Arsenic Trioxide

CAS Number1327-53-3
Molecular FormulaAs2O3
Molecular Weight197.841
InChI KeyQTLQKAJBUDWPIB-UHFFFAOYSA-N
Synonyms
  • Arsenic oxide (As2O3)
  • Arsentrioxide
  • Arseni trioxydum
  • Arsenious trioxide
  • Claudetite
  • Trixenox
  • Oxyde Arsenieux
  • Arsenious Acid Anhydride
  • Acide arsenieux
  • Arsenic blanc
  • Arsenigen saure
  • Anhydride arsenieux
  • DTXSID0020103
  • EPA Pesticide Chemical Code 007001
  • UN 1561
  • S7V92P67HO
  • DTXCID60820620
  • Flu Nausea
  • Ars Alb
  • Arsenicum Oxydatum
  • NHS Flu Nausea
  • tetra-arsenic oxide
  • Arsenicum album 3C
  • Arsenicum album 6C
  • Tetra Arsenic Oxide
  • Arsenicum album 30
  • Arsenicum album 30X
  • Arsenicum Album 30C
  • ARSENIC ALB
  • tetra-arsenic hexaoxide
  • Ars Alb 30C
  • RefChem:5565
  • Tetra Arsenic Hexaoxide
  • Arsenicum Album 200C
  • Arsenicum album 7104
  • Arsenicum Album 200ck
  • Arsenicum Album Kit Refill
  • bicyclo(1.1.1)diarsoxane
  • Rxhomeo Homeopathic Combo 24
  • Arsenicum album 30XSpecial Order
  • Arsenicum album 6X Special Order
  • Arsenicum album 30X Special Order
  • Arsenicum 6/12/30 Special Order
  • Bestmade Natural Products Arsenicum Album
  • 215-481-4
  • 1327-53-3
  • Arseneous anhydride
  • Arseneous oxide
  • Arsenic (III) oxide
  • Arsenic Oxide (As4O6)
  • Arsenic sesquioxide
  • arsenic trioxide
  • arsenic(III) oxide
  • Arsenicum Album
  • Arsenious acid
  • Arsenious oxide
  • Arsenolite
  • Arsenous acid anhydride
  • Arsenous Anhydride
  • Arsenous oxide
  • Arsenous oxide anhydride
  • Arsodent
  • As2O3
  • As4O6
  • Claudelite
  • Crude arsenic
  • NSC-759274
  • NSC-92859
  • Tetraarsenic Hexaoxide
  • Trisenox
  • White arsenic
  • arsenic(3+);oxygen(2-)
  • Arsenic(III) trioxide
  • Arsenox
  • Caswell No. 059
  • Rcra waste number P012
  • RCRA waste no. P012
  • Trixonex
  • CCRIS 5455
  • HSDB 419
  • EINECS 215-481-4
  • UN1561
  • AI3-01163
  • UNII-S7V92P67HO
  • SCHEMBL526381
  • Arsenic trioxide [USAN:JAN]
  • QTLQKAJBUDWPIB-UHFFFAOYSA-N
  • Tox21_112255
  • NSC 92859
  • NSC 759274
  • Arsenic trioxide [UN1561] [Poison]
  • CAS-1327-53-3
  • NS00076140
  • EC 215-481-4
  • SR-01000944371
  • SR-01000944371-1

Applications:

Uv-Vis Spectrum of Arsenic Trioxide

March 18, 2026

Access the UV-Vis Spectrum SIELC Library

If you are looking for optimized HPLC method to analyze Arsenic Trioxide check our HPLC Applications library

For optimal results in HPLC analysis, it is recommended to measure absorbance at a wavelength that matches the absorption maximum of the compound(s) being analyzed. The UV spectrum shown can assist in selecting an appropriate wavelength for your analysis. Please note that certain mobile phases and buffers may block wavelengths below 230 nm, rendering absorbance measurement at these wavelengths ineffective. If detection below 230 nm is required, it is recommended to use acetonitrile and water as low UV-transparent mobile phases, with phosphoric acid and its salts, sulfuric acid, and TFA as buffers.
For some compounds, the UV-Vis Spectrum is affected by the pH of the mobile phase. The spectra presented here are measured with an acidic mobile phase that has a pH of 3 or lower.

Application Analytes:
Arsenic Trioxide
SIELC Technologies usually develops more than one method for each compound. Therefore, this particular method may not be the best available method from our portfolio for your specific application. Before you decide to implement this method in your research, please send us an email to research@sielc.com so we can ensure you get optimal results for your compound/s of interest.