Factory price Tannic acid for hot sale/ cas1401-55-4 CAS NO.1401-55-4

factory price tannic acid for hot sale/ cas1401-55-4

1.basic informaton.

tannic acid

synonym: tannin, gallotannic acid
molecular formula and weight: c76h52o46 = 701.18
cas registry number: 1401-55-4

description: light yellowish to brownish powder, soluble in 1 share of water or ethanol; soluble in acetone; almost insoluble in chloroform or diethyl ether.

1. industrial grade
item first-grade product
loss on drying, %≤ : 9.0
water insoluble, %≤ : 0.3
solution color≤ : 2.0
content(dry weight), ≥ : 81.0

application: widely used in extract of ge, manufacture of "lro ink", anti-corrosion of metal, treatment of slurry in petroleum well, raw materials of pharmaceutical industry.

packaging: in plastic woven bags of 25kg net each.

2. electronicsl grade
characteristic: light yellowish to light brownish powder, soluble in 1 share of water or ethanol, soluble in acetone, insoluble in chloroform or ethyl ether

content of tannic acid (dry base), %: ≥ 99.5
chloride, ppm: ≤ 4.4
pb, ppm: ≤ 2.0
fe, ppm: ≤ 2.0
sulfate, ppm: ≤ 3.0
moisture, % : ≤ 10.0
use: additive materials for fine chemistry and electronics field.
storage: airproof and protect from light
packing: net weight 25kg per drum

3. pharmaceutical grade
characteristic: light yellowish to light brownish powder, soluble in 1 share of water or ethanol, soluble in acetone, insoluble in chloroform or ethyl ether.

content of tannic acid: ≥ 86.0%
loss on drying: ≤ 9.0%
water insoluble substance: ≤ 0.60%
color: ≤ 1.0
ignited residue: ≤ 0.20%
gallic acid: ≤ 7.0

application: tannic acid for medicine has the antiseptic, enzyme-eliminating and convergent effects. applied as antibiotics to treating tinea, eliminating toxic substances and stopping diarrhea etc.
packaging: 25kgs/drum.

4. food grade
characteristic: light yellowish to light brownish powder, soluble in 1 share of water or ethanol, soluble in acetone, insoluble in chloroform or ethyl ether.

main specifications:
appearance: ivory, no odour
heavy metal, %: ≤ 0.002
loss on drying, %: ≤ 9.0
as, %: ≤ 0.0002
ignited residue, %: ≤ 1.0
content, %: ≥ 86

application: food and feed additive.
packaging: 25kgs/drum