USD $1.00-10.00 / Kilogram
USD $10.00-16.00 / Kilogram
USD $10.00-16.00 / Kilogram
USD $15.00-50.00 / Kilogram
USD $15.00-50.00 / Kilogram
USD $70.00-90.00 / Kilogram
USD $1.00-10.00 / Kilogram
USD $100.00-150.00 / Kilogram
USD $70.00-90.00 / Kilogram
high quality 1401-55-4
tannic acid
synonym: tannin, gallotannic acid
molecular formula and weight: c76h52o46 = 701.18
cas registry number: 1401-55-4
grades: tech grade,
food grade (wine),
pharmaceutical grade (bp standard)
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
2. electronicsl grade
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
3. pharmaceutical grade
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
4. food grade
main specifications:
appearance: ivory, no odour
heavy metal, %: ≤ 0.002
loss on drying, %: ≤ 9.0
as, %: ≤ 0.0002
ignited residue, %: ≤ 1.0
content, %: ≥ 86