Definitions of K2Cr2O7
Chromic acid ( H2Cr2O7), dipotassium salt. A compound having bright orange- red crystals and used in dyeing, staining, tanning leather, as bleach, oxidizer, depolarizer for dry cells, etc. Medically it has been used externally as an astringent, antiseptic, and caustic. When taken internally, it is a corrosive poison.