Description

Selenious(IV) Acid is a vital inorganic compound, primarily known as selenous acid, with the chemical formula H₂SeO₃. This versatile chemical serves as a key precursor and reagent in numerous industrial and research processes due to its strong oxidizing properties. It is essential for manufacturers and R&D facilities in the electronics, glass, metallurgy, and fine chemical synthesis sectors seeking a reliable source of high-purity selenium compounds.

Application

• Glass Manufacturing: Used as a decolorizing and coloring agent to produce ruby-red and pink glass, as well as to neutralize the green tint from iron impurities.
• Electronics & Semiconductors: Acts as a crucial raw material for the production of selenium rectifiers, photoelectric cells, and xerographic drums.
• Metallurgy: Employed in the electroplating and surface treatment of metals to impart specific functional or decorative coatings.
• Chemical Synthesis: Serves as a key intermediate and oxidizing agent in the synthesis of various organoselenium compounds and other specialty chemicals.
• Nutritional Supplements & Animal Feed: Used in the controlled production of sodium selenite and other selenium salts, which are essential micronutrients.
• Laboratory Reagent: Utilized in analytical chemistry as a standard and reagent for titrations and other quantitative analyses.

Basic Information

Product Name	Selenious(IV) Acid
CAS No.	7783-00-8
Molecular Formula	H2SeO3
Molecular Weight	128.97 g/mol
Synonyms	Selenous Acid; Selenium Dioxide Hydrate; Selenium(IV) Oxide Trihydrate; Selenious Acid; Hydrogen Selenite; Dihydrogen Selenite; H2SeO3
EINECS	231-974-7

Quality Control

Our Selenious(IV) Acid is manufactured under strict quality management protocols to ensure batch-to-batch consistency and high purity. We provide comprehensive quality documentation, including Certificates of Analysis (COA) that detail assay, impurity profiles, and other critical parameters. Our production adheres to relevant ISO standards, and specifications can be tailored to meet specific customer requirements, including technical and reagent grades.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture. As a strong oxidizer, it should be stored separately from combustible materials, reducing agents, and strong acids.

Specification

Item	Specification
Appearance	White crystalline solid or powder
Identification (IR)	Conforms
Assay (H₂SeO₃)	≥ 97.0 %
Clarity of Solution	Clear and colorless
Chloride (Cl)	≤ 0.005 %
Sulfate (SO₄)	≤ 0.01 %
Iron (Fe)	≤ 0.001 %
Heavy Metals (as Pb)	≤ 0.001 %

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