Purity (DSC (differential scanning calorimetry)): ≥ 99 %

Identity (IR-spectrum): passes test

Appearance of solution (in pyridine): passes test

pH-value (aqueous suspension): 5.0 - 6.5

Melting range (DSC (differential scanning calorimetry)): 178 - 183 °C

Spec. Absorptivity A 1%/1cm (of the As-complex; 525 nm; 0.00033 %; 1 cm; pyridine): ≥ 1500

Nitrate (NO₃): ≤ 0.01 %

Loss on Drying (105 °C): ≤ 0.5 %

Sensitivity (for determination of arsenic): passes test