Tannic acid
1401-55-4
ycgc_int01atyccreatedoccom 8602788070816
Tannic acid 　
EINECS:215-753-2　
Molecular Formula:C76H52O46　
CAS Registry Number:1401-55-4　
Molecular Weight:1701.22　
Density:2.12 g/cm3　
Water solubility:250 g/L (20℃)　
Melting Point:218℃Flash Point:198℃Storage Temperature:Store in a cool,dry,well-ventilated area away from incompatible substances. Keep containers tightly closed. Store protected from light.　
Refractive index:1.927　
Solubility:250 g/L (20 °C) in water　
Appearance:light yellow to tan solid with a faint odor　
Stability:Stable. Incompatible with metallic salts,strong oxidizing agents,iron and other heavy metals.　
Usage:　
Mordant in dyeing,manufacture ink,sizing paper & silk,printing fabrics,tanning,as coagulant in rubber mfr,with gelatin & albumin for manufacture of imitation horn & tortoise shell,clarifying beer or wine,in photography,manufacture gallic acid & pyrogallol,as reagent in analytical chemistry.