Congo red, C.I. 22120, certified (Direct red 28)
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Congo red, C.I. 22120, certified (Direct red 28)
CAS Number: 573-58-0
Anionic metachromatic dye. Good contrast stain or counterstain. Specific stain for amyloids in pathology. Also, a pH indicator; transition interval: pH 3.0 (blue) to 5.0 (red). λ max: 497nm
Molecular Weight: 696.67
References: Histochem. Cytochem, 10, 355 (1962)
Hazards: Unknown
Handling: Gloves & chemical goggles
Storage: Store at room temperature
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