1-Hydroxyethane-11-diphosphonic Acid (ca. 60 Percent in Water ca. 4.2mol/L) HNO-releasing Reagents Test Specification Min Max ASSAY

Test Specification Min Max ASSAY [(COOH)[@2@][-2H[@2@]O] 99

1 ppb MOLYBDENUM (Mo) 0

Test Specification Min Max MELTING POINT 70 C 70 C CLARITY AND ABSORBANCE OF SOLUTION TO PASS TEST TO PASS TEST SENSITIVITY TO FERROUS IRON TO PASS TEST TO PASS TEST RETEST DATE

00% ELEMENTAL IMPURITIES: COPPER (Cu) AS REPORTED AS REPORTED IDENTIFICATION (A) SPECTRUM SPECTRUM IDENTIFICATION (B) RETENTION RETENTION EXPIRATION DATE DATE OF MANUFACTURE APPEARANCE RESIDUAL SOLVENTS AS REPORTED AS REPORTED

Test Specification Min Max ASSAY (DRIED BASIS) 99 102

1-Hydroxyethane-11-diphosphonic Acid (ca. 60 Percent in Water ca. 4.2mol/L) HNO-releasing Reagents Test Specification Min Max ASSAY