Arsenic(III) oxide, 100.0%, Certified® Ultrapure ACS (primary standard) 10g

CERTIFICATE OF ANALYSIS

• Cat 2154814-CUA-PS   10 GM   Lot MAL-3668-KFA
• Certified® Ultrapure ACS   
• primary standard
• 100.0%     
• CAS 1327-53-3

• Antimony (Sb) 0.04%
• Appearance white powder
• Assay (K₂Cr₂O₇ titration) 100.0%
• Boiling point 465°C
• Chloride (Cl) <0.002%
• Density 3.738
• Flash point 465°C (sublimed)
• Identification conforms
• Insoluble in NH₄OH <0.002%
• Iron (Fe) <0.0005%   
• Lead (Pb) <0.001%
• Loss on drying <0.01%
• Melting point 312.3°C
• Molecular formula As₂O₃
• Molecular weight 197.84
• Refractive index
• Residue after ignition <0.02%
• Solubility in dilute acids and alkalies, slightly soluble in water
• Sulfide (as S) <0.001% pass
• Retest 06/2025