Triglycine sulfate

Triglycine sulfate (TGS) is a chemical compound with a formula (NH₂CH₂COOH)₃·H₂SO₄. The empirical formula of TGS does not represent the molecular structure, which contains protonated glycine moieties and sulfate ions. TGS with protons replaced by deuterium is called deuterated TGS or DTGS; alternatively, DTGS may refer to doped TGS. TGS and DTGS crystals are pyroelectric and ferroelectric and have been used as detector elements in infrared spectroscopy.