EDTA disodium salt dihydrate 99.0-101.0% Ph. Eur., USP, BP, JP, ACS

Assay99.0 --> 101.0 %

Assay (dried basis)99.0 --> 101.0 %

Appearance:-

White or almost white crystalline powderPasses test

Identification (IR)Passes test Ph.Eur./BP

Identification BPasses test Ph.Eur./BP

Identification BPasses test USP

Identification (Na)Passes test

Identification 1Passes test JP

Identification 2Passes test JP

Clarity and colour of solutionPasses test JP

CN (Cyanide)Passes test JP

Solution SPasses test Ph.Eur./BP

Appearance of solutionPasses test Ph.Eur./BP

pH (1 %)4.3 --> 4.7

pH (5 %)4.0 --> 5.5

Impurity A (*)Max. 0.1 %

Insoluble matterMax. 50 ppm

Loss on drying (150°C; 6 h)8.7 --> 11.4 %

Sulphated ash37.0 --> 39.0 %

Fe (Iron)Max. 80 ppm

Heavy metals (as Pb)Max. 20 ppm

Residual solventsPasses test

As (Arsenic)Max. 2 ppm

Cd (Cadmium)Max. 1 ppm

Co (Cobalt)Max. 1 ppm

Hg (Mercury)Max. 3 ppm

Ni (Nickel)Max. 1 ppm

Pb (Lead)Max. 3 ppm

V (Vanadium)Max. 6 ppm

Conforms to Ph.Eur./USP/BP/JP/ACSPasses test

分子式: C₁₀H₁₄N₂Na₂O₈·2H₂O

分子量: 372,24 g/mol

溶点: 255 °C

存储条件: ambient