Arsenic Trioxide
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This article is compiled based on the United States Pharmacopeia (USP) – 2025 Edition
Issued and maintained by the United States Pharmacopeial Convention (USP)
As2O3 197.84 CAS RN®: 1327-53-3.—Use ACS reagent grade. [Note—Arsenic Trioxide of a quality suitable as a primary standard is available from major vendors of analytical reagents as a primary standard, or as a volumetric standard, or as certified reference material.
