释义 |
in·di·go·disulfonic acid \| ̷ ̷ ̷ ̷(ˌ) ̷ ̷+...-\ noun Etymology: indigodisulfonic International Scientific Vocabulary indigo + disulfonic : a water-soluble disulfonic acid C16H8N2O2(SO3H)2 obtained by treating indigo with concentrated sulfuric acid — called also indigo extract, 5,5′-indigotindisulfonic acid |