Properties: Light yellow or light brown amorphous powder,, oxidized and darkening when exposed to air. Soluble in water, ethanol, acetone, and ethyl acetate.

Quality index : The product complies with the national standard GB5308-85.

Uses:

（1）This product is widely used in extraction and acid iron ink manufacturing.

（2） Used to produce leather tanning agent, mordant, rubber coagulant, protein agent, alkaloid precipitant.

（3）Pharmaceutical products, such as raw materials for sulfa synergists (TMP).

（4）Raw material for preparing medicinal acid, pyrogallic acid and sulfa drugs are also raw material for producing gallic acid and pyrogallol. Storage: moisture-proof and light-proof, sealed storage Packing: kraft paper bag, net weight 25 kg