Description

Sodium Selenite Pentahydrate is an essential inorganic compound of selenium, widely recognized for its role as a critical micronutrient and versatile chemical intermediate. Its primary commercial value lies in providing a bioavailable source of selenium, a vital trace element required for numerous biological and industrial processes. This product is indispensable for manufacturers in the animal nutrition, pharmaceutical, glass manufacturing, and agricultural sectors seeking a reliable and consistent selenium source.

Application

• Animal Feed Additive: A key component in premixes to prevent selenium deficiency disorders and support immune function in livestock and poultry.
• Pharmaceutical & Nutraceutical Ingredient: Used in the formulation of dietary supplements and specific pharmaceutical preparations as a source of selenium.
• Glass Manufacturing: Acts as a decolorizing agent to neutralize the green tint caused by iron impurities in glass batches.
• Agricultural & Horticultural Uses: Employed in trace element fertilizers and foliar sprays to correct selenium deficiencies in soils and crops.
• Chemical Synthesis: Serves as a precursor for producing other selenium compounds and catalysts in organic chemistry.
• Electroplating & Metallurgy: Used in specific electroplating baths and as an additive in metal alloys.

Basic Information

Product Name	Sodium Selenite Pentahydrate
CAS No.	26970-82-1
Molecular Formula	Na2SeO3 · 5H2O
Molecular Weight	263.01 g/mol
Synonyms	Disodium selenite pentahydrate; Selenious acid, disodium salt, pentahydrate; Sodium selenium oxide pentahydrate; Selenite (SeO32-), disodium, pentahydrate; Selenium sodium oxide (Na2SeO3) pentahydrate; EINECS 231-320-1 (anhydrous basis)
EINECS	Contact for details

Quality Control

Our Sodium Selenite Pentahydrate is produced under a stringent quality management system. We offer various grades, including Technical and Feed/Food grades, with specifications tailored to meet industry-specific requirements such as USP/NF, FCC, or feed additive directives. Every batch undergoes rigorous analytical testing to ensure purity, potency, and consistency. Comprehensive Certificates of Analysis (COA) documenting assay, heavy metal limits, and other critical parameters are available upon request.

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); ensure the container is kept tightly sealed to prevent absorption of atmospheric moisture and caking.

Specification

Item	Specification
Appearance	White or almost white crystalline powder
Identification (IR)	Conforms
Assay (as Na2SeO3·5H2O)	≥ 98.0 %
Assay (as Se)	Contact for details
Solubility (in water)	Clear, colorless solution
Loss on Drying	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm
Arsenic (As)	≤ 5 ppm
Chloride (Cl)	Contact for details
Sulfate (SO4)	Contact for details

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