ProductPara Toludine Ortho Sulfonic Acid (PTOSA)Synonym1 Methyl 4 Amino Benzene 2 Sulfonic AcidCAS #118-88-7STRUCTURAL FORMULAMolecular FormulaC 7H9NO3SMolecular Weight187Physical AppearanceLight Brown ColourPurity98% Min. Dry PowderSolubility9 GPLInsolubles0.2% Max.PNTSANIL Download Specification