DTPA ACID with CAS 67-43-6

What is DTPA ACID with CAS 67-43-6? 

Diethylenetriaminepentaacetic acid is used as chelating agent and forms complexes with metal ions. It finds application as a magnetic resonance imaging (MRI) contrasting agent, since it improves the image by forming a complex with a gadolinium ion.

Specification

ITEM	STANDARD	RESULT
Appearance	White crystal powder	Conform
Assay	≥ 99.0%	99.4%
Chloride(CI)%	≤ 0.01%	0.003%
Sulfate(SO4)%	≤ 0.05%	0.02%
Iron(Fe)%	≤0.001%	0.0002%
Lead(Pb)%	≤0.001%	Negative
Chelating value	≥ 252	253
Sodium Carbonate dissolution test	Qualified	Qualified
Loss on drying%	≤ 0.2%	0.13%

Application 

Packing

25kgs/drum,9tons/20’container

25kgs/bag,20tons/20’container