CAS Registry Number

CAS 1327-53-3 — Arsenic (III) oxide - Secondary standard

Arsenic (III) oxide is a highly toxic inorganic compound primarily used as a secondary analytical standard for calibration in laboratories, as well as in the production of pesticides, glass, and semiconductors. It is a white, odorless powder with high purity requirements for precise chemical analysis. This secondary standard has a CAS number of 1327-53-3, a molecular formula of As₂O₃, and a molecular weight of 197.8414 g/mol. It must be stored at ambient conditions and handled with extreme caution, as it carries a **Danger** signal word due to its acute toxicity. Molekula supplies Arsenic (III) oxide from research to bulk quantities with full documentation and ISO 9001:2015 traceability.

Also known as: Arsenic (III) oxide