The pure free base is a colorless oily liquid, but, like many amines, older samples assume a yellowish color due to impurities resulting from air oxidation.

The branched isomer tris(2-aminoethyl)amine and piperazine derivatives may also be present in commercial samples of TETA.

[14] It is indicated for the treatment of Wilson's disease in adults, adolescents and children five years of age or older who are intolerant to D-penicillamine therapy.

[15] It is indicated for the treatment of Wilson's disease in adults, adolescents and children five years of age or older who are intolerant to D-penicillamine therapy.

[15] In the United States, Valeant Pharmaceuticals International raised the price of its Syprine brand of TETA from $625 to $21,267 for 100 pills over five years.