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DISODIUM DIHYDROGEN ETHYLENEDIAMINETETRAACETATE DIHYDRATE PRIMARY STANDARD
ITEM#:365
(NaO2CCH2)2NC2H4N(CH2CO2H)2•2H2O
CAS#:6381-92-6
F.W.:372.26
NFPA#:1-1-0
Specific Gravity: 0.000
DOT:NR
Descriptions: A primary standard material for EDTA titration work. W.J. Blaedel and H.T. Knight, Anal. Chem., 26,743 (1954)
Specification
TEST
1. Assay 99.9%-100.1%
2. Insoluble 0.005% max
3. pH of 5% solution 4.0-6.0
4. Heavy Metals (Pb) 0.005% max
5. Iron 0.01% max
Properties
No properties.