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Code: km-318 Product name: Fluorescein CAS No. 2321-07-5 MF: C20H12O5 MW: 332.31 Maximum absorption wave-length λ(PH8.0): 490-493 nm Mass-absorption coefficient λ(PH8.0)L/cm·g: 200 min. Ethanol soluble test: qualified Sensitive test: qualified Loss on drying: 5.0%max Residue on ignition(as sulfate): 0.3%max