Tannic acid A.R. – 99%

Description

TANNIC ACID A.R.
C76H52O46 = 1701.22
Assay 99% min
Loss on drying at 105 C 9% max
Sulphated ash 0.1% max
Heavy metals (as Pb) 0.003% max
Arsenic (As) 0.0003% max
Dextrines, gum, salt sugars Passes test
Resinous substances Passes test
T71401 100 gm.

Uses: As reagent in analytical chemistry.
Manufacturing gallic acid and pyrogallol. In
photography.

Additional information