Product name: Dye tannic acid
Molecular formula: C₇₆H₅₂O₄₆
Molecular weight: 1701.18
Structural formula:

Character: This product is light yellow to light brown powder, with special smell and astringent taste. Soluble in 1 part water or ethanol, soluble in acetone, insoluble in chloroform or ether.
Quality index: the product conforms to national standard GB5308-85.
To use: As a fixing agent, mordant, fibre deodorant and synthetic dye in textile printing and dyeing.
Storage: keep away from moisture and light and store sealed
Packing: plastic inner and paper drums of 25 kg net per barrel