S P E C I F I C A T I O N S

(ETHYLENEDINITRILO)TETRAACETIC ACS  (EDTA)

N,N,N’,N’-Ethylenediaminetetraacetic Acid ACS

Synonyms:						EDTA, Free Acid; Edetic acid; (Ethylenedinitrilo)tetraacetic Acid

CAS No:						60-00-4

Chemical Formula:					C10H16N2O8
  
Formula Weight:					292.25

Appearance:						White to off-white powder

Identification:					Conforms to standard and structure

Melting Point:					220 – 240 Deg. C (with dec.)

Assay							99.4 - 100.6%

Insoluble in dilute ammonium hydroxide:	0.005% maximum

Residue after ignition:				0.2% maximum

Nitrilotriacetic acid [(HOCOCH4)3N]		0.1% maximum

Calcium (Ca):					0.001% maximum

Magnesium (Mg)					5 ppm maximum

Heavy metals (as Pb)				0.001% maximum

Iron (Fe)						0.005% maximum

Effective Date: 01/16/09