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Reference: B-026

5-Br-PAPS

5 - Br - PAPS 2-(5-Bromo-2-pyridylazo)-5-(N-n-propyl-N-(3- sulfopropyl)amino)phenol, disodium salt, dihydrate C₁₇H₁₉BRN₄Na₂O₄S.2H₂O.

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CAS # 158905-17-0
Chemical name: 2-(5-Bromo-2-pyridylazo)-5-(N-n-propyl-N-(3-sulfopropyl)amino)phenol, disodium salt, dihydrate
Molecular formula: C₁₇H₁₉BRN₄Na₂O₄S.2H₂O
Molecular weight: 537.34
Appearance: Reddish brown crystalline powder
Water (Karl Fisher): 5 - 10 %
Solubility (50ml/100ml H₂O): Clear, reddish orange
Absorbance (blank): < 0.04 (552nm)
Absorbance: > 0.42
Sulfated ash: < 30 %
IR spectrum: Authentic
Storage: 2-8 °C. Protect from moisture and light
Stability: At least 12 months at 2-8°C.

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