Phenol red, AnalaR NORMAPUR® ACS, Reag. Ph. Eur. indicator
:143-74-8
:
:C₁₉H₁₄O₅S
:MFCD00003552
:354.38 g/mol
- pH Range (Yellow-Red):6.8 - 8.2
- Clarity of Solution:Passes Test
- Absorption Maximum λ1 (pH 1.2):503 - 506
- Absorption Maximum λ2 (pH 3.0):430 - 435
- Absorption Maximum λ3 (pH 6.5):430 - 435
- Absorption Maximum λ4 (pH 8.8):557 - 560
- Absorptivity (A1%/1 cm; λ1, on Dried Sample):900 - 1100
- Absorptivity (A1%/1 cm; λ2; on Dried Sample):500 - 700
- Absorptivity (A1%/1 cm; λ3, on Dried Sample):500 - 700
- Absorptivity (A1%/1 cm; λ4, on Dried Sample):1000 - 1200
- Insoluble in C₂H₅OH:Passes Test
- Copper (Cu):≤0,005
- Iron (Fe):≤0,005
- Lead (Pb):≤0,005
- Nickel (Ni):≤0,005
- Loss on Drying (110 °C):≤5