Tannic Acid,China huahong price supplier

5.Packing: 25 KG Bags and other packing method.

 

tannic acid is a basic  ingredient  in the chemical staining of .  The tannic acid or tannin is already present in woods like,  Tannic acid can be applied to woods low in tannin so chemical stains that require tannin content will react. The presence of tannic acid in the bark of is a strong natural defense against , and infestation by certain insects such as .Tannic acid is a common used in the dyeing process for fibers such as , often combined with and/or . The tannin mordant should be done first as  metal mordants combine well with the fiber-tannin complex.

Tannic acid is a polymer of gallic acid molecules and glucose. It the example there are 3 gallic acid molecules, but normally there are about 8. Because there are different molecular structures for tannic acid it would have been better to speak about tannic acids (in plural). Tannic acid will hydrolyze into glucose and gallic or ellagic acid units. Tannic acid is odourless but has a very astringent taste. Pure tannic  acid is a light yellowish and  amorphous powder.

 

PACKING:
                25KG/bag for industrial grade
                packed in Polywoven Bags