νίτρ-ον, τό,
in [[ 5th c.BC: Herodotus Historicus ] Refs 5th c.BC+] and Attic dialect λίτρον (which see), sodium carbonate, [[ 7th-6th c.BC: Sappho Lyrica 165, 5th c.BC: Hippocrates Medicus “Aër.” 7, 4th c.BC: Aristoteles Philosophus “Meteorologica” 383b12, “IG” 9(1).691 (Corc., 3rd c.BC), “PCair.Zen.” 304.7 (3rd c.BC), “PTeb.” 182 (2nd c.BC), 2nd c.AD: Galenus Medicus 13.265; ν. ἐρυθρόν 5th c.BC: Hippocrates Medicus “περὶ γυναικείης φύσιος” 32, compare “Mul.” 1.98 ] Refs 7th c.BC+]; ν. θαλάσσιον, i.e. from the Egyptian lakes, [[ “Hippiatrica” 130] Refs]; as an ἄρτυμα, [[ 4th c.BC: Antiphanes Comicus 142.2 ] Refs 4th c.BC+]; mixed with oil as a soap, [[ 4th c.AD: Alciphro Epistolographus 3.61, 4th c.AD: Libanius Sophista “Declamationes” 26.19 ] Refs 4th c.AD+]. (Cf. Egypt. ntirj 'natron'.)