Other name: tannin, chinese gall tannic acid.
e in chloroform and ether.
Technical data:
Purity % ¡ý81-92
Loss on drying % ¡ü9
Residue on ignition % ¡ü0.2
Arsenic ppm ¡ü3
Heavy metal ppm ¡ü20
Tree gum or dextrin test up to standard
Resin test up to standard
Grade: tech grade; dyestuff grade; medical grade and food grade.
Storage: kept in airtight container.
25kg/drum
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