Selenium dioxide, 99.999%

Name: Selenium dioxide, 99.999%
Brand: Vaqora Chemicals
SKU: VQ-000953

About Selenium dioxide, 99.999%

Selenium dioxide is a synthetic reagent carrying the CAS registry number 7446-08-4 with a typical assay of 99.999%. The compound has the formula O2Se, corresponding to a molecular weight of 110.97 g/mol. Alternative names: Selenium oxide and Selenious anhydride.

In its supplied form it is white to off-white powder or crystalline powder or chunks. Literature values give a melting point of 315 °C and a density of 3.95 g/cm3. Store sealed in a dry, well-ventilated location away from incompatible materials. Under GHS it is labelled “Danger”, so handle it with suitable PPE and consult the SDS.

Key uses span organic synthesis, reaction development, medicinal chemistry and ceramics and glass. Our customers for this product work in academic and industrial research.

Standard pack sizes are 10 g, 50 g and 1 kg, and every batch ships with a Certificate of Analysis (COA) and we export worldwide.

Typical applications

Organic synthesis
Reaction development
Medicinal chemistry
Ceramics & glass

Industries

Specifications & identifiers

Chemical identifiers
Product name	Selenium dioxide, 99.999%
Catalogue No.	VQ-000953
CAS Number	7446-08-4
IUPAC name	selenium dioxide
Molecular formula	O₂Se
Molecular weight	110.97 g/mol
Exact mass	111.9064
Purity / assay	99.999%
HSN code	28112990
InChIKey	JPJALAQPGMAKDF-UHFFFAOYSA-N
SMILES	O=[Se]=O
PubChem CID	24007

Physical properties
Physical form	Powder
Appearance	White to off-white powder or crystalline powder or chunks
Melting point	315 °C
Density	3.95 g/cm3
H-bond donors / acceptors	0 / 2
TPSA	34.1 Å²
UN number	UN 3283
Synonyms	Selenium oxide, Selenious anhydride, Selenium oxide (SeO2), Selenium dioxide dimer, Selenous acid anhydride, Selenium oxide (Se2O4), Selenium(IV) dioxide (1:2), Selenium oxide (1:2), Oxide, Selenium, (oxo-lambda4-selanylidene)oxidane, Dioxide, Selenium, Selenium(IV) oxide

Safety & hazard information (GHS)

Corrosive

Toxic

Health hazard

Environmental hazard

Signal word: Danger

Hazard statements

H301Toxic if swallowed
H314Causes severe skin burns and eye damage
H318Causes serious eye damage
H331Toxic if inhaled
H373May causes damage to organs through prolonged or repeated exposure
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects

Precautionary statements: P260, P261, P264, P264 + P265, P270, P271, P273, P280, P301 + P316, P301 + P330 + P331, P302 + P361 + P354, P304 + P340, P305 + P354 + P338, P316, P317, P319, P321, P330, P363, P391, P403 + P233, P405, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Other grades of CAS 7446-08-4

Selenium dioxide, 99.9%

CAS: 7446-08-4
Formula: O₂Se
MW: 110.97 g/mol

VQ-000952

Synthesis

Selenium dioxide, 99%

CAS: 7446-08-4
Formula: O₂Se
MW: 110.97 g/mol

VQ-000951

Frequently asked questions

What is the CAS number of Selenium dioxide, 99.999%?

The CAS Registry Number of Selenium dioxide, 99.999% is 7446-08-4. It is also known as Selenium oxide, Selenious anhydride, Selenium oxide (SeO2).

What is the molecular formula and molecular weight of Selenium dioxide, 99.999%?

Selenium dioxide, 99.999% has the molecular formula O2Se and a molecular weight of 110.97 g/mol. Its IUPAC name is selenium dioxide.

Which grade and pack sizes of Selenium dioxide, 99.999% can I order?

We supply Selenium dioxide, 99.999% in (99.999%) grade, in 10 g, 50 g, 1 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Selenium dioxide, 99.999%?

Yes. Every lot of Selenium dioxide, 99.999% is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Selenium dioxide, 99.999% be shipped internationally?

Yes. Selenium dioxide, 99.999% is classified as hazardous (UN 3283), so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.