Description
SPECIFICATIONS
CAS 1668-00-4
Molecular weight: 776.37
Formula: C22H18As2N4O14S2
Appearance: Deep brown powder
Assay (HPLC): > 85 %
Sulphated ash: < 0.2 %
Loss on drying (120°C): < 8 %
Specific extinction (1%/1cm): 300 – 450
Maximum of absorption (in water): 535 – 543
Specific extinction (1%/1cm): 300 – 450
Max. of absorption (in buffer pH 10): 571 – 576
Pb: < 10 ppm
Ca: < 100 ppm
Cr: < 50 ppm
Cd: < 50 ppm
Fe: < 100 ppm
Cu: < 50 ppm
Storage: Room Temperature
Stability: At least 2 years at R.T