Formula: C₃₂H₂₂N₆Na₂O₆S₂ impregnated on paper CAS: 573-58-0 EC No.: 209-358-4 M (Molar Mass): 696.66 g/mol D (Density): Not applicable mp (Melting Point): Not applicable bp (Boiling Point): Not applicable Optical Rotation: Not applicable

Dye Content: Uniformly impregnated with Congo Red Paper Type: High-quality filter paper, pH neutral Color: Red pH Transition: Blue 3.0 – 5.2 Red Response Time: ≤ 15 seconds for complete color change Dimensions: Typically 7×70 mm strips Box Count: 100 or 200 strips per box Color Chart: Provided for comparison Humidity Resistance: Stable under normal laboratory conditions