometallic synthesis.
• Research & Development: Utilized in academic and industrial R&D for exploring new catalytic systems and material properties.
• Nutritional Supplement Manufacturing: As a source of selenium in the formulation of specific animal feed additives (subject to appropriate grade and regulatory approval).

Basic Information

Product Name	Cobalt(II) Selenite Dihydrate
CAS No.	19034-13-0
Molecular Formula	CoSeO3 · 2H2O
Molecular Weight	217.89 g/mol (anhydrous basis: 181.89)
Synonyms	Cobaltous Selenite Dihydrate; Cobalt Monoselenite Dihydrate; Selenious Acid, Cobalt(2+) Salt, Dihydrate; Cobalt(2+) Selenite Dihydrate; Cobalt Selenite (1:1) Dihydrate; CoSeO3·2H2O; Cobalt(II) Selenite Hydrate
EINECS	Contact for details

Quality Control

Our Cobalt(II) Selenite Dihydrate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise chemical and physical specifications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment to guarantee traceability and consistency for your critical 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). This material is hygroscopic (moisture-sensitive) and should be kept away from strong acids and reducing agents.

Specification

Item	Specification
Appearance	Pink to red crystalline powder
Identification (IR)	Conforms
Assay (CoSeO3·2H2O)	≥ 98.0 %
Loss on Drying	≤ 16.5 %
Insoluble Matter	≤ 0.1 %
Chloride (Cl)	≤ 0.01 %
Sulfate (SO4)	≤ 0.02 %
Heavy Metals (as Pb)	≤ 0.002 %

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