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403040 Sigma-Aldrich

Tannic acid

ACS reagent

Synonym: Gallotannin, Tannin

  • CAS Number 1401-55-4

  • Empirical Formula (Hill Notation) C76H52O46

  • Molecular Weight 1701.20

  •  Beilstein/REAXYS Number 8186396

  •  EC Number 215-753-2

  •  MDL number MFCD00066397

  •  PubChem Substance ID 24865158

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Properties

Related Categories Acids, Acids & Bases, Chemical Synthesis, Organic Acids, Synthetic Reagents More...
grade   ACS reagent
InChI Key   LRBQNJMCXXYXIU-PPKXGCFTSA-N
autoignition temp.   980 °F
ign. residue   ≤0.5%
loss   ≤12.0% loss on drying, 105°C
mp   218 °C (lit.)
cation traces   Zn: ≤0.005%
  heavy metals: ≤0.003%

Description

General description

Tannic acid (TA) is a natural, non-toxic organic acid with corrosion inhibitive property for metals and alloys. A chemiluminescence (CL) system of KIO4 (potassium periodate)–H2O2 (hydrogen peroxide)–Tween40 has been employed in the detection of tannic acid in industrial wastewater. Tannic acid hydrolyzes to form mainly glucose and gallic acid. Its astringent property is due to the presence of polyphenolic groups.

Application

Tannic acid may be used in the following processes:
• Synthesis of ferric tannate complexes by reacting with metallic iron.
• As a protein deproteinizing agent in genomic and plasmid DNAs preparation.
• As a reductant in the synthesis of metal nano particles.

Packaging

50, 100, 500 g in glass bottle

Safety & Documentation

Safety Information

RIDADR 
NONH for all modes of transport
WGK Germany 
2
RTECS 
WW5075000
Flash Point(F) 
390.2 °F
Flash Point(C) 
199 °C

Documents

Certificate of Analysis

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Certificate of Origin

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Protocols & Articles

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Peer-Reviewed Papers
15

References

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