CAS Registry Number

CAS 1668-00-4 — Arsenazo III

Arsenazo III is a chromogenic reagent used in analytical chemistry for the detection and quantification of metal ions, particularly rare earth elements and calcium. It forms colored complexes with these ions, enabling spectrophotometric analysis. Available with CAS number 1668-00-4, molecular formula C22H18As2N4O14S2, and molecular weight 776.37 g/mol. Stored at ambient temperature. Hazard classification includes signal word Danger. Molekula supplies Arsenazo III from research to bulk quantities with full documentation and ISO 9001:2015 traceability.

Also known as: Arsenazo III >95%