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CODE: km-353 Product name: m—Methyl red CAS No: 20691-84-3 Molecular Formula: C15H15N3O2 Molecular weight: 269.30 PH indicator range: 2.0(red)- 4.0(yellow) Residue on ignition (as sulfate): 0.2%max Methanol soluble test: qualified Bromine oxidization test : qualified