tannic acid

specs:bp/ap,gb5308-85,fcc (1981); fcc-iv

payment method: t/t
tannic acid for industrial use

production capacity: 1200 t/year
other name: tannin; chinese gall tannic acid.
mol. form and mol. wt.： c76h52o46 1701.18
description: from light yellow to light brown powder, the color will be deeping when discovered in the air; no bad smell; acerb taste; soluble in water, alcohol, acetone and ethyl acetate.
specification: comply strictly with china national standard of gb5308-85.
technical data:
purity % ≥ 81
loss on drying % ≤9
insoluble in water % ≤0.6
total color ≤2.0
usage: main material of gallic acid, , sulfanilamide medicine; extract gallic acid and pyrogallol in chemical industry. mud treater in petroleum drilling; furthermore, it can be used in the production of tan-reagent of leather, polygenetic dye, rubber concretion, albumen reagent, alkaloid precipitator, mill run inhibitor,wine-clarifier, the germanium extraction, ink confect and so on
storage: keep in airtight containers.
packing: weave bag with plastic bag inside; n.w. 25kg/bag.

guangzhou topwork chemical co.,ltd. also has the capability in producing chinese gallnut raw materials, which are widely used in medical, chemical, food, printing & dyeing, astronavigation and national defense and micro-electronics areas, also the final goods usually exported to the us, japan, eu and the southeast asia etc.
our strong products are:tannic acid(pharmaceutical/tech/dyes/food grade),gallic acid(3,4,5-trihydroxybenzoic acid),pyrogallic acid(1,2,3-benzenetriol) and so on.

1401-55-4