• Chemical Manufacturer of Laboratory Reagents, Bulk Inorganics and Organics for Process Chemistry Since 1928.

Analytical Analytical Primary Standards Primary Standards 365 DISODIUM DIHYDROGEN ETHYLENEDIAMINETETRAACETATE DIHYDRATE DISODIUM DIHYDROGEN ETHYLENEDIAMINETETRAACETATE DIHYDRATE PRIMARY STANDARD (NaO₂CCH₂)₂NC₂H₄N(CH₂CO₂H)₂•2H₂O 372.26 6381,92,6 6381926 92,6 638192,6 6381 92 6 NR 1-1-0 0.000 A primary standard material for EDTA titration work, W,J, Blaedel and H,T, Knight, Anal, Chem, 26,743 1954 36021 80.90 100 G 36022 194.80 500 G Assay 99.9%-100.1% Insoluble 0.005% pH of 5% solution 4.0-6.0 Heavy Metals (Pb) 0.005% Iron 0.01%