Tannic acid 　

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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.　

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YCyaoye

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