What is this chemical, or what does it do? Is it dangerous? diethylenediamine dichloride cobalt 3 chloride?

Question

It is a greenish turquoisish powder with the grains being about the size of grains from gun powder residue. Its chemical make up is

[Co(en)sub2 Cl sub2]Cl

The name written out is diethylenediamine dichloride cobalt 3 chloride

Answer 1

CAS registry number: [10241-04-0]
Synonyms:
cobalt (III) chloride
cobalt chloride
cobalt trichloride
cobaltic chloride

Very Toxic Material Causing Other Toxic Effects

Answer 2

As far as I know, the only use if this transition metal complex is in examination questions. It has three isomers. There is a trans form, and the cis form is optically active, with two enantiomers.