Selenium trioxide

三氧化硒

Also known as: EINECS 237-385-1, Selenium oxide (SeO3), Selenium oxide (SeO3) (6CI,7CI,8CI,9CI), Selenium oxide (SeO3)(6CI,7CI,8CI,9CI), Selenium trioxide ISO 9001:2015 REACH, Selenium(VI) oxide, Selenium(VI) trioxide, Seleniumtrioxide, Selentrioxid, oxoselane dioxide, selenium(VI)-oxide

Selenium trioxide (CAS 13768-86-0) is a compound in the Inorganic Chemicals category listed in the Jingsj chemical database. It has the molecular formula O3Se and a molecular weight of 126.95800 g/mol. It is also known as EINECS 237-385-1, Selenium oxide (SeO3) and Selenium oxide (SeO3) (6CI,7CI,8CI,9CI). Key property: a melting point of 120(分解)ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
13768-86-0
Jingsj CID
J-1990331-6
Molecular Formula
O3Se
Chinese Name
三氧化硒
Molecular Weight
126.95800 g/mol
Category
Inorganic Chemicals
Last updated
8/21/2026

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Physicochemical Properties

Melting Point120(分解)ºC

Frequently Asked Questions

What is the CAS number of Selenium trioxide?

The CAS number of Selenium trioxide is 13768-86-0.

What are the molecular formula and molecular weight of Selenium trioxide?

Selenium trioxide has molecular formula O3Se and molecular weight 126.95800 g/mol.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "Selenium trioxide (CAS 13768-86-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1990331-6 (accessed 2026-10-23).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.