偶氮砷Ⅰ是一种化学物质，分子式是C16H11AsN2Na2O11S2，熔点 ≥300 °C(lit.)。2-(2-Arsonophenylazo)chromotropic acid disodium saltArsenazoNeothorono-(1，8-Dihydroxy-3，6-disulfo-2-naphthylazo)benzenearsonic Acid Sodium Salto-Arsonophenylazo-chromotropic Acid Sodium Salt熔点 ≥300 °C(lit.)