6-(p-Toluidino)-2-naphthalenesulfonic Acid Sodium Salt size:1 GM Test Specification Min Max INSOLUBLE

Test Specification Min Max INSOLUBLE IN DILUTE (10%) NH[@4@]OH AS REPORTED AS REPORTED WATER SOLUBLE SALTS MAX

Test Specification Min Max ASSAY (w/w) 20

15% ELEMENTAL IMPURITIES AS REPORTED IDENTIFICATION TO PASS TEST EXPIRATION DATE DATE OF MANUFACTURE APPEARANCE RESIDUAL SOLVENTS TO PASS TEST TO PASS TEST

Test Specification Min Max ASSAY 90% VOLATILE MATTER (@ 135 C) 5% MATTER INSOLUBLE IN BOTH

20% RESIDUE AFTER EVAPORATION 1 mg/L ALL AROMATICS TO PASS TEST TO PASS TEST 2-BUTANONE 100 ng/mL ACETONE 50 ng/mL METHYL ISOAMYL KETONE 50 ng/mL ALL OTHER DETECTABLE KETONES 50 ng/mL DICHLOROMETHANE 50 ng/mL CHLOROFORM 50 ng/mL CARBON TETRACHLORIDE 50 ng/mL ALL OTHER DETECTABLE CHLOROHYDROCARBONS 50 ng/mL PENTANE 50 ng/mL HEXANE 50 ng/mL HEPTANE 50 ng/mL 2

6-(p-Toluidino)-2-naphthalenesulfonic Acid Sodium Salt size:1 GM Test Specification Min Max INSOLUBLETest Specification Min Max APPEARANCE