5-Br-PSAA

Reference: PSA-05C

5-Br-PSAA

2-(5-Bromo-2-pyridylazo)-5-(N-n-propyl-N-(3- sulfopropyl)amino)aniline,sodium salt C₁₇H₂₁BrN₅NaO₃S .

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This chromogen is used for the detection of Fe(II) and Co(III) in clinical chemistry reagents. EDTA can dissolve
Cu(II) and Ni(II) cmplexes so it is useful to determine Fe in the presence of Cu and Ni. Fe(II) complexe absorbs
at 558nm / 89,000.
CAS 87035-60-7
Name 2-(5-bromo-2-pyridylazo)-5-(N-propyl-N-sulfopropylamino)aniline
Appearance: Reddish orange or orange powder
Molecular weight: 478.34
Molecular formula: C₁₇H₂₁BrN₅NaO₃S
Absorbance : > 0.40 (458 nm)
(1.03 x 10-5 M in buffer)
Molar absorptivity: > 86 000 (558 nm) (Fe++ complex)
Solubility: 5 mg/10 ml water
Storage: 2 – 8 °C. Keep tightly closed. Protect from metal. Store in a dry place.
Stability: At least one year at 2 - 8 °C.

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